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CMake improvements when vendoring with FetchContent #267

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CMake improvements when vendoring with FetchContent #267

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65 changes: 36 additions & 29 deletions CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -47,7 +47,10 @@ if(SPNG_STATIC)
list(APPEND spng_TARGETS spng_static)
endif()

find_package(ZLIB REQUIRED)
if(NOT TARGET ZLIB::ZLIB)
find_package(ZLIB REQUIRED)
endif()

foreach(spng_TARGET ${spng_TARGETS})
target_include_directories(${spng_TARGET} PUBLIC
$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/spng>
Expand All @@ -71,38 +74,42 @@ write_basic_package_version_file(${project_version_config}
COMPATIBILITY SameMajorVersion
)

install(
TARGETS ${spng_TARGETS}
EXPORT ${targets_export_name}
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
INCLUDES DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
)
if(NOT SKIP_INSTALL_HEADERS AND NOT SKIP_INSTALL_ALL)
install(FILES spng/spng.h DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
endif()

install(FILES spng/spng.h DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
if (NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL)
install(
TARGETS ${spng_TARGETS}
EXPORT ${targets_export_name}
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
INCLUDES DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
)

install(
FILES ${project_config} ${project_version_config}
DESTINATION ${config_install_dir}
)
install(
FILES ${project_config} ${project_version_config}
DESTINATION ${config_install_dir}
)

install(
EXPORT ${targets_export_name}
NAMESPACE "spng::"
DESTINATION ${config_install_dir}
)
install(
EXPORT ${targets_export_name}
NAMESPACE "spng::"
DESTINATION ${config_install_dir}
)

if(NOT CMAKE_HOST_WIN32 OR CYGWIN OR MINGW)
set(prefix ${CMAKE_INSTALL_PREFIX})
set(exec_prefix ${CMAKE_INSTALL_PREFIX})
set(libdir ${CMAKE_INSTALL_FULL_LIBDIR})
set(includedir ${CMAKE_INSTALL_FULL_INCLUDEDIR})
set(LIBS "-lm")
if(NOT CMAKE_HOST_WIN32 OR CYGWIN OR MINGW)
set(prefix ${CMAKE_INSTALL_PREFIX})
set(exec_prefix ${CMAKE_INSTALL_PREFIX})
set(libdir ${CMAKE_INSTALL_FULL_LIBDIR})
set(includedir ${CMAKE_INSTALL_FULL_INCLUDEDIR})
set(LIBS "-lm")

foreach(libname ${spng_TARGETS})
configure_file(${CMAKE_CURRENT_SOURCE_DIR}/cmake/libspng.pc.in ${CMAKE_CURRENT_BINARY_DIR}/cmake/lib${libname}.pc @ONLY)
foreach(libname ${spng_TARGETS})
configure_file(${CMAKE_CURRENT_SOURCE_DIR}/cmake/libspng.pc.in ${CMAKE_CURRENT_BINARY_DIR}/cmake/lib${libname}.pc @ONLY)

install(FILES ${CMAKE_CURRENT_BINARY_DIR}/cmake/lib${libname}.pc DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
endforeach()
install(FILES ${CMAKE_CURRENT_BINARY_DIR}/cmake/lib${libname}.pc DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
endforeach()
endif()
endif()
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