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# Define the fmt library, its includes and the needed defines.
# format.cc is added to FMT_HEADERS for the header-only configuration.
set(FMT_HEADERS format.h format.cc ostream.h ostream.cc time.h)
if (HAVE_OPEN)
set(FMT_HEADERS ${FMT_HEADERS} posix.h)
set(FMT_SOURCES ${FMT_SOURCES} posix.cc)
endif ()
add_library(fmt ${FMT_SOURCES} ${FMT_HEADERS} ../ChangeLog.rst)
option(FMT_CPPFORMAT "Build cppformat library for backward compatibility." OFF)
if (FMT_CPPFORMAT)
message(WARNING "The cppformat library is deprecated, use fmt instead.")
add_library(cppformat ${FMT_SOURCES} ${FMT_HEADERS})
endif ()
# Starting with cmake 3.1 the CXX_STANDARD property can be used instead.
target_compile_options(fmt PUBLIC ${CPP11_FLAG})
if (FMT_PEDANTIC)
target_compile_options(fmt PRIVATE ${PEDANTIC_COMPILE_FLAGS})
endif ()
target_include_directories(fmt INTERFACE
$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}>
$<INSTALL_INTERFACE:include>)
set_target_properties(fmt PROPERTIES
VERSION ${FMT_VERSION} SOVERSION ${CPACK_PACKAGE_VERSION_MAJOR})
if (BUILD_SHARED_LIBS)
if (UNIX AND NOT APPLE)
# Fix rpmlint warning:
# unused-direct-shlib-dependency /usr/lib/libformat.so.1.1.0 /lib/libm.so.6.
target_link_libraries(fmt -Wl,--as-needed)
endif ()
target_compile_definitions(fmt PRIVATE FMT_EXPORT INTERFACE FMT_SHARED)
endif ()
#------------------------------------------------------------------------------
# additionally define a header only library when cmake is new enough
if (CMAKE_VERSION VERSION_GREATER 3.1.0 OR CMAKE_VERSION VERSION_EQUAL 3.1.0)
add_library(fmt-header-only INTERFACE)
target_compile_definitions(fmt-header-only INTERFACE FMT_HEADER_ONLY=1)
target_include_directories(fmt-header-only INTERFACE
$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}>
$<INSTALL_INTERFACE:include>)
endif ()
# Install targets.
if (FMT_INSTALL)
include(CMakePackageConfigHelpers)
set(FMT_CMAKE_DIR lib/cmake/fmt CACHE STRING
"Installation directory for cmake files, relative to ${CMAKE_INSTALL_PREFIX}.")
set(version_config ${PROJECT_BINARY_DIR}/fmt-config-version.cmake)
set(project_config ${PROJECT_BINARY_DIR}/fmt-config.cmake)
set(targets_export_name fmt-targets)
set (INSTALL_TARGETS fmt)
if (TARGET fmt-header-only)
set(INSTALL_TARGETS ${INSTALL_TARGETS} fmt-header-only)
endif ()
set(FMT_LIB_DIR lib CACHE STRING
"Installation directory for libraries, relative to ${CMAKE_INSTALL_PREFIX}.")
# Generate the version, config and target files into the build directory.
write_basic_package_version_file(
${version_config}
VERSION ${FMT_VERSION}
COMPATIBILITY AnyNewerVersion)
configure_package_config_file(
${PROJECT_SOURCE_DIR}/support/cmake/fmt-config.cmake.in
${project_config}
INSTALL_DESTINATION ${FMT_CMAKE_DIR})
export(TARGETS ${INSTALL_TARGETS} FILE ${PROJECT_BINARY_DIR}/${targets_export_name}.cmake)
# Install version, config and target files.
install(
FILES ${project_config} ${version_config}
DESTINATION ${FMT_CMAKE_DIR})
install(EXPORT ${targets_export_name} DESTINATION ${FMT_CMAKE_DIR})
# Install the library and headers.
install(TARGETS ${INSTALL_TARGETS} EXPORT ${targets_export_name} DESTINATION ${FMT_LIB_DIR})
install(FILES ${FMT_HEADERS} DESTINATION include/fmt)
if (FMT_CPPFORMAT)
install(TARGETS cppformat DESTINATION ${FMT_LIB_DIR})
endif ()
endif ()
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