48 lines
1.1 KiB
CMake
48 lines
1.1 KiB
CMake
#.rst:
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#
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# Adds C support.
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# Appends EXTRA_CFLAGS to CMAKE_C_FLAGS.
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# If environment variable CFLAGS is set, then the CFLAGS are used
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# and no other flags are used or appended.
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#
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# Variables used::
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#
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# EXTRA_CFLAGS
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#
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# Variables modified::
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#
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# CMAKE_C_FLAGS
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#
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# Environment variables used::
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#
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# CFLAGS
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#
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# autocmake.yml configuration::
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#
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# docopt:
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# - "--cc=<CC> C compiler [default: gcc]."
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# - "--extra-cc-flags=<EXTRA_CFLAGS> Extra C compiler flags [default: '']."
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# export: "'CC={0}'.format(arguments['--cc'])"
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# define: "'-DEXTRA_CFLAGS=\"{0}\"'.format(arguments['--extra-cc-flags'])"
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enable_language(C)
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if(NOT DEFINED CMAKE_C_COMPILER_ID)
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message(FATAL_ERROR "CMAKE_C_COMPILER_ID variable is not defined!")
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endif()
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if(NOT CMAKE_C_COMPILER_WORKS)
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message(FATAL_ERROR "CMAKE_C_COMPILER_WORKS is false!")
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endif()
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if(DEFINED EXTRA_CFLAGS)
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if(NOT EXTRA_CFLAGS STREQUAL "")
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${EXTRA_CFLAGS}")
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endif()
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endif()
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if(DEFINED ENV{CFLAGS})
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message(STATUS "CFLAGS is set to '$ENV{CFLAGS}'.")
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set(CMAKE_C_FLAGS "$ENV{CFLAGS}")
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endif()
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