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| author | Andrew Cagney <cagney@redhat.com> | 2000-05-12 04:37:00 +0000 |
|---|---|---|
| committer | Andrew Cagney <cagney@redhat.com> | 2000-05-12 04:37:00 +0000 |
| commit | 746a987d82a5517a78b9fe8e1827969984301252 (patch) | |
| tree | 2f89aef60e155a0feda68d0926f746dce11bab26 /gdb/configure.in | |
| parent | a76b448c6ff46befe77f3708d330edfc8c03da20 (diff) | |
| download | gdb-746a987d82a5517a78b9fe8e1827969984301252.zip gdb-746a987d82a5517a78b9fe8e1827969984301252.tar.gz gdb-746a987d82a5517a78b9fe8e1827969984301252.tar.bz2 | |
Check -W options before using them.
Diffstat (limited to 'gdb/configure.in')
| -rw-r--r-- | gdb/configure.in | 25 |
1 files changed, 16 insertions, 9 deletions
diff --git a/gdb/configure.in b/gdb/configure.in index 5f112c0..65e8cc0 100644 --- a/gdb/configure.in +++ b/gdb/configure.in @@ -498,20 +498,27 @@ AC_ARG_ENABLE(build-warnings, *) build_warnings=`echo "${enableval}" | sed -e "s/,/ /g"`;; esac if test x"$silent" != x"yes" && test x"$build_warnings" != x""; then - echo "Setting warning flags = $build_warnings" 6>&1 + echo "Setting compiler warning flags = $build_warnings" 6>&1 fi])dnl WARN_CFLAGS="" WERROR_CFLAGS="" if test "x${build_warnings}" != x -a "x$GCC" = xyes then - # Separate out the -Werror flag as some files just cannot be - # compiled with it enabled. - for w in ${build_warnings}; do - case $w in - -Werr*) WERROR_CFLAGS=-Werror ;; - *) WARN_CFLAGS="${WARN_CFLAGS} $w" - esac - done + AC_MSG_CHECKING(compiler warning flags) + # Separate out the -Werror flag as some files just cannot be + # compiled with it enabled. + for w in ${build_warnings}; do + case $w in + -Werr*) WERROR_CFLAGS=-Werror ;; + *) # Check that GCC accepts it + if $CC $w 2>&1 | grep 'unrecognized option' > /dev/null; then + : + else + WARN_CFLAGS="${WARN_CFLAGS} $w" + fi + esac + done + AC_MSG_RESULT(${WARN_CFLAGS}${WERROR_CFLAGS}) fi AC_SUBST(WARN_CFLAGS) AC_SUBST(WERROR_CFLAGS) |