* ipa-reference.c (check_call): Noreturn notrhow calls do not write

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

diff --git a/libgcc/configure.ac b/libgcc/configure.ac
index 1238d74..e735019 100644 (file)
--- a/libgcc/configure.ac
+++ b/libgcc/configure.ac
@@ -6,7 +6,7 @@ sinclude(../config/acx.m4)
 sinclude(../config/no-executables.m4)
 sinclude(../config/override.m4)
 
-AC_PREREQ(2.59)
+AC_PREREQ(2.64)
 AC_INIT([GNU C Runtime Library], 1.0,,[libgcc])
 AC_CONFIG_SRCDIR([static-object.mk])
 
@@ -78,6 +78,21 @@ else
 fi)
 AC_SUBST(slibdir)
 
+# Command-line options.
+# Very limited version of AC_MAINTAINER_MODE.
+AC_ARG_ENABLE([maintainer-mode],
+  [AC_HELP_STRING([--enable-maintainer-mode],
+                 [enable make rules and dependencies not useful (and
+                  sometimes confusing) to the casual installer])],
+  [case ${enable_maintainer_mode} in
+     yes) MAINT='' ;;
+     no) MAINT='#' ;;
+     *) AC_MSG_ERROR([--enable-maintainer-mode must be yes or no]) ;;
+   esac
+   maintainer_mode=${enableval}],
+  [MAINT='#'])
+AC_SUBST([MAINT])dnl
+
 AC_PROG_INSTALL
 
 AC_PROG_AWK
@@ -171,6 +186,26 @@ esac
 # Collect host-machine-specific information.
 . ${srcdir}/config.host
 
+# Check if Solaris/x86 linker supports ZERO terminator unwind entries.
+# This is after config.host so we can augment tmake_file.
+# Link with -nostartfiles -nodefaultlibs since neither are present while
+# building libgcc.
+case ${host} in
+i?86-*-solaris2.1[[0-9]]*)
+  cat > conftest.s <<EOF
+       .section        .eh_frame,"a",@unwind
+       .zero   4
+       .section        .jcr,"aw",@progbits
+       .zero   8
+EOF
+  if AC_TRY_COMMAND(${CC-cc} -shared -nostartfiles -nodefaultlibs -o conftest.so conftest.s 1>&AS_MESSAGE_LOG_FD); then
+      # configure expects config files in libgcc/config, so need a relative
+      # path here.
+      tmake_file="${tmake_file} ../../gcc/config/i386/t-crtstuff"
+  fi
+  ;;
+esac
+
 # Check for visibility support.  This is after config.host so that
 # we can check for asm_hidden_op.
 AC_CACHE_CHECK([for __attribute__((visibility("hidden")))],