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add_library(MathFunctions MathFunctions.cxx)
# state that anybody linking to us needs to include the current source dir
# to find MathFunctions.h, while we don't.
target_include_directories(MathFunctions
INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}
)
# should we use our own math functions
option(USE_MYMATH "Use tutorial provided math implementation" ON)
if (USE_MYMATH)
target_compile_definitions(MathFunctions PRIVATE "USE_MYMATH")
# library that just does sqrt
add_library(SqrtLibrary STATIC
mysqrt.cxx
)
target_link_libraries(SqrtLibrary PUBLIC tutorial_compiler_flags)
# TODO 1: Include CheckCXXSourceCompiles
# TODO 2: Use check_cxx_source_compiles with simple C++ code to verify
# availability of:
# * std::log
# * std::exp
# Store the results in HAVE_LOG and HAVE_EXP respectively.
# Hint: Sample C++ code which uses log:
# #include <cmath>
# int main() {
# std::log(1.0);
# return 0;
# }
# TODO 3: Conditionally on HAVE_LOG and HAVE_EXP, add private compile
# definitions "HAVE_LOG" and "HAVE_EXP" to the SqrtLibrary target.
# Hint: Use target_compile_definitions()
target_link_libraries(MathFunctions PRIVATE SqrtLibrary)
endif()
# link our compiler flags interface library
target_link_libraries(MathFunctions PUBLIC tutorial_compiler_flags)
# install libs
set(installable_libs MathFunctions tutorial_compiler_flags)
if(TARGET SqrtLibrary)
list(APPEND installable_libs SqrtLibrary)
endif()
install(TARGETS ${installable_libs} DESTINATION lib)
# install include headers
install(FILES MathFunctions.h DESTINATION include)
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