X-Git-Url: http://nsz.repo.hu/git/?p=musl;a=blobdiff_plain;f=configure;h=19c241e634b633cefc339e4efaa40420624923de;hp=4e3931c1c2b49236340e9d31ed348dc88b7b8b9a;hb=3d99266b5e8fc6374a9d930f3ae9d444ffebb11e;hpb=b439c051c7eee4eb4b93fc382f993aa6305ce530

diff --git a/configure b/configure
index 4e3931c1..19c241e6 100755
--- a/configure
+++ b/configure
@@ -34,6 +34,7 @@ Some influential environment variables:
   CC                      C compiler command [detected]
   CFLAGS                  C compiler flags [-Os -pipe ...]
   CROSS_COMPILE           prefix for cross compiler and tools [none]
+  LIBCC                   compiler runtime library [detected]
 
 Use these variables to override the choices made by configure.
 
@@ -57,7 +58,7 @@ else eval "fnmatch '*/' \"\${$1}\"" && eval "$1=\${$1%/}" ; fi
 tryflag () {
 printf "checking whether compiler accepts %s... " "$2"
 echo "typedef int x;" > "$tmpc"
-if "$CC" "$2" -c -o /dev/null "$tmpc" 2>/dev/null ; then
+if $CC "$2" -c -o /dev/null "$tmpc" 2>/dev/null ; then
 printf "yes\n"
 eval "$1=\"\${$1} \$2\""
 eval "$1=\${$1# }"
@@ -71,7 +72,7 @@ fi
 tryldflag () {
 printf "checking whether linker accepts %s... " "$2"
 echo "typedef int x;" > "$tmpc"
-if "$CC" -nostdlib -shared "$2" -o /dev/null "$tmpc" 2>/dev/null ; then
+if $CC -nostdlib -shared "$2" -o /dev/null "$tmpc" 2>/dev/null ; then
 printf "yes\n"
 eval "$1=\"\${$1} \$2\""
 eval "$1=\${$1# }"
@@ -128,6 +129,7 @@ CFLAGS=*) CFLAGS=${arg#*=} ;;
 CPPFLAGS=*) CPPFLAGS=${arg#*=} ;;
 LDFLAGS=*) LDFLAGS=${arg#*=} ;;
 CROSS_COMPILE=*) CROSS_COMPILE=${arg#*=} ;;
+LIBCC=*) LIBCC=${arg#*=} ;;
 *=*) ;;
 *) target=$arg ;;
 esac
@@ -168,7 +170,7 @@ test -n "$CC" || { echo "$0: cannot find a C compiler" ; exit 1 ; }
 #
 if test -z "$wrapper" ; then
 printf "checking whether compiler is gcc... "
-if fnmatch '*gcc\ version*' "$("$CC" -v 2>&1)" ; then
+if fnmatch '*gcc\ version*' "$($CC -v 2>&1)" ; then
 echo yes
 printf "checking whether to build musl-gcc wrapper... "
 wrapper=yes
@@ -189,7 +191,7 @@ fi
 # Find the target architecture
 #
 printf "checking target system type... "
-test -n "$target" || target=$("$CC" -dumpmachine 2>/dev/null) || target=unknown
+test -n "$target" || target=$($CC -dumpmachine 2>/dev/null) || target=unknown
 printf "%s\n" "$target"
 
 #
@@ -200,6 +202,7 @@ arm*) ARCH=arm ;;
 i?86*) ARCH=i386 ;;
 x86_64*) ARCH=x86_64 ;;
 mips-*|mipsel-*) ARCH=mips ;;
+microblaze-*) ARCH=microblaze ;;
 unknown) fail "$0: unable to detect target arch; try $0 --target=..." ;;
 *) fail "$0: unknown or unsupported target \"$target\"" ;;
 esac
@@ -244,6 +247,13 @@ fi
 tryflag CFLAGS_AUTO -fno-unwind-tables
 tryflag CFLAGS_AUTO -fno-asynchronous-unwind-tables
 
+#
+# The GNU toolchain defaults to assuming unmarked files need an
+# executable stack, potentially exposing vulnerabilities in programs
+# linked with such object files. Fix this.
+#
+tryflag CFLAGS_AUTO -Wa,--noexecstack
+
 #
 # Some optimization levels add bloated alignment that hurt performance
 #
@@ -259,8 +269,8 @@ tryflag CFLAGS_AUTO -falign-jumps=1
 # work anyway (issues with atomic ops).
 #
 if test "$ARCH" = "i386" ; then
-fnmatch '-march=*|*\ -march=*' "$CFLAGS" || tryflag CFLAGS_AUTO -march=i486
-fnmatch '-mtune=*|*\ -mtune=*' "$CFLAGS" || tryflag CFLAGS_AUTO -mtune=generic
+fnmatch '-march=*|*\ -march=*' "$CFLAGS" || tryldflag CFLAGS_AUTO -march=i486
+fnmatch '-mtune=*|*\ -mtune=*' "$CFLAGS" || tryldflag CFLAGS_AUTO -mtune=generic
 fi
 
 if test "x$warnings" = xyes ; then
@@ -286,6 +296,11 @@ printf "warning: disabling dynamic linking support\n"
 shared=no
 }
 
+# Find compiler runtime library
+test -z "$LIBCC" && tryldflag LIBCC -lgcc && tryldflag LIBCC -lgcc_eh
+test -z "$LIBCC" && tryldflag LIBCC -lcompiler_rt
+test -z "$LIBCC" && tryldflag LIBCC -lpcc
+printf "using compiler runtime libraries: %s\n" "$LIBCC"
 
 
 printf "creating config.mak... "
@@ -309,6 +324,7 @@ CFLAGS_C99FSE = $CFLAGS_C99FSE
 CPPFLAGS = $CPPFLAGS
 LDFLAGS = $LDFLAGS_AUTO $LDFLAGS
 CROSS_COMPILE = $CROSS_COMPILE
+LIBCC = $LIBCC
 EOF
 test "x$static" = xno && echo "STATIC_LIBS ="
 test "x$shared" = xno && echo "SHARED_LIBS ="