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cmake_minimum_required(VERSION 3.14)
project(tinyexpr LANGUAGES C)
include(CheckSymbolExists)
include(GNUInstallDirs)
if(WIN32 AND BUILD_SHARED_LIBS)
add_library(tinyexpr tinyexpr.c exports.def)
else()
add_library(tinyexpr tinyexpr.c)
endif()
target_include_directories(
tinyexpr
PUBLIC
$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
)
# https://stackoverflow.com/questions/32816646/can-cmake-detect-if-i-need-to-link-to-libm-when-using-pow-in-c
if(NOT POW_FUNCTION_EXISTS AND NOT NEED_LINKING_AGAINST_LIBM)
check_symbol_exists(pow "math.h" POW_FUNCTION_EXISTS)
if(NOT POW_FUNCTION_EXISTS)
unset(POW_FUNCTION_EXISTS CACHE)
list(APPEND CMAKE_REQUIRED_LIBRARIES m)
check_symbol_exists(pow "math.h" POW_FUNCTION_EXISTS)
if(POW_FUNCTION_EXISTS)
set(NEED_LINKING_AGAINST_LIBM True CACHE BOOL "" FORCE)
else()
message(FATAL_ERROR "Failed making the pow() function available")
endif()
endif()
endif()
if(NEED_LINKING_AGAINST_LIBM)
target_link_libraries(tinyexpr PUBLIC m)
endif()
set_target_properties(tinyexpr PROPERTIES PUBLIC_HEADER tinyexpr.h)
install(TARGETS tinyexpr EXPORT unofficial-tinyexpr-config)
install(
EXPORT unofficial-tinyexpr-config
NAMESPACE unofficial::tinyexpr::
DESTINATION share/unofficial-tinyexpr
PERMISSIONS OWNER_READ OWNER_WRITE GROUP_READ WORLD_READ
)
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