[DO-973] harfbuzz package (!10)

Co-authored-by: aleksandr.vodyanov <aleksandr.vodyanov@avroid.tech>
Reviewed-on: https://git.avroid.tech/Conan/conan_build/pulls/10

recipes/m4/all/conandata.yml

@@ -0,0 +1,23 @@
+sources:
+  "1.4.19":
+    url: "https://nexus.avroid.tech/repository/all-raw-proxy-ftp_gnu_org/gnu/m4/m4-1.4.19.tar.xz"
+    sha256: "63aede5c6d33b6d9b13511cd0be2cac046f2e70fd0a07aa9573a04a82783af96"
+  "1.4.18":
+    url: "https://nexus.avroid.tech/repository/all-raw-proxy-ftp_gnu_org/gnu/m4/m4-1.4.18.tar.xz"
+    sha256: "f2c1e86ca0a404ff281631bdc8377638992744b175afb806e25871a24a934e07"
+patches:
+  "1.4.19":
+    - patch_file: "patches/1.4.19-0001-open-files-in-binary-mode.patch"
+    - patch_file: "patches/1.4.19-0002-ar-lib.patch"
+    - patch_file: "patches/1.4.19-0003-msvc-debug-assertion.patch"
+    - patch_file: "patches/1.4.19-0004-disable-hardening-in-source.patch"
+  "1.4.18":
+    - patch_file: "patches/1.4.18-0001-fflush-adjust-to-glibc-2.28-libio.h-removal.patch"
+    - patch_file: "patches/1.4.18-0002-fflush-be-more-paranoid-about-libio.h-change.patch"
+    - patch_file: "patches/1.4.18-0004-fix-checks.patch"
+    - patch_file: "patches/1.4.18-0005-vasnprintf-Fix-for-MSVC-14.patch"
+    - patch_file: "patches/1.4.18-0006-manywarnings-update-for-gcc-7.patch"
+    - patch_file: "patches/1.4.18-0007-vasnprintf-port-to-macos-10.13.patch"
+    - patch_file: "patches/1.4.18-0008-open-files-in-binary-mode.patch"
+    - patch_file: "patches/1.4.18-0009-disable-hardening-in-source.patch"
+    - patch_file: "patches/1.4.18-0010-c-stack-stop-using-SIGSTKSZ.patch"

recipes/m4/all/conanfile.py

@@ -0,0 +1,135 @@
+from conan import ConanFile
+from conan.tools.build import cross_building
+from conan.tools.env import VirtualBuildEnv
+from conan.tools.files import apply_conandata_patches, copy, export_conandata_patches, get, rmdir, save
+from conan.tools.gnu import Autotools, AutotoolsToolchain
+from conan.tools.layout import basic_layout
+from conan.tools.microsoft import is_msvc, unix_path
+from conan.tools.scm import Version
+import os
+import shutil
+
+required_conan_version = ">=1.55.0"
+
+
+class M4Conan(ConanFile):
+    name = "m4"
+    package_type = "application"
+    description = "GNU M4 is an implementation of the traditional Unix macro processor"
+    topics = ("macro", "preprocessor")
+    homepage = "https://www.gnu.org/software/m4/"
+    url = "https://github.com/conan-io/conan-center-index"
+    license = "GPL-3.0-only"
+    settings = "os", "arch", "compiler", "build_type"
+
+    @property
+    def _settings_build(self):
+        return getattr(self, "settings_build", self.settings)
+
+    def export_sources(self):
+        export_conandata_patches(self)
+
+    def layout(self):
+        basic_layout(self, src_folder="src")
+
+    def package_id(self):
+        del self.info.settings.compiler
+
+    def build_requirements(self):
+        if self._settings_build.os == "Windows":
+            self.win_bash = True
+            if not self.conf.get("tools.microsoft.bash:path", check_type=str):
+                self.tool_requires("msys2/cci.latest")
+
+    def source(self):
+        get(self, **self.conan_data["sources"][self.version], strip_root=True)
+
+    def generate(self):
+        env = VirtualBuildEnv(self)
+        env.generate()
+
+        tc = AutotoolsToolchain(self)
+        if is_msvc(self):
+            tc.extra_cflags.append("-FS")
+            # Avoid a `Assertion Failed Dialog Box` during configure with build_type=Debug
+            # Visual Studio does not support the %n format flag:
+            # https://docs.microsoft.com/en-us/cpp/c-runtime-library/format-specification-syntax-printf-and-wprintf-functions
+            # Because the %n format is inherently insecure, it is disabled by default. If %n is encountered in a format string,
+            # the invalid parameter handler is invoked, as described in Parameter Validation. To enable %n support, see _set_printf_count_output.
+            tc.configure_args.extend([
+                "gl_cv_func_printf_directive_n=no",
+                "gl_cv_func_snprintf_directive_n=no",
+                "gl_cv_func_snprintf_directive_n=no",
+            ])
+            if self.settings.build_type in ("Debug", "RelWithDebInfo"):
+                tc.extra_ldflags.append("-PDB")
+        elif self.settings.compiler == "clang" and Version(self.version) < "1.4.19":
+            tc.extra_cflags.extend([
+                "-rtlib=compiler-rt",
+                "-Wno-unused-command-line-argument",
+            ])
+        if cross_building(self) and is_msvc(self):
+            triplet_arch_windows = {"x86_64": "x86_64", "x86": "i686", "armv8": "aarch64"}
+            
+            host_arch = triplet_arch_windows.get(str(self.settings.arch))
+            build_arch = triplet_arch_windows.get(str(self._settings_build.arch))
+
+            if host_arch and build_arch:
+                host = f"{host_arch}-w64-mingw32"
+                build = f"{build_arch}-w64-mingw32"
+                tc.configure_args.extend([
+                    f"--host={host}",
+                    f"--build={build}",
+                ])
+        if self.settings.os == "Windows":
+            tc.configure_args.append("ac_cv_func__set_invalid_parameter_handler=yes")
+        env = tc.environment()
+        # help2man trick
+        env.prepend_path("PATH", self.source_folder)
+        # handle msvc
+        if is_msvc(self):
+            ar_wrapper = unix_path(self, os.path.join(self.source_folder, "build-aux", "ar-lib"))
+            env.define("CC", "cl -nologo")
+            env.define("CXX", "cl -nologo")
+            env.define("AR", f"{ar_wrapper} lib")
+            env.define("LD", "link")
+            env.define("NM", "dumpbin -symbols")
+            env.define("OBJDUMP", ":")
+            env.define("RANLIB", ":")
+            env.define("STRIP", ":")
+        tc.generate(env)
+
+    def _patch_sources(self):
+        apply_conandata_patches(self)
+        if shutil.which("help2man") == None:
+            # dummy file for configure
+            help2man = os.path.join(self.source_folder, "help2man")
+            save(self, help2man, "#!/usr/bin/env bash\n:")
+            if os.name == "posix":
+                os.chmod(help2man, os.stat(help2man).st_mode | 0o111)
+
+    def build(self):
+        self._patch_sources()
+        autotools = Autotools(self)
+        autotools.configure()
+        autotools.make()
+
+    def package(self):
+        copy(self, "COPYING", src=self.source_folder, dst=os.path.join(self.package_folder, "licenses"))
+        autotools = Autotools(self)
+        autotools.install()
+        rmdir(self, os.path.join(self.package_folder, "share"))
+
+    def package_info(self):
+        self.cpp_info.libdirs = []
+        self.cpp_info.includedirs = []
+
+        # M4 environment variable is used by a lot of scripts as a way to override a hard-coded embedded m4 path
+        bin_ext = ".exe" if self.settings.os == "Windows" else ""
+        m4_bin = os.path.join(self.package_folder, "bin", f"m4{bin_ext}").replace("\\", "/")
+        self.runenv_info.define_path("M4", m4_bin)
+        self.buildenv_info.define_path("M4", m4_bin)
+
+        # TODO: to remove in conan v2
+        self.env_info.PATH.append(os.path.join(self.package_folder, "bin"))
+        self.env_info.M4 = m4_bin

recipes/m4/all/patches/1.4.18-0001-fflush-adjust-to-glibc-2.28-libio.h-removal.patch

@@ -0,0 +1,170 @@
+# this patches is from https://git.busybox.net/buildroot/commit/?id=c48f8a64626c60bd1b46804b7cf1a699ff53cdf3
+# to fix compiler error on certain systems:
+# freadahead.c:92:3: error: #error "Please port gnulib freadahead.c to your platform! Look at the definition of fflush, fread, ungetc on your system, then report this to bug-gnulib."
+
+From 4af4a4a71827c0bc5e0ec67af23edef4f15cee8e Mon Sep 17 00:00:00 2001
+From: Paul Eggert <eggert@cs.ucla.edu>
+Date: Mon, 5 Mar 2018 10:56:29 -0800
+Subject: [PATCH] fflush: adjust to glibc 2.28 libio.h removal
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Problem reported by Daniel P. Berrangé in:
+https://lists.gnu.org/r/bug-gnulib/2018-03/msg00000.html
+* lib/fbufmode.c (fbufmode):
+* lib/fflush.c (clear_ungetc_buffer_preserving_position)
+(disable_seek_optimization, rpl_fflush):
+* lib/fpending.c (__fpending):
+* lib/fpurge.c (fpurge):
+* lib/freadable.c (freadable):
+* lib/freadahead.c (freadahead):
+* lib/freading.c (freading):
+* lib/freadptr.c (freadptr):
+* lib/freadseek.c (freadptrinc):
+* lib/fseeko.c (fseeko):
+* lib/fseterr.c (fseterr):
+* lib/fwritable.c (fwritable):
+* lib/fwriting.c (fwriting):
+Check _IO_EOF_SEEN instead of _IO_ftrylockfile.
+* lib/stdio-impl.h (_IO_IN_BACKUP) [_IO_EOF_SEEN]:
+Define if not already defined.
+
+[yann.morin.1998@free.fr: partially backport from upstream gnulib]
+Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
+
+---
+ lib/fflush.c     |  6 +++---
+ lib/fpending.c   |  2 +-
+ lib/fpurge.c     |  2 +-
+ lib/freadahead.c |  2 +-
+ lib/freading.c   |  2 +-
+ lib/fseeko.c     |  4 ++--
+ lib/stdio-impl.h |  6 ++++++
+ 7 files changed, 15 insertions(+), 9 deletions(-)
+
+diff --git a/lib/fflush.c b/lib/fflush.c
+index ef2a7f1..787790d 100644
+--- a/lib/fflush.c
++++ b/lib/fflush.c
+@@ -33,7 +33,7 @@
+ #undef fflush
+ 
+ 
+-#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
++#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
+ 
+ /* Clear the stream's ungetc buffer, preserving the value of ftello (fp).  */
+ static void
+@@ -72,7 +72,7 @@ clear_ungetc_buffer (FILE *fp)
+ 
+ #endif
+ 
+-#if ! (defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */)
++#if ! (defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */)
+ 
+ # if (defined __sferror || defined __DragonFly__ || defined __ANDROID__) && defined __SNPT
+ /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Android */
+@@ -148,7 +148,7 @@ rpl_fflush (FILE *stream)
+   if (stream == NULL || ! freading (stream))
+     return fflush (stream);
+ 
+-#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
++#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
+ 
+   clear_ungetc_buffer_preserving_position (stream);
+ 
+diff --git a/lib/fpending.c b/lib/fpending.c
+index ce93604..9fe7ffb 100644
+--- a/lib/fpending.c
++++ b/lib/fpending.c
+@@ -32,7 +32,7 @@ __fpending (FILE *fp)
+   /* Most systems provide FILE as a struct and the necessary bitmask in
+      <stdio.h>, because they need it for implementing getc() and putc() as
+      fast macros.  */
+-#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
++#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
+   return fp->_IO_write_ptr - fp->_IO_write_base;
+ #elif defined __sferror || defined __DragonFly__ || defined __ANDROID__
+   /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Android */
+diff --git a/lib/fpurge.c b/lib/fpurge.c
+index 53ee68c..7cba3a3 100644
+--- a/lib/fpurge.c
++++ b/lib/fpurge.c
+@@ -62,7 +62,7 @@ fpurge (FILE *fp)
+   /* Most systems provide FILE as a struct and the necessary bitmask in
+      <stdio.h>, because they need it for implementing getc() and putc() as
+      fast macros.  */
+-# if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
++# if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
+   fp->_IO_read_end = fp->_IO_read_ptr;
+   fp->_IO_write_ptr = fp->_IO_write_base;
+   /* Avoid memory leak when there is an active ungetc buffer.  */
+diff --git a/lib/freadahead.c b/lib/freadahead.c
+index cfc969b..5e43e13 100644
+--- a/lib/freadahead.c
++++ b/lib/freadahead.c
+@@ -25,7 +25,7 @@
+ size_t
+ freadahead (FILE *fp)
+ {
+-#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
++#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
+   if (fp->_IO_write_ptr > fp->_IO_write_base)
+     return 0;
+   return (fp->_IO_read_end - fp->_IO_read_ptr)
+diff --git a/lib/freading.c b/lib/freading.c
+index 05cb0b8..f1da5b9 100644
+--- a/lib/freading.c
++++ b/lib/freading.c
+@@ -31,7 +31,7 @@ freading (FILE *fp)
+   /* Most systems provide FILE as a struct and the necessary bitmask in
+      <stdio.h>, because they need it for implementing getc() and putc() as
+      fast macros.  */
+-# if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
++# if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
+   return ((fp->_flags & _IO_NO_WRITES) != 0
+           || ((fp->_flags & (_IO_NO_READS | _IO_CURRENTLY_PUTTING)) == 0
+               && fp->_IO_read_base != NULL));
+diff --git a/lib/fseeko.c b/lib/fseeko.c
+index 0c01c4f..0601619 100644
+--- a/lib/fseeko.c
++++ b/lib/fseeko.c
+@@ -47,7 +47,7 @@ fseeko (FILE *fp, off_t offset, int whence)
+ #endif
+ 
+   /* These tests are based on fpurge.c.  */
+-#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
++#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
+   if (fp->_IO_read_end == fp->_IO_read_ptr
+       && fp->_IO_write_ptr == fp->_IO_write_base
+       && fp->_IO_save_base == NULL)
+@@ -123,7 +123,7 @@ fseeko (FILE *fp, off_t offset, int whence)
+           return -1;
+         }
+ 
+-#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
++#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
+       fp->_flags &= ~_IO_EOF_SEEN;
+       fp->_offset = pos;
+ #elif defined __sferror || defined __DragonFly__ || defined __ANDROID__
+diff --git a/lib/stdio-impl.h b/lib/stdio-impl.h
+index 766d693..75fe3ad 100644
+--- a/lib/stdio-impl.h
++++ b/lib/stdio-impl.h
+@@ -18,6 +18,12 @@
+    the same implementation of stdio extension API, except that some fields
+    have different naming conventions, or their access requires some casts.  */
+ 
++/* Glibc 2.28 made _IO_IN_BACKUP private.  For now, work around this
++   problem by defining it ourselves.  FIXME: Do not rely on glibc
++   internals.  */
++#if !defined _IO_IN_BACKUP && defined _IO_EOF_SEEN
++# define _IO_IN_BACKUP 0x100
++#endif
+ 
+ /* BSD stdio derived implementations.  */
+ 
+-- 
+2.7.4.windows.1
+

recipes/m4/all/patches/1.4.18-0002-fflush-be-more-paranoid-about-libio.h-change.patch

@@ -0,0 +1,156 @@
+# this patches is from https://git.busybox.net/buildroot/commit/?id=c48f8a64626c60bd1b46804b7cf1a699ff53cdf3
+# to fix compiler error on certain systems:
+# freadahead.c:92:3: error: #error "Please port gnulib freadahead.c to your platform! Look at the definition of fflush, fread, ungetc on your system, then report this to bug-gnulib."
+
+
+From 74d9d6a293d7462dea8f83e7fc5ac792e956a0ad Mon Sep 17 00:00:00 2001
+From: Paul Eggert <eggert@cs.ucla.edu>
+Date: Thu, 8 Mar 2018 16:42:45 -0800
+Subject: [PATCH 2/2] fflush: be more paranoid about libio.h change
+
+Suggested by Eli Zaretskii in:
+https://lists.gnu.org/r/emacs-devel/2018-03/msg00270.html
+* lib/fbufmode.c (fbufmode):
+* lib/fflush.c (clear_ungetc_buffer_preserving_position)
+(disable_seek_optimization, rpl_fflush):
+* lib/fpending.c (__fpending):
+* lib/fpurge.c (fpurge):
+* lib/freadable.c (freadable):
+* lib/freadahead.c (freadahead):
+* lib/freading.c (freading):
+* lib/freadptr.c (freadptr):
+* lib/freadseek.c (freadptrinc):
+* lib/fseeko.c (fseeko):
+* lib/fseterr.c (fseterr):
+* lib/fwritable.c (fwritable):
+* lib/fwriting.c (fwriting):
+Look at _IO_ftrylockfile as well as at _IO_EOF_SEEN.
+---
+ lib/fflush.c     |  9 ++++++---
+ lib/fpending.c   |  3 ++-
+ lib/fpurge.c     |  3 ++-
+ lib/freadahead.c |  3 ++-
+ lib/freading.c   |  3 ++-
+ lib/fseeko.c     |  6 ++++--
+ 6 files changed, 18 insertions(+), 9 deletions(-)
+
+[yann.morin.1998@free.fr: partially backport from upstream gnulib]
+Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
+
+diff --git a/lib/fflush.c b/lib/fflush.c
+index 787790d..d6951a8 100644
+--- a/lib/fflush.c
++++ b/lib/fflush.c
+@@ -33,7 +33,8 @@
+ #undef fflush
+ 
+ 
+-#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
++#if defined _IO_EOF_SEEN || defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1
++/* GNU libc, BeOS, Haiku, Linux libc5 */
+ 
+ /* Clear the stream's ungetc buffer, preserving the value of ftello (fp).  */
+ static void
+@@ -72,7 +73,8 @@ clear_ungetc_buffer (FILE *fp)
+ 
+ #endif
+ 
+-#if ! (defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */)
++#if ! (defined _IO_EOF_SEEN || defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1)
++/* GNU libc, BeOS, Haiku, Linux libc5 */
+ 
+ # if (defined __sferror || defined __DragonFly__ || defined __ANDROID__) && defined __SNPT
+ /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Android */
+@@ -148,7 +150,8 @@ rpl_fflush (FILE *stream)
+   if (stream == NULL || ! freading (stream))
+     return fflush (stream);
+ 
+-#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
++#if defined _IO_EOF_SEEN || defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1
++  /* GNU libc, BeOS, Haiku, Linux libc5 */
+ 
+   clear_ungetc_buffer_preserving_position (stream);
+ 
+diff --git a/lib/fpending.c b/lib/fpending.c
+index 9fe7ffb..9433c1a 100644
+--- a/lib/fpending.c
++++ b/lib/fpending.c
+@@ -32,7 +32,8 @@ __fpending (FILE *fp)
+   /* Most systems provide FILE as a struct and the necessary bitmask in
+      <stdio.h>, because they need it for implementing getc() and putc() as
+      fast macros.  */
+-#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
++#if defined _IO_EOF_SEEN || defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1
++  /* GNU libc, BeOS, Haiku, Linux libc5 */
+   return fp->_IO_write_ptr - fp->_IO_write_base;
+ #elif defined __sferror || defined __DragonFly__ || defined __ANDROID__
+   /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Android */
+diff --git a/lib/fpurge.c b/lib/fpurge.c
+index 7cba3a3..55758d7 100644
+--- a/lib/fpurge.c
++++ b/lib/fpurge.c
+@@ -62,7 +62,8 @@ fpurge (FILE *fp)
+   /* Most systems provide FILE as a struct and the necessary bitmask in
+      <stdio.h>, because they need it for implementing getc() and putc() as
+      fast macros.  */
+-# if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
++# if defined _IO_EOF_SEEN || defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1
++  /* GNU libc, BeOS, Haiku, Linux libc5 */
+   fp->_IO_read_end = fp->_IO_read_ptr;
+   fp->_IO_write_ptr = fp->_IO_write_base;
+   /* Avoid memory leak when there is an active ungetc buffer.  */
+diff --git a/lib/freadahead.c b/lib/freadahead.c
+index 5e43e13..4ccaa09 100644
+--- a/lib/freadahead.c
++++ b/lib/freadahead.c
+@@ -25,7 +25,8 @@
+ size_t
+ freadahead (FILE *fp)
+ {
+-#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
++#if defined _IO_EOF_SEEN || defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1
++  /* GNU libc, BeOS, Haiku, Linux libc5 */
+   if (fp->_IO_write_ptr > fp->_IO_write_base)
+     return 0;
+   return (fp->_IO_read_end - fp->_IO_read_ptr)
+diff --git a/lib/freading.c b/lib/freading.c
+index f1da5b9..7ae5618 100644
+--- a/lib/freading.c
++++ b/lib/freading.c
+@@ -31,7 +31,8 @@ freading (FILE *fp)
+   /* Most systems provide FILE as a struct and the necessary bitmask in
+      <stdio.h>, because they need it for implementing getc() and putc() as
+      fast macros.  */
+-# if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
++# if defined _IO_EOF_SEEN || defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1
++  /* GNU libc, BeOS, Haiku, Linux libc5 */
+   return ((fp->_flags & _IO_NO_WRITES) != 0
+           || ((fp->_flags & (_IO_NO_READS | _IO_CURRENTLY_PUTTING)) == 0
+               && fp->_IO_read_base != NULL));
+diff --git a/lib/fseeko.c b/lib/fseeko.c
+index 0601619..2fc1986 100644
+--- a/lib/fseeko.c
++++ b/lib/fseeko.c
+@@ -47,7 +47,8 @@ fseeko (FILE *fp, off_t offset, int whence)
+ #endif
+ 
+   /* These tests are based on fpurge.c.  */
+-#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
++#if defined _IO_EOF_SEEN || defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1
++  /* GNU libc, BeOS, Haiku, Linux libc5 */
+   if (fp->_IO_read_end == fp->_IO_read_ptr
+       && fp->_IO_write_ptr == fp->_IO_write_base
+       && fp->_IO_save_base == NULL)
+@@ -123,7 +124,8 @@ fseeko (FILE *fp, off_t offset, int whence)
+           return -1;
+         }
+ 
+-#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
++#if defined _IO_EOF_SEEN || defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1
++      /* GNU libc, BeOS, Haiku, Linux libc5 */
+       fp->_flags &= ~_IO_EOF_SEEN;
+       fp->_offset = pos;
+ #elif defined __sferror || defined __DragonFly__ || defined __ANDROID__
+-- 
+2.7.4.windows.1
+

recipes/m4/all/patches/1.4.18-0004-fix-checks.patch

@@ -0,0 +1,35 @@
+--- checks/check-them
++++ checks/check-them
+@@ -58,12 +58,13 @@
+   shift; shift
+ fi
+ 
+ # Find out how the executable prints argv[0]
+ m4name=`"$m4" --help | ${SED} -e 's/Usage: \(.*\) \[OPTION.*/\1/' \
+   -e 's/\\\\/\\\\\\\\/g' -e 1q`
++m4name=`basename $m4name`
+ 
+ # Find out if we should strip \r in the output
+ "$m4" --version | tee $out
+ "$m4" --version | tr -d '\015' > $xout
+ if cmp -s $out $xout; then
+   :
+
+---checks/Makefile
++++ checks/Makefile.in
+@@ -1612,14 +1612,14 @@
+ $(srcdir)/stamp-checks: $(srcdir)/get-them $(top_srcdir)/doc/m4.texi
+ 	rm -f $(DOC_CHECKS)
+ 	cd $(srcdir) && AWK=$(AWK) ./get-them ../doc/m4.texi
+ 	echo stamp >$@
+
+ check-local: $(srcdir)/stamp-checks
+-	PATH=`pwd`/../src"$(PATH_SEPARATOR)"$$PATH; export PATH; \
+-	$(srcdir)/check-them -I $(srcdir)/../examples $(CHECKS)
++	cd $(srcdir)/.. && PATH=src"$(PATH_SEPARATOR)"$$PATH \
++	$(srcdir)/check-them -I examples $(CHECKS)
+
+ installcheck: $(srcdir)/stamp-checks
+ 	PATH='$(bindir)'"$(PATH_SEPARATOR)"$$PATH; export PATH; \
+ 	$(srcdir)/check-them -I $(srcdir)/../examples \
+ 	-m "`echo m4 | sed '$(program_transform_name)'`" $(CHECKS)

recipes/m4/all/patches/1.4.18-0005-vasnprintf-Fix-for-MSVC-14.patch

@@ -0,0 +1,124 @@
+From 0d01189c540f63159448ba6bf4740bb20ff1e1ee Mon Sep 17 00:00:00 2001
+From: Bruno Haible <bruno@clisp.org>
+Date: Fri, 21 Apr 2017 17:24:48 +0200
+Subject: vasnprintf: Fix for MSVC 14.
+
+* lib/vasnprintf.c (USE_MSVC__SNPRINTF): New macro.
+Everywhere, use !HAVE_SNPRINTF_RETVAL_C99 || USE_MSVC__SNPRINTF instead
+of !HAVE_SNPRINTF_RETVAL_C99.
+---
+ lib/vasnprintf.c | 23 +++++++++++++----------
+ 1 file changed, 13 insertions(+), 10 deletions(-)
+
+(limited to 'lib/vasnprintf.c')
+
+diff --git a/lib/vasnprintf.c b/lib/vasnprintf.c
+index 4962e5893..839f79060 100644
+--- a/lib/vasnprintf.c
++++ b/lib/vasnprintf.c
+@@ -156,6 +156,7 @@
+ #   define SNPRINTF snwprintf
+ #  else
+ #   define SNPRINTF _snwprintf
++#   define USE_MSVC__SNPRINTF 1
+ #  endif
+ # else
+    /* Unix.  */
+@@ -181,7 +182,9 @@
+     /* Here we need to call the native snprintf, not rpl_snprintf.  */
+ #   undef snprintf
+ #  else
++    /* MSVC versions < 14 did not have snprintf, only _snprintf.  */
+ #   define SNPRINTF _snprintf
++#   define USE_MSVC__SNPRINTF 1
+ #  endif
+ # else
+    /* Unix.  */
+@@ -208,7 +211,7 @@
+ #undef remainder
+ #define remainder rem
+ 
+-#if (!USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99) && !WIDE_CHAR_VERSION
++#if (!USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || USE_MSVC__SNPRINTF) && !WIDE_CHAR_VERSION
+ # if (HAVE_STRNLEN && !defined _AIX)
+ #  define local_strnlen strnlen
+ # else
+@@ -224,7 +227,7 @@ local_strnlen (const char *string, size_t maxlen)
+ # endif
+ #endif
+ 
+-#if (((!USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99) && WIDE_CHAR_VERSION) || ((!USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || (NEED_PRINTF_DIRECTIVE_LS && !defined IN_LIBINTL)) && !WIDE_CHAR_VERSION && DCHAR_IS_TCHAR)) && HAVE_WCHAR_T
++#if (((!USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || USE_MSVC__SNPRINTF) && WIDE_CHAR_VERSION) || ((!USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || USE_MSVC__SNPRINTF || (NEED_PRINTF_DIRECTIVE_LS && !defined IN_LIBINTL)) && !WIDE_CHAR_VERSION && DCHAR_IS_TCHAR)) && HAVE_WCHAR_T
+ # if HAVE_WCSLEN
+ #  define local_wcslen wcslen
+ # else
+@@ -247,7 +250,7 @@ local_wcslen (const wchar_t *s)
+ # endif
+ #endif
+ 
+-#if (!USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99) && HAVE_WCHAR_T && WIDE_CHAR_VERSION
++#if (!USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || USE_MSVC__SNPRINTF) && HAVE_WCHAR_T && WIDE_CHAR_VERSION
+ # if HAVE_WCSNLEN
+ #  define local_wcsnlen wcsnlen
+ # else
+@@ -1517,7 +1520,7 @@ is_borderline (const char *digits, size_t precision)
+ 
+ #endif
+ 
+-#if !USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99
++#if !USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || USE_MSVC__SNPRINTF
+ 
+ /* Use a different function name, to make it possible that the 'wchar_t'
+    parametrization and the 'char' parametrization get compiled in the same
+@@ -2392,7 +2395,7 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
+                   }
+               }
+ #endif
+-#if (!USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || (NEED_PRINTF_DIRECTIVE_LS && !defined IN_LIBINTL)) && HAVE_WCHAR_T
++#if (!USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || USE_MSVC__SNPRINTF || (NEED_PRINTF_DIRECTIVE_LS && !defined IN_LIBINTL)) && HAVE_WCHAR_T
+             else if (dp->conversion == 's'
+ # if WIDE_CHAR_VERSION
+                      && a.arg[dp->arg_index].type != TYPE_WIDE_STRING
+@@ -4591,10 +4594,10 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
+ #if !DCHAR_IS_TCHAR || ENABLE_UNISTDIO || NEED_PRINTF_FLAG_LEFTADJUST || NEED_PRINTF_FLAG_ZERO || NEED_PRINTF_UNBOUNDED_PRECISION
+                 int has_width;
+ #endif
+-#if !USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || !DCHAR_IS_TCHAR || ENABLE_UNISTDIO || NEED_PRINTF_FLAG_LEFTADJUST || NEED_PRINTF_FLAG_ZERO || NEED_PRINTF_UNBOUNDED_PRECISION
++#if !USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || USE_MSVC__SNPRINTF || !DCHAR_IS_TCHAR || ENABLE_UNISTDIO || NEED_PRINTF_FLAG_LEFTADJUST || NEED_PRINTF_FLAG_ZERO || NEED_PRINTF_UNBOUNDED_PRECISION
+                 size_t width;
+ #endif
+-#if !USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || NEED_PRINTF_UNBOUNDED_PRECISION
++#if !USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || USE_MSVC__SNPRINTF || NEED_PRINTF_UNBOUNDED_PRECISION
+                 int has_precision;
+                 size_t precision;
+ #endif
+@@ -4623,7 +4626,7 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
+ #if !DCHAR_IS_TCHAR || ENABLE_UNISTDIO || NEED_PRINTF_FLAG_LEFTADJUST || NEED_PRINTF_FLAG_ZERO || NEED_PRINTF_UNBOUNDED_PRECISION
+                 has_width = 0;
+ #endif
+-#if !USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || !DCHAR_IS_TCHAR || ENABLE_UNISTDIO || NEED_PRINTF_FLAG_LEFTADJUST || NEED_PRINTF_FLAG_ZERO || NEED_PRINTF_UNBOUNDED_PRECISION
++#if !USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || USE_MSVC__SNPRINTF || !DCHAR_IS_TCHAR || ENABLE_UNISTDIO || NEED_PRINTF_FLAG_LEFTADJUST || NEED_PRINTF_FLAG_ZERO || NEED_PRINTF_UNBOUNDED_PRECISION
+                 width = 0;
+                 if (dp->width_start != dp->width_end)
+                   {
+@@ -4657,7 +4660,7 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
+                   }
+ #endif
+ 
+-#if !USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || NEED_PRINTF_UNBOUNDED_PRECISION
++#if !USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || USE_MSVC__SNPRINTF || NEED_PRINTF_UNBOUNDED_PRECISION
+                 has_precision = 0;
+                 precision = 6;
+                 if (dp->precision_start != dp->precision_end)
+@@ -5127,7 +5130,7 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
+                             /* Look at the snprintf() return value.  */
+                             if (retcount < 0)
+                               {
+-# if !HAVE_SNPRINTF_RETVAL_C99
++# if !HAVE_SNPRINTF_RETVAL_C99 || USE_MSVC__SNPRINTF
+                                 /* HP-UX 10.20 snprintf() is doubly deficient:
+                                    It doesn't understand the '%n' directive,
+                                    *and* it returns -1 (rather than the length
+-- 
+cgit v1.2.1
+

recipes/m4/all/patches/1.4.18-0006-manywarnings-update-for-gcc-7.patch

@@ -0,0 +1,50 @@
+From 5e22aee79f9d02ac37f40f1d18f5696114c3c3c9 Mon Sep 17 00:00:00 2001
+From: Paul Eggert <eggert@cs.ucla.edu>
+Date: Tue, 16 May 2017 09:23:52 -0700
+Subject: manywarnings: update for GCC 7
+
+* build-aux/gcc-warning.spec:
+* m4/manywarnings.m4 (gl_MANYWARN_ALL_GCC):
+Add GCC 7 warnings, notably -Wimplicit-fallthrough=5, which
+requires a non-comment fallthrough attribute.  This is a bit
+cleaner than the comment versions.
+* lib/strftime.c, lib/dfa.c, lib/fnmatch.c, lib/mbrtowc.c:
+* lib/vasnprintf.c, tests/macros.h (FALLTHROUGH): New macro.
+Use it whenever one switch case falls through into the next.
+---
+ lib/vasnprintf.c | 10 +++++++++-
+ 1 file changed, 9 insertions(+), 1 deletion(-)
+
+(limited to 'lib/vasnprintf.c')
+
+diff --git a/lib/vasnprintf.c b/lib/vasnprintf.c
+index 839f79060..9c2af0e45 100644
+--- a/lib/vasnprintf.c
++++ b/lib/vasnprintf.c
+@@ -118,6 +118,14 @@
+ # include "fpucw.h"
+ #endif
+ 
++#ifndef FALLTHROUGH
++# if __GNUC__ < 7
++#  define FALLTHROUGH ((void) 0)
++# else
++#  define FALLTHROUGH __attribute__ ((__fallthrough__))
++# endif
++#endif
++
+ /* Default parameters.  */
+ #ifndef VASNPRINTF
+ # if WIDE_CHAR_VERSION
+@@ -4837,7 +4845,7 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
+                     *fbp++ = 'l';
+ # endif
+ #endif
+-                    /*FALLTHROUGH*/
++                    FALLTHROUGH;
+                   case TYPE_LONGINT:
+                   case TYPE_ULONGINT:
+ #if HAVE_WINT_T
+-- 
+cgit v1.2.1
+

recipes/m4/all/patches/1.4.18-0007-vasnprintf-port-to-macos-10.13.patch

@@ -0,0 +1,47 @@
+From c41f233c4c38e84023a16339782ee306f03e7f59 Mon Sep 17 00:00:00 2001
+From: Paul Eggert <eggert@cs.ucla.edu>
+Date: Fri, 7 Jul 2017 14:10:20 -0700
+Subject: vasnprintf: port to macOS 10.13
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Problem reported by comex in:
+http://lists.gnu.org/archive/html/bug-gnulib/2017-07/msg00056.html
+* lib/vasnprintf.c (VASNPRINTF): Don’t use %n on macOS.
+---
+ lib/vasnprintf.c | 9 ++++++++-
+ 1 file changed, 8 insertions(+), 1 deletion(-)
+
+(limited to 'lib/vasnprintf.c')
+
+diff --git a/lib/vasnprintf.c b/lib/vasnprintf.c
+index 9c2af0e45..fecaf27a1 100644
+--- a/lib/vasnprintf.c
++++ b/lib/vasnprintf.c
+@@ -4869,7 +4869,11 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
+ #endif
+                   *fbp = dp->conversion;
+ #if USE_SNPRINTF
+-# if !(((__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)) && !defined __UCLIBC__) || ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__))
++# if ! (((__GLIBC__ > 2                                                 \
++          || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3))                  \
++         && !defined __UCLIBC__)                                        \
++        || (defined __APPLE__ && defined __MACH__)                      \
++        || ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__))
+                 fbp[1] = '%';
+                 fbp[2] = 'n';
+                 fbp[3] = '\0';
+@@ -4883,6 +4887,9 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
+                    in format strings in writable memory may crash the program
+                    (if compiled with _FORTIFY_SOURCE=2), so we should avoid it
+                    in this situation.  */
++                /* macOS 10.13 High Sierra behaves like glibc with
++                   _FORTIFY_SOURCE=2, and older macOS releases
++                   presumably do not need %n.  */
+                 /* On native Windows systems (such as mingw), we can avoid using
+                    %n because:
+                      - Although the gl_SNPRINTF_TRUNCATION_C99 test fails,
+-- 
+cgit v1.2.1
+

recipes/m4/all/patches/1.4.18-0008-open-files-in-binary-mode.patch

@@ -0,0 +1,15 @@
+This will open all files in binary mode.
+files may contain binary data.
+This fixes e.g. autoconf, of whose frozen file, contains all characters from 0x00 to 0xff.  
+
+--- src/path.c
++++ src/path.c
+@@ -110,7 +110,7 @@
+ static FILE *
+ m4_fopen (const char *file)
+ {
+-  FILE *fp = fopen (file, "r");
++  FILE *fp = fopen (file, "rb");
+   if (fp)
+     {
+       struct stat st;

recipes/m4/all/patches/1.4.18-0009-disable-hardening-in-source.patch

@@ -0,0 +1,16 @@
+This requires linking to ssp on some systems, which might not always present.
+If this is really desired:
+* add `-lssp` to LDFLAGS, and
+* add `-D_FORTIFY_SOURCE=2` to CPPFLAGS/CFLAGS
+
+--- lib/config.hin
++++ lib/config.hin
+@@ -96,7 +96,7 @@
+ /* Enable compile-time and run-time bounds-checking, and some warnings,
+       without upsetting newer glibc. */
+    #if defined __OPTIMIZE__ && __OPTIMIZE__
+-   # define _FORTIFY_SOURCE 2
++   //# define _FORTIFY_SOURCE 2
+    #endif
+   
+ 

recipes/m4/all/patches/1.4.18-0010-c-stack-stop-using-SIGSTKSZ.patch

@@ -0,0 +1,106 @@
+c-stack: stop using SIGSTKSZ
+
+It’s been proposed to stop making SIGSTKSZ an integer constant:
+https://sourceware.org/pipermail/libc-alpha/2020-September/118028.html
+Also, using SIGSTKSZ in #if did not conform to current POSIX.
+Also, avoiding SIGSTKSZ makes the code simpler and easier to grok.
+* lib/c-stack.c (SIGSTKSZ): Remove.
+(alternate_signal_stack): Now a 64 KiB array, for simplicity.
+All uses changed.
+
+[Retrieved (and backported) from:
+https://git.savannah.gnu.org/cgit/gnulib.git/patch/?id=f9e2b20a12a230efa30f1d479563ae07d276a94b]
+Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+
+diff -Nura lib/c-stack.c lib/c-stack.c
+--- lib/c-stack.c	2021-04-11 19:12:14.086494029 +0200
++++ lib/c-stack.c	2021-04-11 19:48:46.316862760 +0200
+@@ -50,15 +50,16 @@
+ #if ! HAVE_STACK_T && ! defined stack_t
+ typedef struct sigaltstack stack_t;
+ #endif
+-#ifndef SIGSTKSZ
+-# define SIGSTKSZ 16384
+-#elif HAVE_LIBSIGSEGV && SIGSTKSZ < 16384
+-/* libsigsegv 2.6 through 2.8 have a bug where some architectures use
+-   more than the Linux default of an 8k alternate stack when deciding
+-   if a fault was caused by stack overflow.  */
+-# undef SIGSTKSZ
+-# define SIGSTKSZ 16384
+-#endif
++
++/* Storage for the alternate signal stack.
++   64 KiB is not too large for Gnulib-using apps, and is large enough
++   for all known platforms.  Smaller sizes may run into trouble.
++   For example, libsigsegv 2.6 through 2.8 have a bug where some
++   architectures use more than the Linux default of an 8 KiB alternate
++   stack when deciding if a fault was caused by stack overflow.  */
++static max_align_t alternate_signal_stack[(64 * 1024
++                                           + sizeof (max_align_t) - 1)
++                                          / sizeof (max_align_t)];
+ 
+ #include <stdlib.h>
+ #include <string.h>
+@@ -128,19 +129,6 @@
+ #if (HAVE_SIGALTSTACK && HAVE_DECL_SIGALTSTACK \
+      && HAVE_STACK_OVERFLOW_HANDLING) || HAVE_LIBSIGSEGV
+ 
+-/* Storage for the alternate signal stack.  */
+-static union
+-{
+-  char buffer[SIGSTKSZ];
+-
+-  /* These other members are for proper alignment.  There's no
+-     standard way to guarantee stack alignment, but this seems enough
+-     in practice.  */
+-  long double ld;
+-  long l;
+-  void *p;
+-} alternate_signal_stack;
+-
+ static void
+ null_action (int signo __attribute__ ((unused)))
+ {
+@@ -205,8 +193,8 @@
+ 
+   /* Always install the overflow handler.  */
+   if (stackoverflow_install_handler (overflow_handler,
+-                                     alternate_signal_stack.buffer,
+-                                     sizeof alternate_signal_stack.buffer))
++                                     alternate_signal_stack,
++                                     sizeof alternate_signal_stack))
+     {
+       errno = ENOTSUP;
+       return -1;
+@@ -279,14 +267,14 @@
+   stack_t st;
+   struct sigaction act;
+   st.ss_flags = 0;
++  st.ss_sp = alternate_signal_stack;
++  st.ss_size = sizeof alternate_signal_stack;
+ # if SIGALTSTACK_SS_REVERSED
+   /* Irix mistakenly treats ss_sp as the upper bound, rather than
+      lower bound, of the alternate stack.  */
+-  st.ss_sp = alternate_signal_stack.buffer + SIGSTKSZ - sizeof (void *);
+-  st.ss_size = sizeof alternate_signal_stack.buffer - sizeof (void *);
+-# else
+-  st.ss_sp = alternate_signal_stack.buffer;
+-  st.ss_size = sizeof alternate_signal_stack.buffer;
++  st.ss_size -= sizeof (void *);
++  char *ss_sp = st.ss_sp;
++  st.ss_sp = ss_sp + st.ss_size;
+ # endif
+   r = sigaltstack (&st, NULL);
+   if (r != 0)
+diff -Nura lib/c-stack.h lib/c-stack.h
+--- lib/c-stack.h	2021-04-11 19:12:14.098494042 +0200
++++ lib/c-stack.h	2021-04-11 19:17:42.138848378 +0200
+@@ -34,7 +34,7 @@
+    A null ACTION acts like an action that does nothing.
+ 
+    ACTION must be async-signal-safe.  ACTION together with its callees
+-   must not require more than SIGSTKSZ bytes of stack space.  Also,
++   must not require more than 64 KiB bytes of stack space.  Also,
+    ACTION should not call longjmp, because this implementation does
+    not guarantee that it is safe to return to the original stack.
+ 

recipes/m4/all/patches/1.4.19-0001-open-files-in-binary-mode.patch

@@ -0,0 +1,15 @@
+This will open all files in binary mode.
+files may contain binary data.
+This fixes e.g. autoconf, of whose frozen file, contains all characters from 0x00 to 0xff.  
+
+--- src/path.c
++++ src/path.c
+@@ -110,7 +110,7 @@
+ static FILE *
+ m4_fopen (const char *file)
+ {
+-  FILE *fp = fopen (file, "re");
++  FILE *fp = fopen (file, "reb");
+   if (fp)
+     {
+       struct stat st;

recipes/m4/all/patches/1.4.19-0002-ar-lib.patch

@@ -0,0 +1,276 @@
+ar-lib is needed for building m4 with Visual Studio.
+Re-use the one from m4/1.4.18.
+We can't use automake here to avoid a build cycle (m4 -> automake -> autoconf -> m4)
+--- /dev/null
++++ build-aux/ar-lib
+@@ -0,0 +1,270 @@
++#! /bin/sh
++# Wrapper for Microsoft lib.exe
++
++me=ar-lib
++scriptversion=2012-03-01.08; # UTC
++
++# Copyright (C) 2010-2014 Free Software Foundation, Inc.
++# Written by Peter Rosin <peda@lysator.liu.se>.
++#
++# This program is free software; you can redistribute it and/or modify
++# it under the terms of the GNU General Public License as published by
++# the Free Software Foundation; either version 2, or (at your option)
++# any later version.
++#
++# This program is distributed in the hope that it will be useful,
++# but WITHOUT ANY WARRANTY; without even the implied warranty of
++# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++# GNU General Public License for more details.
++#
++# You should have received a copy of the GNU General Public License
++# along with this program.  If not, see <http://www.gnu.org/licenses/>.
++
++# As a special exception to the GNU General Public License, if you
++# distribute this file as part of a program that contains a
++# configuration script generated by Autoconf, you may include it under
++# the same distribution terms that you use for the rest of that program.
++
++# This file is maintained in Automake, please report
++# bugs to <bug-automake@gnu.org> or send patches to
++# <automake-patches@gnu.org>.
++
++
++# func_error message
++func_error ()
++{
++  echo "$me: $1" 1>&2
++  exit 1
++}
++
++file_conv=
++
++# func_file_conv build_file
++# Convert a $build file to $host form and store it in $file
++# Currently only supports Windows hosts.
++func_file_conv ()
++{
++  file=$1
++  case $file in
++    / | /[!/]*) # absolute file, and not a UNC file
++      if test -z "$file_conv"; then
++	# lazily determine how to convert abs files
++	case `uname -s` in
++	  MINGW*)
++	    file_conv=mingw
++	    ;;
++	  CYGWIN*)
++	    file_conv=cygwin
++	    ;;
++	  *)
++	    file_conv=wine
++	    ;;
++	esac
++      fi
++      case $file_conv in
++	mingw)
++	  file=`cmd //C echo "$file " | sed -e 's/"\(.*\) " *$/\1/'`
++	  ;;
++	cygwin)
++	  file=`cygpath -m "$file" || echo "$file"`
++	  ;;
++	wine)
++	  file=`winepath -w "$file" || echo "$file"`
++	  ;;
++      esac
++      ;;
++  esac
++}
++
++# func_at_file at_file operation archive
++# Iterate over all members in AT_FILE performing OPERATION on ARCHIVE
++# for each of them.
++# When interpreting the content of the @FILE, do NOT use func_file_conv,
++# since the user would need to supply preconverted file names to
++# binutils ar, at least for MinGW.
++func_at_file ()
++{
++  operation=$2
++  archive=$3
++  at_file_contents=`cat "$1"`
++  eval set x "$at_file_contents"
++  shift
++
++  for member
++  do
++    $AR -NOLOGO $operation:"$member" "$archive" || exit $?
++  done
++}
++
++case $1 in
++  '')
++     func_error "no command.  Try '$0 --help' for more information."
++     ;;
++  -h | --h*)
++    cat <<EOF
++Usage: $me [--help] [--version] PROGRAM ACTION ARCHIVE [MEMBER...]
++
++Members may be specified in a file named with @FILE.
++EOF
++    exit $?
++    ;;
++  -v | --v*)
++    echo "$me, version $scriptversion"
++    exit $?
++    ;;
++esac
++
++if test $# -lt 3; then
++  func_error "you must specify a program, an action and an archive"
++fi
++
++AR=$1
++shift
++while :
++do
++  if test $# -lt 2; then
++    func_error "you must specify a program, an action and an archive"
++  fi
++  case $1 in
++    -lib | -LIB \
++    | -ltcg | -LTCG \
++    | -machine* | -MACHINE* \
++    | -subsystem* | -SUBSYSTEM* \
++    | -verbose | -VERBOSE \
++    | -wx* | -WX* )
++      AR="$AR $1"
++      shift
++      ;;
++    *)
++      action=$1
++      shift
++      break
++      ;;
++  esac
++done
++orig_archive=$1
++shift
++func_file_conv "$orig_archive"
++archive=$file
++
++# strip leading dash in $action
++action=${action#-}
++
++delete=
++extract=
++list=
++quick=
++replace=
++index=
++create=
++
++while test -n "$action"
++do
++  case $action in
++    d*) delete=yes  ;;
++    x*) extract=yes ;;
++    t*) list=yes    ;;
++    q*) quick=yes   ;;
++    r*) replace=yes ;;
++    s*) index=yes   ;;
++    S*)             ;; # the index is always updated implicitly
++    c*) create=yes  ;;
++    u*)             ;; # TODO: don't ignore the update modifier
++    v*)             ;; # TODO: don't ignore the verbose modifier
++    *)
++      func_error "unknown action specified"
++      ;;
++  esac
++  action=${action#?}
++done
++
++case $delete$extract$list$quick$replace,$index in
++  yes,* | ,yes)
++    ;;
++  yesyes*)
++    func_error "more than one action specified"
++    ;;
++  *)
++    func_error "no action specified"
++    ;;
++esac
++
++if test -n "$delete"; then
++  if test ! -f "$orig_archive"; then
++    func_error "archive not found"
++  fi
++  for member
++  do
++    case $1 in
++      @*)
++        func_at_file "${1#@}" -REMOVE "$archive"
++        ;;
++      *)
++        func_file_conv "$1"
++        $AR -NOLOGO -REMOVE:"$file" "$archive" || exit $?
++        ;;
++    esac
++  done
++
++elif test -n "$extract"; then
++  if test ! -f "$orig_archive"; then
++    func_error "archive not found"
++  fi
++  if test $# -gt 0; then
++    for member
++    do
++      case $1 in
++        @*)
++          func_at_file "${1#@}" -EXTRACT "$archive"
++          ;;
++        *)
++          func_file_conv "$1"
++          $AR -NOLOGO -EXTRACT:"$file" "$archive" || exit $?
++          ;;
++      esac
++    done
++  else
++    $AR -NOLOGO -LIST "$archive" | sed -e 's/\\/\\\\/g' | while read member
++    do
++      $AR -NOLOGO -EXTRACT:"$member" "$archive" || exit $?
++    done
++  fi
++
++elif test -n "$quick$replace"; then
++  if test ! -f "$orig_archive"; then
++    if test -z "$create"; then
++      echo "$me: creating $orig_archive"
++    fi
++    orig_archive=
++  else
++    orig_archive=$archive
++  fi
++
++  for member
++  do
++    case $1 in
++    @*)
++      func_file_conv "${1#@}"
++      set x "$@" "@$file"
++      ;;
++    *)
++      func_file_conv "$1"
++      set x "$@" "$file"
++      ;;
++    esac
++    shift
++    shift
++  done
++
++  if test -n "$orig_archive"; then
++    $AR -NOLOGO -OUT:"$archive" "$orig_archive" "$@" || exit $?
++  else
++    $AR -NOLOGO -OUT:"$archive" "$@" || exit $?
++  fi
++
++elif test -n "$list"; then
++  if test ! -f "$orig_archive"; then
++    func_error "archive not found"
++  fi
++  $AR -NOLOGO -LIST "$archive" || exit $?
++fi

recipes/m4/all/patches/1.4.19-0003-msvc-debug-assertion.patch

@@ -0,0 +1,31 @@
+diff --git a/src/m4.c b/src/m4.c
+index 2bd57750..ca3ded62 100644
+--- a/src/m4.c
++++ b/src/m4.c
+@@ -36,6 +36,10 @@
+ # include "assert.h"
+ #endif
+ 
++#ifdef _WIN32
++#  include <crtdbg.h>
++#endif
++
+ /* TRANSLATORS: This is a non-ASCII name: The first name is (with
+    Unicode escapes) "Ren\u00e9" or (with HTML entities) "Ren&eacute;".  */
+ #define AUTHORS proper_name_utf8 ("Rene' Seindal", "Ren\xC3\xA9 Seindal")
+@@ -423,6 +427,15 @@ main (int argc, char *const *argv)
+   textdomain (PACKAGE);
+   atexit (close_stdin);
+ 
++#ifdef _WIN32
++  _CrtSetReportMode(_CRT_WARN, _CRTDBG_MODE_FILE);
++  _CrtSetReportFile(_CRT_WARN, _CRTDBG_FILE_STDERR);
++  _CrtSetReportMode(_CRT_ERROR, _CRTDBG_MODE_FILE);
++  _CrtSetReportFile(_CRT_ERROR, _CRTDBG_FILE_STDERR);
++  _CrtSetReportMode(_CRT_ASSERT, _CRTDBG_MODE_FILE);
++  _CrtSetReportFile(_CRT_ASSERT, _CRTDBG_FILE_STDERR);
++#endif
++
+   include_init ();
+   debug_init ();
+ 

recipes/m4/all/patches/1.4.19-0004-disable-hardening-in-source.patch

@@ -0,0 +1,16 @@
+This requires linking to ssp on some systems, which might not always present.
+If this is really desired:
+* add `-lssp` to LDFLAGS, and
+* add `-D_FORTIFY_SOURCE=2` to CPPFLAGS/CFLAGS
+
+--- a/lib/config.hin
++++ b/lib/config.hin
+@@ -198,7 +198,7 @@
+ /* Enable compile-time and run-time bounds-checking, and some warnings,
+       without upsetting newer glibc. */
+    #if defined __OPTIMIZE__ && __OPTIMIZE__
+-   # define _FORTIFY_SOURCE 2
++   //# define _FORTIFY_SOURCE 2
+    #endif
+   
+ 

recipes/m4/all/test_package/conanbuild.sh

@@ -0,0 +1 @@
+. "/home/aleksandr.vodyanov/Documents/Avroid/Conan/conan_recipes.git/recipes/m4/all/test_package/conanbuildenv-release-x86_64.sh"

recipes/m4/all/test_package/conanbuildenv-release-x86_64.sh

@@ -0,0 +1,20 @@
+script_folder="/home/aleksandr.vodyanov/Documents/Avroid/Conan/conan_recipes.git/recipes/m4/all/test_package"
+echo "echo Restoring environment" > "$script_folder/deactivate_conanbuildenv-release-x86_64.sh"
+for v in CXX CC CONAN_V2_MODE M4 PATH
+do
+    is_defined="true"
+    value=$(printenv $v) || is_defined="" || true
+    if [ -n "$value" ] || [ -n "$is_defined" ]
+    then
+        echo export "$v='$value'" >> "$script_folder/deactivate_conanbuildenv-release-x86_64.sh"
+    else
+        echo unset $v >> "$script_folder/deactivate_conanbuildenv-release-x86_64.sh"
+    fi
+done
+
+
+export CXX="x86_64-linux-gnu-g++-12"
+export CC="x86_64-linux-gnu-gcc-12"
+export CONAN_V2_MODE="true"
+export M4="/home/aleksandr.vodyanov/.conan2/p/b/m47abe83bbe08ec/p/bin/m4"
+export PATH="/home/aleksandr.vodyanov/.conan2/p/b/m47abe83bbe08ec/p/bin:$PATH"

recipes/m4/all/test_package/conanfile.py

@@ -0,0 +1,14 @@
+from conan import ConanFile
+
+
+class TestPackageConan(ConanFile):
+    settings = "os", "arch", "compiler", "build_type"
+    generators = "VirtualBuildEnv"
+    test_type = "explicit"
+
+    def build_requirements(self):
+        self.tool_requires(self.tested_reference_str)
+
+    def test(self):
+        extension = ".exe" if self.settings.os == "Windows" else ""
+        self.run(f"m4{extension} --version")

recipes/m4/all/test_package/conanrun.sh

@@ -0,0 +1 @@
+. "/home/aleksandr.vodyanov/Documents/Avroid/Conan/conan_recipes.git/recipes/m4/all/test_package/conanrunenv-release-x86_64.sh"

recipes/m4/all/test_package/conanrunenv-release-x86_64.sh

@@ -0,0 +1,14 @@
+script_folder="/home/aleksandr.vodyanov/Documents/Avroid/Conan/conan_recipes.git/recipes/m4/all/test_package"
+echo "echo Restoring environment" > "$script_folder/deactivate_conanrunenv-release-x86_64.sh"
+for v in 
+do
+    is_defined="true"
+    value=$(printenv $v) || is_defined="" || true
+    if [ -n "$value" ] || [ -n "$is_defined" ]
+    then
+        echo export "$v='$value'" >> "$script_folder/deactivate_conanrunenv-release-x86_64.sh"
+    else
+        echo unset $v >> "$script_folder/deactivate_conanrunenv-release-x86_64.sh"
+    fi
+done
+

recipes/m4/all/test_package/deactivate_conanbuild.sh

@@ -0,0 +1 @@
+. "/home/aleksandr.vodyanov/Documents/Avroid/Conan/conan_recipes.git/recipes/m4/all/test_package/deactivate_conanbuildenv-release-x86_64.sh"

recipes/m4/all/test_package/deactivate_conanbuildenv-release-x86_64.sh

@@ -0,0 +1,6 @@
+echo Restoring environment
+unset CXX
+unset CC
+unset CONAN_V2_MODE
+unset M4
+export PATH='/home/aleksandr.vodyanov/Documents/Avroid/Conan/venv/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/snap/bin:/home/aleksandr.vodyanov/.fzf/bin'

recipes/m4/all/test_package/deactivate_conanrun.sh

@@ -0,0 +1 @@
+. "/home/aleksandr.vodyanov/Documents/Avroid/Conan/conan_recipes.git/recipes/m4/all/test_package/deactivate_conanrunenv-release-x86_64.sh"

recipes/m4/config.yml

@@ -0,0 +1,5 @@
+versions:
+  "1.4.19":
+    folder: all
+  "1.4.18":
+    folder: all