forked from mirrors/tftp-hpa-google
56 lines
1.6 KiB
Text
56 lines
1.6 KiB
Text
dnl --------------------------------------------------------------------------
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dnl PA_ADD_CFLAGS()
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dnl
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dnl Attempt to add the given option to CFLAGS, if it doesn't break compilation
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dnl --------------------------------------------------------------------------
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AC_DEFUN(PA_ADD_CFLAGS,
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[AC_MSG_CHECKING([if $CC accepts $1])
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pa_add_cflags__old_cflags="$CFLAGS"
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CFLAGS="$CFLAGS $1"
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AC_TRY_COMPILE([#include <stdio.h>],
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[printf("Hello, World!\n");],
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AC_MSG_RESULT([yes]),
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AC_MSG_RESULT([no])
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CFLAGS="$pa_add_cflags__old_cflags")])
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dnl --------------------------------------------------------------------------
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dnl PA_SIGSETJMP
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dnl
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dnl Do we have sigsetjmp/siglongjmp? (AC_CHECK_FUNCS doesn't seem to work
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dnl for these particular functions.)
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dnl --------------------------------------------------------------------------
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AC_DEFUN(PA_SIGSETJMP,
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[AC_MSG_CHECKING([for sigsetjmp])
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AC_TRY_LINK(
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[#include <setjmp.h>],
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[sigjmp_buf buf;
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sigsetjmp(buf,1);
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siglongjmp(buf,2);],
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AC_MSG_RESULT([yes])
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$1,
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AC_MSG_RESULT([no])
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$2)])
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dnl --------------------------------------------------------------------------
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dnl PA_MSGHDR_MSG_CONTROL
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dnl
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dnl Does struct msghdr have the msg_control field?
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dnl --------------------------------------------------------------------------
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AC_DEFUN(PA_MSGHDR_MSG_CONTROL,
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[AC_MSG_CHECKING([for msg_control in struct msghdr])
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AC_TRY_COMPILE(
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[
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#include <sys/types.h>
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#include <sys/socket.h>
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],
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[
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struct msghdr msg;
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void *p = (void *) &msg.msg_control;
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],
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[
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AC_DEFINE(HAVE_MSGHDR_MSG_CONTROL)
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AC_MSG_RESULT([yes])
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],
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[
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AC_MSG_RESULT([no])
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])])
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