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macro(zxing_add_package_stb)
unset (STB_FOUND CACHE)
if (ZXING_DEPENDENCIES STREQUAL "AUTO")
find_package(PkgConfig)
pkg_check_modules (STB IMPORTED_TARGET stb)
elseif (ZXING_DEPENDENCIES STREQUAL "LOCAL")
find_package(PkgConfig REQUIRED)
pkg_check_modules (STB REQUIRED IMPORTED_TARGET stb)
endif()
if (NOT STB_FOUND)
include(FetchContent)
FetchContent_Declare (stb
GIT_REPOSITORY https://github.com/nothings/stb.git)
FetchContent_MakeAvailable (stb)
add_library(stb::stb INTERFACE IMPORTED)
target_include_directories(stb::stb INTERFACE ${stb_SOURCE_DIR})
else()
add_library(stb::stb ALIAS PkgConfig::STB)
endif()
endmacro()
macro(zxing_add_package name depname git_repo git_rev)
unset(${name}_FOUND CACHE) # see https://github.com/zxing-cpp/zxing-cpp/commit/8db14eeead45e0f1961532f55061d5e4dd0f78be#commitcomment-66464026
if (ZXING_DEPENDENCIES STREQUAL "AUTO")
find_package (${name} CONFIG)
elseif (ZXING_DEPENDENCIES STREQUAL "LOCAL")
find_package (${name} REQUIRED CONFIG)
endif()
if (NOT ${name}_FOUND)
include(FetchContent)
FetchContent_Declare (${depname}
GIT_REPOSITORY ${git_repo}
GIT_TAG ${git_rev})
if (${depname} STREQUAL "googletest")
# Prevent overriding the parent project's compiler/linker settings on Windows
set (gtest_force_shared_crt ON CACHE BOOL "" FORCE)
endif()
#FetchContent_MakeAvailable (${depname})
# TODO: reqire cmake 3.28 and pass EXCLUDE_FROM_ALL to FetchContent_Declare instead of calling FetchContent_Populate below.
# This would fix a warning but cmake 3.28 is not in Debian bookworm but at least in Ubuntu 24.04 (LTS)
FetchContent_GetProperties(${depname})
if(NOT ${depname}_POPULATED)
FetchContent_Populate(${depname})
add_subdirectory(${${depname}_SOURCE_DIR} ${${depname}_BINARY_DIR} EXCLUDE_FROM_ALL) # prevent installing of dependencies
endif()
set (${name}_POPULATED TRUE) # this is supposed to be done in MakeAvailable but it seems not to?!?
endif()
endmacro()
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