diff options
Diffstat (limited to 'libiberty/configure')
| -rwxr-xr-x | libiberty/configure | 46 |
1 files changed, 27 insertions, 19 deletions
diff --git a/libiberty/configure b/libiberty/configure index c745d8b..d350af7 100755 --- a/libiberty/configure +++ b/libiberty/configure @@ -2953,22 +2953,33 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu ac_c_preproc_warn_flag=yes -# Warn C++ incompatibilities if supported. -echo "$as_me:$LINENO: checking whether ${CC} accepts -Wc++-compat" >&5 -echo $ECHO_N "checking whether ${CC} accepts -Wc++-compat... $ECHO_C" >&6 -if test "${ac_cv_prog_cc_w_cxx_compat+set}" = set; then +ac_libiberty_warn_cflags= +save_CFLAGS="$CFLAGS" +for option in -W -Wall -pedantic -Wwrite-strings -Wc++-compat \ + -Wstrict-prototypes; do + as_acx_Woption=`echo "acx_cv_prog_cc_warning_$option" | $as_tr_sh` + + echo "$as_me:$LINENO: checking whether $CC supports $option" >&5 +echo $ECHO_N "checking whether $CC supports $option... $ECHO_C" >&6 +if eval "test \"\${$as_acx_Woption+set}\" = set"; then echo $ECHO_N "(cached) $ECHO_C" >&6 else - save_CFLAGS="$CFLAGS" - CFLAGS="-Wc++-compat" - cat >conftest.$ac_ext <<_ACEOF + CFLAGS="$option" + cat >conftest.$ac_ext <<_ACEOF /* confdefs.h. */ _ACEOF cat confdefs.h >>conftest.$ac_ext cat >>conftest.$ac_ext <<_ACEOF /* end confdefs.h. */ +int +main () +{ + + ; + return 0; +} _ACEOF rm -f conftest.$ac_objext if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5 @@ -2992,28 +3003,25 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5 ac_status=$? echo "$as_me:$LINENO: \$? = $ac_status" >&5 (exit $ac_status); }; }; then - ac_cv_prog_cc_w_cxx_compat=yes + eval "$as_acx_Woption=yes" else echo "$as_me: failed program was:" >&5 sed 's/^/| /' conftest.$ac_ext >&5 -ac_cv_prog_cc_w_cxx_compat=no +eval "$as_acx_Woption=no" fi rm -f conftest.err conftest.$ac_objext conftest.$ac_ext - CFLAGS="$save_CFLAGS" fi -echo "$as_me:$LINENO: result: $ac_cv_prog_cc_w_cxx_compat" >&5 -echo "${ECHO_T}$ac_cv_prog_cc_w_cxx_compat" >&6 - - -if test x$GCC = xyes; then - ac_libiberty_warn_cflags='-W -Wall -pedantic -Wwrite-strings -Wstrict-prototypes' -fi -if test $ac_cv_prog_cc_w_cxx_compat = yes ; then - ac_libiberty_warn_cflags="${ac_libiberty_warn_cflags} -Wc++-compat" +echo "$as_me:$LINENO: result: `eval echo '${'$as_acx_Woption'}'`" >&5 +echo "${ECHO_T}`eval echo '${'$as_acx_Woption'}'`" >&6 + if test `eval echo '${'$as_acx_Woption'}'` = yes; then + ac_libiberty_warn_cflags="$ac_libiberty_warn_cflags${ac_libiberty_warn_cflags:+ }$option" fi + done +CFLAGS="$save_CFLAGS" + if test "x$CC" != xcc; then echo "$as_me:$LINENO: checking whether $CC and cc understand -c and -o together" >&5 |