fmt/CMakeLists.txt
Mario Werner 6d21fc43b9 add alias targets with fmt namespace
For the consumer it should not matter if fmt has been added to the
project as subdirectory or via find_package. With the alias targets
the library can be always imported via fmt::fmt.
2018-03-13 13:51:48 -04:00

222 lines
7.7 KiB
CMake

message(STATUS "CMake version: ${CMAKE_VERSION}")
cmake_minimum_required(VERSION 2.8.12)
# Determine if fmt is built as a subproject (using add_subdirectory)
# or if it is the master project.
set(MASTER_PROJECT OFF)
if (CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
set(MASTER_PROJECT ON)
endif ()
# Joins arguments and places the results in ${result_var}.
function(join result_var)
set(result )
foreach (arg ${ARGN})
set(result "${result}${arg}")
endforeach ()
set(${result_var} "${result}" PARENT_SCOPE)
endfunction()
# Set the default CMAKE_BUILD_TYPE to Release.
# This should be done before the project command since the latter can set
# CMAKE_BUILD_TYPE itself (it does so for nmake).
if (NOT CMAKE_BUILD_TYPE)
join(doc "Choose the type of build, options are: None(CMAKE_CXX_FLAGS or "
"CMAKE_C_FLAGS used) Debug Release RelWithDebInfo MinSizeRel.")
set(CMAKE_BUILD_TYPE Release CACHE STRING ${doc})
endif ()
option(FMT_PEDANTIC "Enable extra warnings and expensive tests." OFF)
# Options that control generation of various targets.
option(FMT_DOC "Generate the doc target." ${MASTER_PROJECT})
option(FMT_INSTALL "Generate the install target." ${MASTER_PROJECT})
option(FMT_TEST "Generate the test target." ${MASTER_PROJECT})
option(FMT_USE_CPP14 "Enable the addition of C++14 compiler flags." ON)
project(FMT)
# Get version from core.h
file(READ include/fmt/core.h core_h)
if (NOT core_h MATCHES "FMT_VERSION ([0-9]+)([0-9][0-9])([0-9][0-9])")
message(FATAL_ERROR "Cannot get FMT_VERSION from core.h.")
endif ()
# Use math to skip leading zeros if any.
math(EXPR CPACK_PACKAGE_VERSION_MAJOR ${CMAKE_MATCH_1})
math(EXPR CPACK_PACKAGE_VERSION_MINOR ${CMAKE_MATCH_2})
math(EXPR CPACK_PACKAGE_VERSION_PATCH ${CMAKE_MATCH_3})
join(FMT_VERSION ${CPACK_PACKAGE_VERSION_MAJOR}.${CPACK_PACKAGE_VERSION_MINOR}.
${CPACK_PACKAGE_VERSION_PATCH})
message(STATUS "Version: ${FMT_VERSION}")
message(STATUS "Build type: ${CMAKE_BUILD_TYPE}")
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH}
"${CMAKE_CURRENT_SOURCE_DIR}/support/cmake")
include(cxx14)
if (CMAKE_COMPILER_IS_GNUCXX OR (CMAKE_CXX_COMPILER_ID MATCHES "Clang"))
set(PEDANTIC_COMPILE_FLAGS -Wall -Wextra -Wshadow -pedantic)
endif ()
if (MASTER_PROJECT AND CMAKE_GENERATOR MATCHES "Visual Studio")
# If Microsoft SDK is installed create script run-msbuild.bat that
# calls SetEnv.cmd to set up build environment and runs msbuild.
# It is useful when building Visual Studio projects with the SDK
# toolchain rather than Visual Studio.
include(FindSetEnv)
if (WINSDK_SETENV)
set(MSBUILD_SETUP "call \"${WINSDK_SETENV}\"")
endif ()
# Set FrameworkPathOverride to get rid of MSB3644 warnings.
set(netfxpath "C:\\Program Files\\Reference Assemblies\\Microsoft\\Framework\\.NETFramework\\v4.0")
file(WRITE run-msbuild.bat "
${MSBUILD_SETUP}
${CMAKE_MAKE_PROGRAM} -p:FrameworkPathOverride=\"${netfxpath}\" %*")
endif ()
include(CheckSymbolExists)
if (WIN32)
check_symbol_exists(open io.h HAVE_OPEN)
else ()
check_symbol_exists(open fcntl.h HAVE_OPEN)
endif ()
function(add_headers VAR)
set(headers ${${VAR}})
foreach (header ${ARGN})
set(headers ${headers} include/fmt/${header})
endforeach()
set(${VAR} ${headers} PARENT_SCOPE)
endfunction()
# Define the fmt library, its includes and the needed defines.
# format.cc is added to FMT_HEADERS for the header-only configuration.
add_headers(FMT_HEADERS core.h format.h format.cc locale.h ostream.h printf.h
time.h)
if (HAVE_OPEN)
add_headers(FMT_HEADERS posix.h)
add_headers(FMT_SOURCES posix.cc)
endif ()
add_library(fmt ${FMT_SOURCES} ${FMT_HEADERS} README.rst ChangeLog.rst)
add_library(fmt::fmt ALIAS fmt)
# Starting with CMake 3.1 the CXX_STANDARD property can be used instead.
# Don't export -std since it may break projects that use other standards.
target_compile_options(fmt PRIVATE ${CPP14_FLAG})
if (FMT_PEDANTIC)
target_compile_options(fmt PRIVATE ${PEDANTIC_COMPILE_FLAGS})
endif ()
target_include_directories(fmt PUBLIC
$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>
$<INSTALL_INTERFACE:include>)
set_target_properties(fmt PROPERTIES
VERSION ${FMT_VERSION} SOVERSION ${CPACK_PACKAGE_VERSION_MAJOR}
DEBUG_POSTFIX d)
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)
add_library(fmt::fmt-header-only ALIAS fmt-header-only)
target_compile_definitions(fmt-header-only INTERFACE FMT_HEADER_ONLY=1)
target_include_directories(fmt-header-only INTERFACE
$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>
$<INSTALL_INTERFACE:include>)
endif ()
# Install targets.
if (FMT_INSTALL)
include(GNUInstallDirs)
include(CMakePackageConfigHelpers)
set(FMT_CMAKE_DIR ${CMAKE_INSTALL_LIBDIR}/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 ${CMAKE_INSTALL_LIBDIR} CACHE STRING
"Installation directory for libraries, relative to ${CMAKE_INSTALL_PREFIX}.")
set(FMT_INC_DIR ${CMAKE_INSTALL_INCLUDEDIR}/fmt CACHE STRING
"Installation directory for include files, 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})
# Use a namespace because CMake provides better diagnostics for namespaced
# imported targets.
export(TARGETS ${INSTALL_TARGETS} NAMESPACE fmt::
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},
NAMESPACE fmt::)
# Install the library and headers.
install(TARGETS ${INSTALL_TARGETS} EXPORT ${targets_export_name}
DESTINATION ${FMT_LIB_DIR})
install(FILES ${FMT_HEADERS} DESTINATION ${FMT_INC_DIR})
endif ()
if (FMT_DOC)
add_subdirectory(doc)
endif ()
if (FMT_TEST)
enable_testing()
add_subdirectory(test)
endif ()
set(gitignore ${PROJECT_SOURCE_DIR}/.gitignore)
if (MASTER_PROJECT AND EXISTS ${gitignore})
# Get the list of ignored files from .gitignore.
file (STRINGS ${gitignore} lines)
LIST(REMOVE_ITEM lines /doc/html)
foreach (line ${lines})
string(REPLACE "." "[.]" line "${line}")
string(REPLACE "*" ".*" line "${line}")
set(ignored_files ${ignored_files} "${line}$" "${line}/")
endforeach ()
set(ignored_files ${ignored_files}
/.git /breathe /format-benchmark sphinx/ .buildinfo .doctrees)
set(CPACK_SOURCE_GENERATOR ZIP)
set(CPACK_SOURCE_IGNORE_FILES ${ignored_files})
set(CPACK_SOURCE_PACKAGE_FILE_NAME fmt-${FMT_VERSION})
set(CPACK_PACKAGE_NAME fmt)
set(CPACK_RESOURCE_FILE_README ${PROJECT_SOURCE_DIR}/README.rst)
include(CPack)
endif ()