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hpa 1999-09-26 06:32:41 +00:00
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aclocal.m4 vendored Normal file
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dnl --------------------------------------------------------------------------
dnl PA_ADD_CFLAGS()
dnl
dnl Attempt to add the given option to CFLAGS, if it doesn't break compilation
dnl --------------------------------------------------------------------------
AC_DEFUN(PA_ADD_CFLAGS,
[AC_MSG_CHECKING([if $CC accepts $1])
pa_add_cflags__old_cflags="$CFLAGS"
CFLAGS="$CFLAGS $1"
AC_TRY_COMPILE([#include <stdio.h>],
[printf("Hello, World!\n");],
AC_MSG_RESULT([yes]),
AC_MSG_RESULT([no])
CFLAGS="$pa_add_cflags__old_cflags")])
dnl --------------------------------------------------------------------------
dnl PA_BSD_SIGNAL()
dnl
dnl Test for BSD signal semantics. Set shell variable BSD_SIGNAL=1 if OK.
dnl May modify CFLAGS and/or LIBS.
dnl --------------------------------------------------------------------------
AC_DEFUN(PA_CHECK_BSD_SIGNAL,
[AC_TRY_RUN([
#include <unistd.h>
#include <signal.h>
int count=0;
handle() { count++; }
int main() {
int pid=getpid();
signal(SIGINT, handle);
kill(pid,SIGINT);
kill(pid,SIGINT);
kill(pid,SIGINT);
if (count!=3) return 1;
return 0;
}
], BSD_SIGNAL=1)])
AC_DEFUN(PA_BSD_SIGNAL,
[AC_MSG_CHECKING([for BSD signal semantics])
PA_CHECK_BSD_SIGNAL()
if test -z "$BSD_SIGNAL"; then
AC_MSG_RESULT([no])
AC_MSG_CHECKING([if -D__USE_BSD_SIGNAL helps])
pa_bsd_signal__old_cflags="$CFLAGS"
CFLAGS="$CFLAGS -D__USE_BSD_SIGNAL"
PA_CHECK_BSD_SIGNAL()
if test -z "$BSD_SIGNAL"; then
AC_MSG_RESULT([no])
CFLAGS="$pa_bsd_signal__old_cflags"
AC_MSG_CHECKING([if -lbsd helps])
pa_bsd_signal__old_libs="$LIBS"
LIBS="$LIBS -lbsd"
PA_CHECK_BSD_SIGNAL()
if test -z "$BSD_SIGNAL"; then
AC_MSG_RESULT([no])
LIBS="$pa_bsd_signal__old_libs"
else
AC_MSG_RESULT([yes])
fi
else
AC_MSG_RESULT([yes])
fi
else
AC_MSG_RESULT([yes])
fi
])