mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-26 14:20:59 +00:00
83 lines
2.4 KiB
Text
83 lines
2.4 KiB
Text
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dnl ==================================================================
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dnl Checks for compiler attributes
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dnl ==================================================================
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AC_MSG_CHECKING(for __attribute__)
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AC_COMPILE_IFELSE(
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[AC_LANG_PROGRAM(
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[[static __attribute__ ((unused)) const char *foo = "bar";]]
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[[int bar(void);]],
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[[return bar();]])],
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[AC_DEFINE(HAVE___ATTRIBUTE__)
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AC_MSG_RESULT(yes)],
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[AC_MSG_RESULT(no)]
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)
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AH_VERBATIM([HAVE___ATTRIBUTE__],
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[/* Define this if the GCC __attribute__ keyword is available */
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#undef HAVE___ATTRIBUTE__
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#ifndef HAVE___ATTRIBUTE__
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# define __attribute__(x)
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#endif])
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AC_MSG_CHECKING(for __attribute__ ((visibility)))
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AC_COMPILE_IFELSE(
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[AC_LANG_PROGRAM(
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[[void foo (void);]]
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[[__attribute__ ((visibility ("default"))) void foo (void) {}]]
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[[int bar(void);]],
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[[return bar();]]
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)],
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[AC_DEFINE(HAVE___ATTRIBUTE__VISIBILITY)
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AC_MSG_RESULT(yes)],
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[AC_MSG_RESULT(no)]
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)
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AH_VERBATIM([HAVE___ATTRIBUTE__VISIBILITY],
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[/* Define this if the GCC visibility __attribute__ is available */
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#undef HAVE___ATTRIBUTE__VISIBILITY
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#ifdef HAVE___ATTRIBUTE__VISIBILITY
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# define VISIBLE __attribute__((visibility ("default")))
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#else
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# define VISIBLE
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#endif])
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AC_MSG_CHECKING(for __attribute__ ((designated_init)))
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AC_COMPILE_IFELSE(
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[AC_LANG_PROGRAM(
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[[struct x { char y; } __attribute__ ((designated_init));]]
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[[int bar(void);]],
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[[return bar();]]
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)],
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[AC_DEFINE(HAVE___ATTRIBUTE__DESIGNATED_INIT)
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AC_MSG_RESULT(yes)],
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[AC_MSG_RESULT(no)]
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)
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AH_VERBATIM([HAVE___ATTRIBUTE__DESIGNATED_INIT],
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[/* Define this if the GCC designated_init __attribute__ is available */
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#undef HAVE___ATTRIBUTE__DESIGNATED_INIT
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#ifdef HAVE___ATTRIBUTE__DESIGNATED_INIT
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# define DESIGNATED_INIT __attribute__((designated_init))
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#else
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# define DESIGNATED_INIT
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#endif])
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if test "x$SYSTYPE" = "xWIN32"; then
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AC_MSG_CHECKING(for __attribute__ ((gcc_struct)))
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AC_COMPILE_IFELSE(
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[AC_LANG_PROGRAM(
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[[typedef struct { int foo; }]]
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[[__attribute__ ((gcc_struct)) gcc_struct_test;]],
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[[return gcc_struct_test.foo]])],
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[AC_DEFINE(HAVE___ATTRIBUTE__GCC_STRUCT)
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AC_MSG_RESULT(yes)],
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[AC_MSG_RESULT(no)
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])
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fi
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AH_VERBATIM([HAVE___ATTRIBUTE__GCC_STRUCT],
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[/* Define this if the GCC gcc_struct __attribute__ is available */
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#undef HAVE___ATTRIBUTE__GCC_STRUCT
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#ifdef HAVE___ATTRIBUTE__GCC_STRUCT
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# define GCC_STRUCT __attribute__((gcc_struct))
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#else
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# define GCC_STRUCT
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#endif])
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