X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=configure;h=41a73b46ef7e5d1d43b68c854605d67a6aed0b9c;hb=f1faa0e12fd68379420b07ebf2eba43a5be1f2d3;hp=e8a990b01396d4b11de0d639a9be1e337cb656f2;hpb=23d64182d8328c300b368446aad20da9cec91aa3;p=musl

diff --git a/configure b/configure
index e8a990b0..41a73b46 100755
--- a/configure
+++ b/configure
@@ -111,6 +111,7 @@ fi
 CFLAGS_C99FSE=
 CFLAGS_AUTO=
 CFLAGS_MEMOPS=
+CFLAGS_NOSSP=
 LDFLAGS_AUTO=
 OPTIMIZE_GLOBS=
 prefix=/usr/local/musl
@@ -123,8 +124,9 @@ target=
 optimize=auto
 debug=no
 warnings=no
-shared=yes
+shared=auto
 static=yes
+wrapper=auto
 
 for arg ; do
 case "$arg" in
@@ -189,24 +191,43 @@ trycc ${CROSS_COMPILE}cc
 printf "%s\n" "$CC"
 test -n "$CC" || { echo "$0: cannot find a C compiler" ; exit 1 ; }
 
+printf "checking whether C compiler works... "
+echo "typedef int x;" > "$tmpc"
+if output=$($CC $CPPFLAGS $CFLAGS -c -o /dev/null "$tmpc" 2>&1) ; then
+printf "yes\n"
+else
+printf "no; compiler output follows:\n%s\n" "$output"
+exit 1
+fi
+
 #
-# Only build musl-gcc wrapper if toolchain does not already target musl
+# Need to know if the compiler is gcc to decide whether to build the
+# musl-gcc wrapper, and for critical bug detection in some gcc versions.
 #
-if test -z "$wrapper" ; then
 printf "checking whether compiler is gcc... "
-if fnmatch '*gcc\ version*' "$($CC -v 2>&1)" ; then
-echo yes
+if fnmatch '*gcc\ version*' "$(LC_ALL=C $CC -v 2>&1)" ; then
+cc_is_gcc=yes
+else
+cc_is_gcc=no
+fi
+echo "$cc_is_gcc"
+
+#
+# Only build musl-gcc wrapper if toolchain does not already target musl
+#
+if test "$wrapper" = auto ; then
 printf "checking whether to build musl-gcc wrapper... "
+if test "$cc_is_gcc" = yes ; then
 wrapper=yes
 while read line ; do
 case "$line" in */ld-musl-*) wrapper=no ;; esac
 done <<EOF
 $($CC -dumpspecs)
 EOF
-echo $wrapper
 else
-echo no
+wrapper=no
 fi
+echo "$wrapper"
 fi
 
 
@@ -225,11 +246,13 @@ case "$target" in
 # Catch these early to simplify matching for 32-bit archs
 mips64*|powerpc64*) fail "$0: unsupported target \"$target\"" ;;
 arm*) ARCH=arm ;;
+aarch64*) ARCH=aarch64 ;;
 i?86*) ARCH=i386 ;;
 x86_64-x32*|x32*|x86_64*x32) ARCH=x32 ;;
 x86_64*) ARCH=x86_64 ;;
 mips*) ARCH=mips ;;
 microblaze*) ARCH=microblaze ;;
+or1k*) ARCH=or1k ;;
 powerpc*) ARCH=powerpc ;;
 sh[1-9bel-]*|sh|superh*) ARCH=sh ;;
 unknown) fail "$0: unable to detect target arch; try $0 --target=..." ;;
@@ -268,6 +291,13 @@ printf "yes\n"
 CFLAGS_C99FSE="$CFLAGS_C99FSE -D__may_alias__="
 fi
 
+#
+# Check for options to disable stack protector, which needs to be
+# disabled for a few early-bootstrap translation units. If not found,
+# this is not an error; we assume the toolchain does not do ssp.
+#
+tryflag CFLAGS_NOSSP -fno-stack-protector
+
 #
 # Check for options that may be needed to prevent the compiler from
 # generating self-referential versions of memcpy,, memmove, memcmp,
@@ -278,12 +308,9 @@ fi
 tryflag CFLAGS_MEMOPS -fno-tree-loop-distribute-patterns
 
 #
-# If debugging is explicitly enabled, don't auto-enable optimizations
+# Enable debugging if requessted.
 #
-if test "$debug" = yes ; then
-CFLAGS_AUTO=-g
-test "$optimize" = auto && optimize=no
-fi
+test "$debug" = yes && CFLAGS_AUTO=-g
 
 #
 # Possibly add a -O option to CFLAGS and select modules to optimize with
@@ -389,15 +416,17 @@ tryflag CFLAGS_AUTO -Wno-pointer-to-int-cast
 fi
 
 # Some patched GCC builds have these defaults messed up...
-tryflag CFLAGS_AUTO -fno-stack-protector
 tryldflag LDFLAGS_AUTO -Wl,--hash-style=both
 
+test "$shared" = "no" || {
 # Disable dynamic linking if ld is broken and can't do -Bsymbolic-functions
 LDFLAGS_DUMMY=
 tryldflag LDFLAGS_DUMMY -Wl,-Bsymbolic-functions || {
+test "$shared" = "yes" && fail "$0: error: linker cannot build shared library"
 printf "warning: disabling dynamic linking support\n"
 shared=no
 }
+}
 
 # Find compiler runtime library
 test -z "$LIBCC" && tryldflag LIBCC -lgcc && tryldflag LIBCC -lgcc_eh
@@ -419,6 +448,10 @@ trycppif __ARMEB__ "$t" && SUBARCH=${SUBARCH}eb
 trycppif __ARM_PCS_VFP "$t" && SUBARCH=${SUBARCH}hf
 fi
 
+if test "$ARCH" = "aarch64" ; then
+trycppif __AARCH64EB__ "$t" && SUBARCH=${SUBARCH}_be
+fi
+
 if test "$ARCH" = "mips" ; then
 trycppif "_MIPSEL || __MIPSEL || __MIPSEL__" "$t" && SUBARCH=${SUBARCH}el
 trycppif __mips_soft_float "$t" && SUBARCH=${SUBARCH}-sf
@@ -497,9 +530,10 @@ libdir = $libdir
 includedir = $includedir
 syslibdir = $syslibdir
 CC = $CC
-CFLAGS= $CFLAGS_AUTO $CFLAGS
+CFLAGS = $CFLAGS_AUTO $CFLAGS
 CFLAGS_C99FSE = $CFLAGS_C99FSE
 CFLAGS_MEMOPS = $CFLAGS_MEMOPS
+CFLAGS_NOSSP = $CFLAGS_NOSSP
 CPPFLAGS = $CPPFLAGS
 LDFLAGS = $LDFLAGS_AUTO $LDFLAGS
 CROSS_COMPILE = $CROSS_COMPILE