1 files changed, 43 insertions, 0 deletions
diff --git a/cmake/FindPkgConfigHost.cmake b/cmake/FindPkgConfigHost.cmake
new file mode 100644
index 000000000..a7f9ab0ae
--- /dev/null
+++ b/cmake/FindPkgConfigHost.cmake
@@ -0,0 +1,43 @@
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: BSD-3-Clause
+
+# this is just simply pkg config wrapper to pass executable path to gn
+
+if(CMAKE_CROSSCOMPILING)
+   # find pkg-config, use PKG_CONFIG_HOST if set
+   if((NOT PKG_CONFIG_HOST_EXECUTABLE) AND (NOT "$ENV{PKG_CONFIG_HOST}" STREQUAL ""))
+       set(PKG_CONFIG_HOST_EXECUTABLE "$ENV{PKG_CONFIG_HOST}" CACHE FILEPATH "pkg-config host executable")
+   endif()
+
+   find_program(PKG_CONFIG_HOST_EXECUTABLE NAMES "pkg-config" DOC "pkg-config executable"
+       NO_SYSTEM_ENVIRONMENT_PATH
+       NO_CMAKE_FIND_ROOT_PATH
+   )
+
+   if(PKG_CONFIG_HOST_EXECUTABLE)
+       mark_as_advanced(PKG_CONFIG_HOST_EXECUTABLE)
+       execute_process(COMMAND ${PKG_CONFIG_HOST_EXECUTABLE} --version
+           OUTPUT_VARIABLE PKG_CONFIG_HOST_VERSION_STRING
+           OUTPUT_STRIP_TRAILING_WHITESPACE
+           ERROR_QUIET)
+   endif ()
+
+   include(FindPackageHandleStandardArgs)
+   find_package_handle_standard_args(PkgConfigHost
+       FOUND_VAR PkgConfigHost_FOUND
+       VERSION_VAR PKG_CONFIG_HOST_VERSION_STRING
+       REQUIRED_VARS PKG_CONFIG_HOST_EXECUTABLE
+   )
+else() # if not corss build simply wrap FindPkgConfig
+   find_package(PkgConfig)
+   if(PKG_CONFIG_FOUND)
+       include(FindPackageHandleStandardArgs)
+       set(PKG_CONFIG_HOST_VERSION ${PKG_CONFIG_VERSION})
+       set(PKG_CONFIG_HOST_EXECUTABLE ${PKG_CONFIG_EXECUTABLE})
+       find_package_handle_standard_args(PkgConfigHost
+           FOUND_VAR PkgConfigHost_FOUND
+           VERSION_VAR PKG_CONFIG_HOST_VERSION_STRING
+           REQUIRED_VARS PKG_CONFIG_HOST_EXECUTABLE
+       )
+  endif()
+endif()