60 lines
1.7 KiB
CMake
60 lines
1.7 KiB
CMake
add_library(MathFunctions MathFunctions.cxx)
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# should we use our own math functions
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option(USE_MYMATH "Use tutorial provided math implementation" ON)
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if (USE_MYMATH)
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target_compile_definitions(MathFunctions PRIVATE "USE_MYMATH")
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# library that just does sqrt
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add_library(SqrtLibrary STATIC
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mysqrt.cxx
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)
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# link SqrtLibrary to tutorial_compiler_flags
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target_link_libraries(SqrtLibrary PUBLIC tutorial_compiler_flags)
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# does this system provide the log and exp functions?
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include(CheckCXXSourceCompiles)
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check_cxx_source_compiles("
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#include <cmath>
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int main() {
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std::log(1.0);
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return 0;
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}
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" HAVE_LOG)
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check_cxx_source_compiles("
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#include <cmath>
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int main() {
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std::exp(1.0);
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return 0;
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}
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" HAVE_EXP)
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# add compile definitions
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if(HAVE_LOG AND HAVE_EXP)
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target_compile_definitions(SqrtLibrary
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PRIVATE "HAVE_LOG" "HAVE_EXP"
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)
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endif()
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target_link_libraries(MathFunctions PRIVATE SqrtLibrary)
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endif()
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# state that anybody linking to us needs to include the current source dir
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# to find MathFunctions.h, while we don't.
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target_include_directories(MathFunctions
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INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}
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)
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# link MathFunctions to tutorial_compiler_flags
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target_link_libraries(MathFunctions PUBLIC tutorial_compiler_flags)
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# install libs
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set(installable_libs MathFunctions tutorial_compiler_flags)
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if(TARGET SqrtLibrary)
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list(APPEND installable_libs SqrtLibrary)
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endif()
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install(TARGETS ${installable_libs} DESTINATION lib)
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# install include headers
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install(FILES MathFunctions.h DESTINATION include)
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