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[deliverable/binutils-gdb.git] / ld / configure.in

diff --git a/ld/configure.in b/ld/configure.in
index 28665eac25c25fc5b48275bfcc05ff81ebc57029..fc96e6feb58344aefc74a1e2ada6438351aa8b70 100644 (file)
--- a/ld/configure.in
+++ b/ld/configure.in
@@ -66,26 +66,48 @@ AC_SUBST(use_sysroot)
 AC_SUBST(TARGET_SYSTEM_ROOT)
 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
 
-build_warnings="-W -Wall -Wstrict-prototypes -Wmissing-prototypes"
+dnl FIXME: The following is bfd/warning.m4 contents expanded
+dnl When converting to current autotools, please replace with
+dnl AM_BINUTILS_WARNINGS
+WARN_CFLAGS="-W -Wall -Wstrict-prototypes -Wmissing-prototypes"
+
+AC_ARG_ENABLE(werror,
+  [  --enable-werror    treat compile warnings as errors],
+  [case "${enableval}" in
+     yes | y) ERROR_ON_WARNING="yes" ;;
+     no | n)  ERROR_ON_WARNING="no" ;;
+     *) AC_MSG_ERROR(bad value ${enableval} for --enable-werror) ;;
+   esac])
+
+# Enable -Werror by default when using gcc
+if test "${GCC}" = yes -a -z "${ERROR_ON_WARNING}" ; then
+    ERROR_ON_WARNING=yes
+fi
+
+NO_WERROR=
+if test "${ERROR_ON_WARNING}" = yes ; then
+    WARN_CFLAGS="$WARN_CFLAGS -Werror"
+    NO_WERROR="-Wno-error"
+fi
+                  
 AC_ARG_ENABLE(build-warnings,
-[  --enable-build-warnings enable build-time compiler warnings if gcc is used],
+[  --enable-build-warnings Enable build-time compiler warnings],
 [case "${enableval}" in
   yes) ;;
-  no)  build_warnings="-w";;
+  no)  WARN_CFLAGS="-w";;
   ,*)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
-        build_warnings="${build_warnings} ${t}";;
+        WARN_CFLAGS="${WARN_CFLAGS} ${t}";;
   *,)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
-        build_warnings="${t} ${build_warnings}";;
-  *)    build_warnings=`echo "${enableval}" | sed -e "s/,/ /g"`;;
-esac
-if test x"$silent" != x"yes" && test x"$build_warnings" != x""; then
-  echo "Setting warning flags = $build_warnings" 6>&1
-fi])dnl
-WARN_CFLAGS=""
-if test "x${build_warnings}" != x -a "x$GCC" = xyes ; then
-    WARN_CFLAGS="${build_warnings}"
+        WARN_CFLAGS="${t} ${WARN_CFLAGS}";;
+  *)    WARN_CFLAGS=`echo "${enableval}" | sed -e "s/,/ /g"`;;
+esac])
+
+if test x"$silent" != x"yes" && test x"$WARN_CFLAGS" != x""; then
+  echo "Setting warning flags = $WARN_CFLAGS" 6>&1
 fi
+
 AC_SUBST(WARN_CFLAGS)
+AC_SUBST(NO_WERROR)
 
 AM_CONFIG_HEADER(config.h:config.in)
 
@@ -119,9 +141,19 @@ AC_SUBST(HOSTING_LIBS)
 AC_SUBST(NATIVE_LIB_DIRS)
 
 AC_CHECK_HEADERS(string.h strings.h stdlib.h unistd.h)
-AC_CHECK_FUNCS(sbrk realpath)
+AC_CHECK_FUNCS(sbrk realpath glob)
 AC_HEADER_DIRENT
 
+AC_MSG_CHECKING(for a known getopt prototype in unistd.h)
+AC_CACHE_VAL(ld_cv_decl_getopt_unistd_h,
+[AC_TRY_COMPILE([#include <unistd.h>], [extern int getopt (int, char *const*, const char *);],
+ld_cv_decl_getopt_unistd_h=yes, ld_cv_decl_getopt_unistd_h=no)])
+AC_MSG_RESULT($ld_cv_decl_getopt_unistd_h)
+if test $ld_cv_decl_getopt_unistd_h = yes; then
+  AC_DEFINE([HAVE_DECL_GETOPT], 1,
+           [Is the prototype for getopt in <unistd.h> in the expected format?])
+fi
+       
 BFD_BINARY_FOPEN
 
 BFD_NEED_DECLARATION(strstr)