77 lines
2.4 KiB
CMake
77 lines
2.4 KiB
CMake
# FindSSP.cmake
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#
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# Find libssp necessary when using gcc with e.g. -fstack-protector=strong
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#
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# See: http://wiki.osdev.org/Stack_Smashing_Protector
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#
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# To use:
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#
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# put a copy into your <project_root>/cmake/
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#
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# In your main CMakeLists.txt do something like this:
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#
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# if(WIN32)
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# set(SSP_STATIC ON)
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# endif()
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#
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# find_package(SSP)
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#
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# if(SSP_LIBRARY)
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# set(CMAKE_CXX_LINK_EXECUTABLE "${CMAKE_CXX_LINK_EXECUTABLE} ${SSP_LIBRARY}")
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# set(CMAKE_C_LINK_EXECUTABLE "${CMAKE_C_LINK_EXECUTABLE} ${SSP_LIBRARY}")
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# endif()
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# only do this when compiling with gcc/g++
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if(NOT CMAKE_COMPILER_IS_GNUCXX)
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return()
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endif()
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function(FindSSP)
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if(NOT CMAKE_CXX_COMPILER AND CMAKE_C_COMPILER)
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set(CMAKE_CXX_COMPILER ${CMAKE_C_COMPILER})
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endif()
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foreach(arg ${CMAKE_CXX_COMPILER_ARG1} ${CMAKE_CXX_COMPILER_ARG2} ${CMAKE_CXX_COMPILER_ARG3} ${CMAKE_CXX_COMPILER_ARG4} ${CMAKE_CXX_COMPILER_ARG5} ${CMAKE_CXX_COMPILER_ARG6} ${CMAKE_CXX_COMPILER_ARG7} ${CMAKE_CXX_COMPILER_ARG8} ${CMAKE_CXX_COMPILER_ARG9})
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string(STRIP ${arg} arg)
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set(gcc_args "${gcc_args};${arg}")
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endforeach()
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execute_process(COMMAND ${CMAKE_CXX_COMPILER} ${gcc_args} --print-prog-name=gcc OUTPUT_VARIABLE GCC_EXECUTABLE OUTPUT_STRIP_TRAILING_WHITESPACE)
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if(WIN32 AND NOT MSYS)
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execute_process(COMMAND where.exe ${GCC_EXECUTABLE} OUTPUT_VARIABLE GCC_EXECUTABLE OUTPUT_STRIP_TRAILING_WHITESPACE)
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else()
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execute_process(COMMAND sh -c "command -v ${GCC_EXECUTABLE}" OUTPUT_VARIABLE GCC_EXECUTABLE OUTPUT_STRIP_TRAILING_WHITESPACE)
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endif()
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get_filename_component(GCC_DIRNAME "${GCC_EXECUTABLE}" DIRECTORY)
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execute_process(COMMAND ${CMAKE_CXX_COMPILER} ${gcc_args} --print-libgcc-file-name OUTPUT_VARIABLE LIBGCC_FILE OUTPUT_STRIP_TRAILING_WHITESPACE)
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get_filename_component(LIBGCC_DIRNAME "${LIBGCC_FILE}" DIRECTORY)
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set(SSP_SEARCH_PATHS ${GCC_DIRNAME} ${LIBGCC_DIRNAME})
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if(SSP_STATIC)
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if(WIN32)
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set(CMAKE_FIND_LIBRARY_SUFFIXES .lib .a)
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else()
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set(CMAKE_FIND_LIBRARY_SUFFIXES .a)
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endif()
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endif()
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find_library(SSP_LIBRARY
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NAMES ssp libssp
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HINTS ${SSP_SEARCH_PATHS}
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PATH_SUFFIXES lib64 lib lib/x64 lib/x86
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)
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set(SSP_LIBRARY PARENT_SCOPE)
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endfunction()
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FindSSP()
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(SSP REQUIRED_VARS SSP_LIBRARY)
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