re PR tree-optimization/63747 (icf mis-compares switch gimple)

[gcc.git] / configure

diff --git a/configure b/configure
index 149acf6596b61a6e7bb9e44f0f1f87d86c2186c8..d0c760bba49507820511e710a9244975559e1570 100755 (executable)
--- a/configure
+++ b/configure
@@ -642,8 +642,8 @@ CXXFLAGS_FOR_TARGET
 CFLAGS_FOR_TARGET
 DEBUG_PREFIX_CFLAGS_FOR_TARGET
 SYSROOT_CFLAGS_FOR_TARGET
-stage1_languages
 extra_host_libiberty_configure_flags
+stage1_languages
 extra_linker_plugin_flags
 extra_linker_plugin_configure_flags
 clooginc
@@ -3413,7 +3413,8 @@ case "${target}" in
     ;;
 esac
 
-# Disable the go frontend on systems where it is known to not work.
+# Disable the go frontend on systems where it is known to not work. Please keep
+# this in sync with contrib/config-list.mk.
 case "${target}" in
 *-*-darwin* | *-*-cygwin* | *-*-mingw* | *-*-aix*)
     unsupported_languages="$unsupported_languages go"
@@ -6259,7 +6260,6 @@ if test -d ${srcdir}/gcc; then
   new_enable_languages=,c,
 
   # If LTO is enabled, add the LTO front end.
-  extra_host_libiberty_configure_flags=
   if test "$enable_lto" = "yes" ; then
     case ,${enable_languages}, in
       *,lto,*) ;;
@@ -6267,11 +6267,9 @@ if test -d ${srcdir}/gcc; then
     esac
     if test "${build_lto_plugin}" = "yes" ; then
       configdirs="$configdirs lto-plugin"
-      extra_host_libiberty_configure_flags=--enable-shared
     fi
   fi
 
-
   missing_languages=`echo ",$enable_languages," | sed -e s/,all,/,/ -e s/,c,/,/ `
   potential_languages=,c,
 
@@ -6584,6 +6582,17 @@ then
   esac
 fi
 
+# Sometimes we have special requirements for the host libiberty.
+extra_host_libiberty_configure_flags=
+case " $configdirs " in
+  *" lto-plugin "* | *" libcc1 "*)
+    # When these are to be built as shared libraries, the same applies to
+    # libiberty.
+    extra_host_libiberty_configure_flags=--enable-shared
+    ;;
+esac
+
+
 # Produce a warning message for the subdirs we can't configure.
 # This isn't especially interesting in the Cygnus tree, but in the individual
 # FSF releases, it's important to let people know when their machine isn't