Autoconf: new macro AS_COMPILER_FLAGS to check flag support
* macros/as-compiler-flags.m4 configure.ac: add a new files of autoconf macro to check support of warning flags, add needed line in configure.ac to define variable WARNING_FLAGS, containing only supported flags.
This commit is contained in:
parent
07f252569b
commit
ef585a8b76
|
@ -95,6 +95,7 @@ AC_PROG_LN_S
|
|||
AC_LIBTOOL_WIN32_DLL
|
||||
AM_PROG_LIBTOOL
|
||||
AC_SUBST(LIBTOOL_DEPS)
|
||||
AS_COMPILER_FLAGS(WARNING_FLAGS, "-Wall -Wextra -Wno-missing-field-initializers -Wno-unused-parameter -Wold-style-definition -Wdeclaration-after-statement -Wmissing-declarations -Wredundant-decls -Wmissing-noreturn -Wshadow -Wpointer-arith -Wcast-align -Wwrite-strings -Winline -Wformat-nonliteral -Wformat-security -Wswitch-enum -Wswitch-default -Winit-self -Wmissing-include-dirs -Wundef -Waggregate-return -Wmissing-format-attribute -Wnested-externs")
|
||||
|
||||
dnl Find tar command for make dist
|
||||
AC_CHECK_PROGS(TAR, gnutar gtar tar)
|
||||
|
|
|
@ -0,0 +1,62 @@
|
|||
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"
|
||||
])
|
||||
|
Loading…
Reference in New Issue