X-Git-Url: http://nsz.repo.hu/git/?p=musl;a=blobdiff_plain;f=configure;h=96f93b24cc705bde21bd3308bbeb0efacab09d5c;hp=cee817e4dbbea4a3ef6e1467cbfe6b528cc7026a;hb=1a70198b3e5a7866bf4c62d090d8a8e28b12521a;hpb=3d9e3a309f794faf0df53c00b15d406f14931938;ds=sidebyside

diff --git a/configure b/configure
index cee817e4..96f93b24 100755
--- a/configure
+++ b/configure
@@ -145,7 +145,7 @@ i=0
 set -C
 while : ; do i=$(($i+1))
 tmpc="./conf$$-$PPID-$i.c"
-2>/dev/null > "$tmpc" && break
+2>|/dev/null > "$tmpc" && break
 test "$i" -gt 50 && fail "$0: cannot create temporary file $tmpc"
 done
 set +C
@@ -199,6 +199,7 @@ i?86*) ARCH=i386 ;;
 x86_64*) ARCH=x86_64 ;;
 mips-*|mipsel-*) ARCH=mips ;;
 microblaze-*) ARCH=microblaze ;;
+powerpc-*) ARCH=powerpc ;;
 unknown) fail "$0: unable to detect target arch; try $0 --target=..." ;;
 *) fail "$0: unknown or unsupported target \"$target\"" ;;
 esac
@@ -269,9 +270,19 @@ fnmatch '-march=*|*\ -march=*' "$CFLAGS" || tryldflag CFLAGS_AUTO -march=i486
 fnmatch '-mtune=*|*\ -mtune=*' "$CFLAGS" || tryldflag CFLAGS_AUTO -mtune=generic
 fi
 
+#
+# Even with -std=c99, gcc accepts some constructs which are constraint
+# violations. We want to treat these as errors regardless of whether
+# other purely stylistic warnings are enabled -- especially implicit
+# function declarations, which are a dangerous programming error.
+#
+tryflag CFLAGS_AUTO -Werror=implicit-function-declaration
+tryflag CFLAGS_AUTO -Werror=implicit-int
+tryflag CFLAGS_AUTO -Werror=pointer-sign
+tryflag CFLAGS_AUTO -Werror=pointer-arith
+
 if test "x$warnings" = xyes ; then
 tryflag CFLAGS_AUTO -Wall
-tryflag CFLAGS_AUTO -Wpointer-arith
 tryflag CFLAGS_AUTO -Wcast-align
 tryflag CFLAGS_AUTO -Wno-parentheses
 tryflag CFLAGS_AUTO -Wno-uninitialized