forked from Lainports/opnsense-ports
31 lines
1.1 KiB
CMake
31 lines
1.1 KiB
CMake
--- cmake/os/FreeBSD.cmake.orig 2018-10-04 05:48:22 UTC
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+++ cmake/os/FreeBSD.cmake
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@@ -30,6 +30,20 @@ IF(NOT FORCE_UNSUPPORTED_COMPILER)
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IF(NOT HAVE_SUPPORTED_CLANG_VERSION)
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MESSAGE(FATAL_ERROR "Clang 3.3 or newer is required!")
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ENDIF()
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+ CHECK_C_SOURCE_RUNS("
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+ int main()
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+ {
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+ return (__clang_major__ >= 4);
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+ }" I386_ATOMIC_BUILTINS)
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+ IF((CMAKE_SYSTEM_PROCESSOR MATCHES "i386") AND (NOT I386_ATOMIC_BUILTINS))
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+ SET(HAVE_GCC_ATOMIC_BUILTINS CACHE INTERNAL "")
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+ ENDIF()
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+ ELSEIF(CMAKE_COMPILER_IS_GNUCC)
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+ EXECUTE_PROCESS(COMMAND ${CMAKE_C_COMPILER} -dumpversion
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+ OUTPUT_VARIABLE GCC_VERSION)
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+ IF(GCC_VERSION VERSION_LESS 4.4)
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+ MESSAGE(FATAL_ERROR "GCC 4.4 or newer is required!")
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+ ENDIF()
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ELSE()
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MESSAGE(FATAL_ERROR "Unsupported compiler!")
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ENDIF()
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@@ -38,4 +52,6 @@ ENDIF()
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# Should not be needed any more, but kept for easy resurrection if needed
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# #Legacy option, maybe not needed anymore , taken as is from autotools build
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# ADD_DEFINITIONS(-DNET_RETRY_COUNT=1000000)
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-
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+# For GCC maybe it's also good idea to use
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+# ADD_DEFINITIONS(-D_GNU_SOURCE)
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+
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