fix search past the end of haystack in memmem

[musl] / configure

diff --git a/configure b/configure
index 572ea64..eb72a1e 100755 (executable)
--- a/configure
+++ b/configure
@@ -222,14 +222,16 @@ printf "%s\n" "$target"
 # Convert to just ARCH
 #
 case "$target" in
+# Catch these early to simplify matching for 32-bit archs
+mips64*|powerpc64*) fail "$0: unsupported target \"$target\"" ;;
 arm*) ARCH=arm ;;
 i?86*) ARCH=i386 ;;
-x86_64-x32*|x32*) ARCH=x32 ;;
+x86_64-x32*|x32*|x86_64*x32) ARCH=x32 ;;
 x86_64*) ARCH=x86_64 ;;
-mips-*|mipsel-*) ARCH=mips ;;
-microblaze-*) ARCH=microblaze ;;
-powerpc-*) ARCH=powerpc ;;
-sh-*) ARCH=sh ;;
+mips*) ARCH=mips ;;
+microblaze*) ARCH=microblaze ;;
+powerpc*) ARCH=powerpc ;;
+sh[1-9bel-]*|sh|superh*) ARCH=sh ;;
 unknown) fail "$0: unable to detect target arch; try $0 --target=..." ;;
 *) fail "$0: unknown or unsupported target \"$target\"" ;;
 esac
@@ -408,6 +410,10 @@ printf "using compiler runtime libraries: %s\n" "$LIBCC"
 SUBARCH=
 t="$CFLAGS_C99FSE $CPPFLAGS $CFLAGS_AUTO $CFLAGS"
 
+if test "$ARCH" = "x86_64" ; then
+trycppif __ILP32__ "$t" && ARCH=x32
+fi
+
 if test "$ARCH" = "arm" ; then
 trycppif __ARMEB__ "$t" && SUBARCH=${SUBARCH}eb
 trycppif __ARM_PCS_VFP "$t" && SUBARCH=${SUBARCH}hf
@@ -423,12 +429,12 @@ test "$ARCH" = "microblaze" && trycppif __MICROBLAZEEL__ "$t" \
 
 if test "$ARCH" = "sh" ; then
 trycppif __BIG_ENDIAN__ "$t" && SUBARCH=${SUBARCH}eb
-if trycppif __SH_FPU_ANY__ ; then
+if trycppif __SH_FPU_ANY__ "$t" ; then
 # Some sh configurations are broken and replace double with float
 # rather than using softfloat when the fpu is present but only
 # supports single precision. Reject them.
 printf "checking whether compiler's double type is IEEE double... "
-echo 'typedef char dblcheck[(int)sizeof(double)-5];' >> "$tmpc"
+echo 'typedef char dblcheck[(int)sizeof(double)-5];' > "$tmpc"
 if $CC $CFLAGS_C99FSE $CPPFLAGS $CFLAGS -c -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
 printf "yes\n"
 else