diff options
| author | Damien Miller <djm@mindrot.org> | 2011-05-20 11:45:25 +1000 |
|---|---|---|
| committer | Damien Miller <djm@mindrot.org> | 2011-05-20 11:45:25 +1000 |
| commit | b176362d26dd746819b6287e4702bce90eefa2c1 (patch) | |
| tree | 91fbe7dbeed5ed3751256e9844621d908e908017 /aclocal.m4 | |
| parent | 14684a1f84e2c8fc949ccff1a6dce10e9bf52ac2 (diff) | |
- (djm) [aclocal.m4 configure.ac] since gcc-4.x ignores all -Wno-options
options, we should corresponding -W-option when trying to determine
whether it is accepted. Also includes a warning fix on the program
fragment uses (bad main() return type).
bz#1900 and bz#1901 reported by g.esp AT free.fr; ok dtucker@
Diffstat (limited to 'aclocal.m4')
| -rw-r--r-- | aclocal.m4 | 20 |
1 files changed, 19 insertions, 1 deletions
@@ -1,8 +1,26 @@ -dnl $Id: aclocal.m4,v 1.7 2011/05/05 03:48:37 djm Exp $ +dnl $Id: aclocal.m4,v 1.8 2011/05/20 01:45:25 djm Exp $ dnl dnl OpenSSH-specific autoconf macros dnl +dnl OSSH_CHECK_CFLAG_COMPILE(check_flag[, define_flag]) +dnl Check that $CC accepts a flag 'check_flag'. If it is supported append +dnl 'define_flag' to $CFLAGS. If 'define_flag' is not specified, then append +dnl 'check_flag'. +AC_DEFUN([OSSH_CHECK_CFLAG_COMPILE], [{ + AC_MSG_CHECKING([if $CC supports $1]) + saved_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS $1" + _define_flag="$2" + test "x$_define_flag" = "x" && _define_flag="$1" + AC_COMPILE_IFELSE([AC_LANG_SOURCE([[int main(void) { return 0; }]])], + [ AC_MSG_RESULT([yes]) + CFLAGS="$saved_CFLAGS $_define_flag"], + [ AC_MSG_RESULT([no]) + CFLAGS="$saved_CFLAGS" ] + ) +}]) + dnl OSSH_CHECK_HEADER_FOR_FIELD(field, header, symbol) dnl Does AC_EGREP_HEADER on 'header' for the string 'field' |