mirror of
https://code.semirocket.science/wrapsix
synced 2024-11-14 01:51:14 +02:00
62 lines
1.5 KiB
Plaintext
62 lines
1.5 KiB
Plaintext
|
dnl as-compiler-flag.m4 0.1.0
|
||
|
|
|
||
|
|
dnl autostars m4 macro for detection of compiler flags
|
||
|
|
|
||
|
|
dnl David Schleef <ds@schleef.org>
|
||
|
|
|
||
|
|
dnl $Id: as-compiler-flag.m4,v 1.1 2005/12/15 23:35:19 ds Exp $
|
||
|
|
|
||
|
|
dnl AS_COMPILER_FLAG(CFLAGS, ACTION-IF-ACCEPTED, [ACTION-IF-NOT-ACCEPTED])
|
||
|
|
dnl Tries to compile with the given CFLAGS.
|
||
|
|
dnl Runs ACTION-IF-ACCEPTED if the compiler can compile with the flags,
|
||
|
|
dnl and ACTION-IF-NOT-ACCEPTED otherwise.
|
||
|
|
|
||
|
|
AC_DEFUN([AS_COMPILER_FLAG],
|
||
|
|
[
|
||
|
|
AC_MSG_CHECKING([to see if compiler understands $1])
|
||
|
|
|
||
|
|
save_CFLAGS="$CFLAGS"
|
||
|
|
CFLAGS="$CFLAGS $1"
|
||
|
|
|
||
|
|
AC_TRY_COMPILE([ ], [], [flag_ok=yes], [flag_ok=no])
|
||
|
|
CFLAGS="$save_CFLAGS"
|
||
|
|
|
||
|
|
if test "X$flag_ok" = Xyes ; then
|
||
|
|
m4_ifvaln([$2],[$2])
|
||
|
|
true
|
||
|
|
else
|
||
|
|
m4_ifvaln([$3],[$3])
|
||
|
|
true
|
||
|
|
fi
|
||
|
|
AC_MSG_RESULT([$flag_ok])
|
||
|
|
])
|
||
|
|
|
||
|
|
dnl AS_COMPILER_FLAGS(VAR, FLAGS)
|
||
|
|
dnl Tries to compile with the given CFLAGS.
|
||
|
|
|
||
|
|
AC_DEFUN([AS_COMPILER_FLAGS],
|
||
|
|
[
|
||
|
|
list=$2
|
||
|
|
flags_supported=""
|
||
|
|
flags_unsupported=""
|
||
|
|
AC_MSG_CHECKING([for supported compiler flags])
|
||
|
|
for each in $list
|
||
|
|
do
|
||
|
|
save_CFLAGS="$CFLAGS"
|
||
|
|
CFLAGS="$CFLAGS $each"
|
||
|
|
AC_TRY_COMPILE([ ], [], [flag_ok=yes], [flag_ok=no])
|
||
|
|
CFLAGS="$save_CFLAGS"
|
||
|
|
|
||
|
|
if test "X$flag_ok" = Xyes ; then
|
||
|
|
flags_supported="$flags_supported $each"
|
||
|
|
else
|
||
|
|
flags_unsupported="$flags_unsupported $each"
|
||
|
|
fi
|
||
|
|
done
|
||
|
|
AC_MSG_RESULT([$flags_supported])
|
||
|
|
if test "X$flags_unsupported" != X ; then
|
||
|
|
AC_MSG_WARN([unsupported compiler flags: $flags_unsupported])
|
||
|
|
fi
|
||
|
|
$1="$$1 $flags_supported"
|
||
|
|
])
|