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55dd65cddc
- Add some features to autoconf that makes it cleaner and faster - Modernize some of the autoconf macros - Update compiler.h with some C23 features Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
23 lines
765 B
Plaintext
23 lines
765 B
Plaintext
dnl --------------------------------------------------------------------------
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dnl PA_PROG_CC()
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dnl
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dnl Similar to AC_PROG_CC, but add a prototype for main() to
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dnl AC_INCLUDES_DEFAULT to avoid -Werror from breaking compilation.
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dnl (Very odd!)
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dnl
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dnl It can optionally take lists of CFLAGS to be added. For each argument,
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dnl only the *first* flag accepted is added.
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dnl
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dnl BUG: this expands AC_CHECK_HEADERS_ONCE() before the flags get
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dnl probed. Don't know yet how to fix that.
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dnl --------------------------------------------------------------------------
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AC_DEFUN_ONCE([PA_PROG_CC],
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[AC_REQUIRE([AC_PROG_CC])
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AC_USE_SYSTEM_EXTENSIONS
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ac_includes_default="$ac_includes_default
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#ifndef __cplusplus
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extern int main(void);
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#endif"
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PA_FIND_FLAGS(CFLAGS,[$1])
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])
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