dnl @synopsis VL_PROG_CC_WARNINGS([ANSI]) dnl dnl Enables a high level of warnings for the C compiler. Optionally, dnl if the first argument is nonempty, turns on flags which enforce and/or dnl enable proper ANSI C if such are known with the compiler used. dnl dnl Currently this macro knows about GCC, Solaris C compiler, dnl Digital Unix C compiler, C for AIX Compiler, HP-UX C compiler, dnl IRIX C compiler, NEC SX-5 (Super-UX 10) C compiler, and Cray J90 dnl (Unicos 10.0.0.8) C compiler. dnl dnl @version 1.2 dnl @author Ville Laurikari dnl AC_DEFUN([VL_PROG_CC_WARNINGS], [ # Don't override if CFLAGS was already set. if test -z "$ac_env_CFLAGS_set"; then ansi=$1 if test -z "$ansi"; then msg="for C compiler warning flags" else msg="for C compiler warning and ANSI conformance flags" fi AC_CACHE_CHECK($msg, vl_cv_prog_cc_warnings, [ if test -n "$CC"; then cat > conftest.c <&1 | grep -i "WorkShop" > /dev/null 2>&1 && $CC -c -v -Xc conftest.c > /dev/null 2>&1 && test -f conftest.o; then if test -z "$ansi"; then vl_cv_prog_cc_warnings="-v" else vl_cv_prog_cc_warnings="-v -Xc" fi dnl Compaq (formerly Digital Unix) C compiler elif ($CC -V 2>&1 | grep -i "Digital UNIX Compiler" > /dev/null 2>&1 || $CC -V 2>&1 | grep -i "Compaq C" > /dev/null 2>&1) && $CC -c -verbose -w0 -warnprotos -std1 conftest.c > /dev/null 2>&1 && test -f conftest.o; then if test -z "$ansi"; then vl_cv_prog_cc_warnings="-verbose -w0 -warnprotos" else vl_cv_prog_cc_warnings="-verbose -w0 -warnprotos -std1" fi dnl C for AIX Compiler elif $CC 2>&1 | grep -i "C for AIX Compiler" > /dev/null 2>&1 && $CC -c -qlanglvl=ansi -qinfo=all conftest.c > /dev/null 2>&1 && test -f conftest.o; then if test -z "$ansi"; then vl_cv_prog_cc_warnings="-qsrcmsg -qinfo=all:noppt:noppc:noobs:nocnd:nouni:nocnv" else vl_cv_prog_cc_warnings="-qsrcmsg -qinfo=all:noppt:noppc:noobs:nocnd:nouni:nocnv -qlanglvl=ansi" fi dnl IRIX C compiler elif $CC -version 2>&1 | grep -i "MIPSpro Compilers" > /dev/null 2>&1 && $CC -c -fullwarn -ansi -ansiE conftest.c > /dev/null 2>&1 && test -f conftest.o; then if test -z "$ansi"; then vl_cv_prog_cc_warnings="-fullwarn" else vl_cv_prog_cc_warnings="-fullwarn -ansi -ansiE" fi dnl HP-UX C compiler elif what $CC 2>&1 | grep -i "HP C Compiler" > /dev/null 2>&1 && $CC -c -Aa +w1 conftest.c > /dev/null 2>&1 && test -f conftest.o; then if test -z "$ansi"; then vl_cv_prog_cc_warnings="+w1" else vl_cv_prog_cc_warnings="+w1 -Aa" fi dnl The NEC SX-5 (Super-UX 10) C compiler elif $CC -V 2>&1 | grep "/SX" > /dev/null 2>&1 && $CC -c -pvctl[,]fullmsg -Xc conftest.c > /dev/null 2>&1 && test -f conftest.o; then if test -z "$ansi"; then vl_cv_prog_cc_warnings="-pvctl[,]fullmsg" else vl_cv_prog_cc_warnings="-pvctl[,]fullmsg -Xc" fi dnl The Cray C compiler (Unicos) elif $CC -V 2>&1 | grep -i "Cray" > /dev/null 2>&1 && $CC -c -h msglevel 2 conftest.c > /dev/null 2>&1 && test -f conftest.o; then if test -z "$ansi"; then vl_cv_prog_cc_warnings="-h msglevel 2" else vl_cv_prog_cc_warnings="-h msglevel 2 -h conform" fi fi rm -f conftest.* fi if test -n "$vl_cv_prog_cc_warnings"; then CFLAGS="$CFLAGS $vl_cv_prog_cc_warnings" else vl_cv_prog_cc_warnings="unknown" fi ]) fi ])dnl