qt5base-lts/cmake/FindWrapSystemHarfbuzz.cmake
Alexandru Croitor 3c52f8af9d CMake: pro2cmake: Specify library versions for 3rd party libraries
If certain 3rd party libraries have a version that's not suitable for
Qt, the configure summary should say so, rather than use them and fail
at build time.

With the current situation, we have to duplicate the version
information from the configure.json files in helper.py, by assigning
the version number as an extra find_package variable.

Rerunning configurejson2cmake then embeds this version info into the
qt_find_package calls in configure.cmake.

Some of the Find modules are rewritten to take the  specified version
into account when looking for the libraries.
This involves moving around the code for creating a target, after
calling find_package_handle_standard_args() so we know if a good
enough version was found.

Task-number: QTBUG-82917
Change-Id: I139748d8090e0630cda413362760034dc3483e11
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2020-08-10 11:56:54 +02:00

63 lines
2.5 KiB
CMake

# We can't create the same interface imported target multiple times, CMake will complain if we do
# that. This can happen if the find_package call is done in multiple different subdirectories.
if(TARGET WrapSystemHarfbuzz::WrapSystemHarfbuzz)
set(WrapSystemHarfbuzz_FOUND TRUE)
return()
endif()
set(WrapSystemHarfbuzz_REQUIRED_VARS __harfbuzz_found)
find_package(harfbuzz ${${CMAKE_FIND_PACKAGE_NAME}_FIND_VERSION} QUIET)
# Gentoo has some buggy version of a harfbuzz Config file. Check if include paths are valid.
set(__harfbuzz_target_name "harfbuzz::harfbuzz")
if(harfbuzz_FOUND AND TARGET "${__harfbuzz_target_name}")
get_property(__harfbuzz_include_paths TARGET "${__harfbuzz_target_name}"
PROPERTY INTERFACE_INCLUDE_DIRECTORIES)
foreach(__harfbuzz_include_dir ${__harfbuzz_include_paths})
if(NOT EXISTS "${__harfbuzz_include_dir}")
# Must be the broken Gentoo harfbuzzConfig.cmake file. Try to use pkg-config instead.
set(__harfbuzz_broken_config_file TRUE)
break()
endif()
endforeach()
set(__harfbuzz_found TRUE)
if(harfbuzz_VERSION)
set(WrapSystemHarfbuzz_VERSION "${harfbuzz_VERSION}")
endif()
endif()
if(__harfbuzz_broken_config_file OR NOT __harfbuzz_found)
list(PREPEND WrapSystemHarfbuzz_REQUIRED_VARS HARFBUZZ_LIBRARIES HARFBUZZ_INCLUDE_DIRS)
find_package(PkgConfig QUIET)
pkg_check_modules(PC_HARFBUZZ harfbuzz IMPORTED_TARGET)
find_path(HARFBUZZ_INCLUDE_DIRS
NAMES harfbuzz/hb.h
HINTS ${PC_HARFBUZZ_INCLUDEDIR})
find_library(HARFBUZZ_LIBRARIES
NAMES harfbuzz
HINTS ${PC_HARFBUZZ_LIBDIR})
set(__harfbuzz_target_name "PkgConfig::PC_HARFBUZZ")
set(__harfbuzz_found TRUE)
if(PC_HARFBUZZ_VERSION)
set(WrapSystemHarfbuzz_VERSION "${PC_HARFBUZZ_VERSION}")
endif()
endif()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(WrapSystemHarfbuzz
REQUIRED_VARS ${WrapSystemHarfbuzz_REQUIRED_VARS}
VERSION_VAR WrapSystemHarfbuzz_VERSION)
if(WrapSystemHarfbuzz_FOUND)
add_library(WrapSystemHarfbuzz::WrapSystemHarfbuzz INTERFACE IMPORTED)
target_link_libraries(WrapSystemHarfbuzz::WrapSystemHarfbuzz
INTERFACE "${__harfbuzz_target_name}")
endif()
unset(__harfbuzz_target_name)
unset(__harfbuzz_found)
unset(__harfbuzz_include_dir)
unset(__harfbuzz_broken_config_file)