Some tests performed by configure to check what is supported can be broken if -Werror is defined in CFLAGS variable when configure is executed. This patch checks if CFLAGS contains -Werror and shows a warning for user recommending to use --enable-compile-warnings=error instead. --- Please, note that this is a work in progress patch and suggestions are welcome. configure.ac | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/configure.ac b/configure.ac index 3e90672..38d6263 100644 --- a/configure.ac +++ b/configure.ac @@ -3232,3 +3232,10 @@ AC_MSG_NOTICE([Privileges]) AC_MSG_NOTICE([]) AC_MSG_NOTICE([ QEMU: $QEMU_USER:$QEMU_GROUP]) AC_MSG_NOTICE([]) + +# -Werror can break some configure tests +if echo "$CFLAGS" | sed -e 's/\s\+/\n/g' | grep -E '^-Werror$' >/dev/null 2>&1; then + AC_MSG_WARN([CFLAGS contains -Werror flag. This might break some tests performed by]) + AC_MSG_WARN([configure and cause some compilation errors.]) + AC_MSG_WARN([Please use --enable-compile-warnings=error instead.]) +fi