[DO-971] ffmpeg recipe with requirements (!9)

Co-authored-by: aleksandr.vodyanov <aleksandr.vodyanov@avroid.tech>
Reviewed-on: https://git.avroid.tech/Conan/conan_build/pulls/9

recipes/xz_utils/all/test_package/CMakeLists.txt

@@ -0,0 +1,26 @@
+cmake_minimum_required(VERSION 3.1)
+project(test_package LANGUAGES C)
+
+find_package(LibLZMA REQUIRED)
+
+add_executable(${PROJECT_NAME} test_package.c)
+target_link_libraries(${PROJECT_NAME} PRIVATE LibLZMA::LibLZMA)
+
+# Test whether variables from https://cmake.org/cmake/help/latest/module/FindLibLZMA.html
+# are properly defined in conan generators
+set(_custom_vars
+    LIBLZMA_FOUND
+    LIBLZMA_INCLUDE_DIRS
+    LIBLZMA_LIBRARIES
+    LIBLZMA_VERSION_MAJOR
+    LIBLZMA_VERSION_MINOR
+    LIBLZMA_VERSION_PATCH
+    LIBLZMA_VERSION_STRING
+)
+foreach(_custom_var ${_custom_vars})
+    if(DEFINED ${_custom_var})
+        message(STATUS "${_custom_var}: ${${_custom_var}}")
+    else()
+        message(FATAL_ERROR "${_custom_var} not defined")
+    endif()
+endforeach()

recipes/xz_utils/all/test_package/conanfile.py

@@ -0,0 +1,26 @@
+from conan import ConanFile
+from conan.tools.build import can_run
+from conan.tools.cmake import CMake, cmake_layout
+import os
+
+
+class TestPackageConan(ConanFile):
+    settings = "os", "arch", "compiler", "build_type"
+    generators = "CMakeToolchain", "CMakeDeps", "VirtualRunEnv"
+    test_type = "explicit"
+
+    def layout(self):
+        cmake_layout(self)
+
+    def requirements(self):
+        self.requires(self.tested_reference_str)
+
+    def build(self):
+        cmake = CMake(self)
+        cmake.configure()
+        cmake.build()
+
+    def test(self):
+        if can_run(self):
+            bin_path = os.path.join(self.cpp.build.bindirs[0], "test_package")
+            self.run(bin_path, env="conanrun")

recipes/xz_utils/all/test_package/test_package.c

@@ -0,0 +1,8 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <lzma.h>
+
+int main() {
+    printf("LZMA version %s\n", lzma_version_string());
+    return EXIT_SUCCESS;
+}