PR libstdc++/51504

[pf3gnuchains/gcc-fork.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index 0a30880..57d5382 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -493,15 +493,20 @@ if test x$enable_libgomp = x ; then
     esac
 fi
 
-# Disable libitm on unsupported hosted systems.
-if test x$enable_libitm = x; then
-   AC_MSG_CHECKING([for libitm support])
-   if (. ${srcdir}/libitm/configure.tgt; test -n "$UNSUPPORTED"); then
-       AC_MSG_RESULT([no])
-       noconfigdirs="$noconfigdirs target-libitm"
-   else
-       AC_MSG_RESULT([yes])
-   fi
+# Disable libitm on unsupported systems.
+if test -d ${srcdir}/libitm; then
+    if test x$enable_libitm = x; then
+       AC_MSG_CHECKING([for libitm support])
+       if (srcdir=${srcdir}/libitm; \
+               . ${srcdir}/configure.tgt; \
+               test -n "$UNSUPPORTED")
+       then
+           AC_MSG_RESULT([no])
+           noconfigdirs="$noconfigdirs target-libitm"
+       else
+           AC_MSG_RESULT([yes])
+       fi
+    fi
 fi
 
 # Disable libssp for some systems.
@@ -513,6 +518,12 @@ case "${target}" in
   powerpc-*-aix* | rs6000-*-aix*)
     noconfigdirs="$noconfigdirs target-libssp"
     ;;
+  rl78-*-*)
+    # libssp uses a misaligned load to trigger a fault, but the RL78
+    # doesn't fault for those - instead, it gives a build-time error
+    # for explicit misaligned loads.
+    noconfigdirs="$noconfigdirs target-libssp"
+    ;;
 esac
 
 # Disable libstdc++-v3 for some systems.
@@ -1971,6 +1982,14 @@ case ,${enable_languages},:${enable_objc_gc} in
     ;;
 esac
 
+# Disable libitm if we're not building C++
+case ,${enable_languages}, in
+  *,c++,*) ;;
+  *)
+    noconfigdirs="$noconfigdirs target-libitm"
+    ;;
+esac
+
 # Remove the entries in $skipdirs and $noconfigdirs from $configdirs,
 # $build_configdirs and $target_configdirs.
 # If we have the source for $noconfigdirs entries, add them to $notsupp.
@@ -2286,10 +2305,6 @@ case "${target}" in
     extra_arflags_for_target=" -X32_64"
     extra_nmflags_for_target=" -B -X32_64"
     ;;
-  *-*-darwin[[3-9]]*)
-    # ranlib before Darwin10 requires the -c flag to look at common symbols.
-    extra_ranlibflags_for_target=" -c"
-    ;;
 esac
 
 alphaieee_frag=/dev/null
@@ -3054,6 +3069,7 @@ NCN_STRICT_CHECK_TOOLS(WINDRES, windres)
 NCN_STRICT_CHECK_TOOLS(WINDMC, windmc)
 NCN_STRICT_CHECK_TOOLS(OBJCOPY, objcopy)
 NCN_STRICT_CHECK_TOOLS(OBJDUMP, objdump)
+NCN_STRICT_CHECK_TOOLS(READELF, readelf)
 AC_SUBST(CC)
 AC_SUBST(CXX)
 AC_SUBST(CFLAGS)
@@ -3087,6 +3103,7 @@ ACX_CHECK_INSTALLED_TARGET_TOOL(LIPO_FOR_TARGET, lipo)
 ACX_CHECK_INSTALLED_TARGET_TOOL(NM_FOR_TARGET, nm)
 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJDUMP_FOR_TARGET, objdump)
 ACX_CHECK_INSTALLED_TARGET_TOOL(RANLIB_FOR_TARGET, ranlib)
+ACX_CHECK_INSTALLED_TARGET_TOOL(READELF_FOR_TARGET, readelf)
 ACX_CHECK_INSTALLED_TARGET_TOOL(STRIP_FOR_TARGET, strip)
 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDRES_FOR_TARGET, windres)
 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDMC_FOR_TARGET, windmc)
@@ -3116,6 +3133,7 @@ GCC_TARGET_TOOL(lipo, LIPO_FOR_TARGET, LIPO)
 GCC_TARGET_TOOL(nm, NM_FOR_TARGET, NM, [binutils/nm-new])
 GCC_TARGET_TOOL(objdump, OBJDUMP_FOR_TARGET, OBJDUMP, [binutils/objdump])
 GCC_TARGET_TOOL(ranlib, RANLIB_FOR_TARGET, RANLIB, [binutils/ranlib])
+GCC_TARGET_TOOL(readelf, READELF_FOR_TARGET, READELF, [binutils/readelf])
 GCC_TARGET_TOOL(strip, STRIP_FOR_TARGET, STRIP, [binutils/strip-new])
 GCC_TARGET_TOOL(windres, WINDRES_FOR_TARGET, WINDRES, [binutils/windres])
 GCC_TARGET_TOOL(windmc, WINDMC_FOR_TARGET, WINDMC, [binutils/windmc])