Extracted the libgcc test from the main testsuite in preparation for...

Extracted the libgcc test from the main testsuite in preparation for integrating it with AC_MODULE_INIT.

Rev: src/aclocal.m4:1.159
Rev: src/configure.in:1.1033

src/aclocal.m4

-dnl $Id: aclocal.m4,v 1.158 2007/07/06 15:54:49 grubba Exp $
+dnl $Id: aclocal.m4,v 1.159 2008/01/10 23:22:59 grubba Exp $
 
 dnl Some compatibility with Autoconf 2.50+. Not complete.
 dnl newer Autoconf calls substr m4_substr
@@ -135,6 +135,43 @@ pushdef([AC_PROG_CC],
   fi
 ])
 
+# Check for libgcc.
+define([PIKE_CHECK_LIBGCC],[
+  if test $ac_cv_prog_gcc = yes; then
+    AC_MSG_CHECKING(for libgcc file name)
+    if test -f "$pike_cv_libgcc_filename"; then :; else
+      # libgcc has gone away probably due to gcc having been upgraded.
+      # Invalidate the entry.
+      unset pike_cv_libgcc_filename
+    fi
+    AC_CACHE_VAL(pike_cv_libgcc_filename,
+    [
+      pike_cv_libgcc_filename="`${CC-cc} $CCSHARED -print-libgcc-file-name`"
+      if test -z "$pike_cv_libgcc_filename"; then
+        pike_cv_libgcc_filename=no
+      else
+         if test -f "$pike_cv_libgcc_filename"; then
+           pic_name=`echo "$pike_cv_libgcc_filename"|sed -e 's/\.a$/_pic.a/'`
+  	 if test -f "$pic_name"; then
+  	   pike_cv_libgcc_filename="$pic_name"
+  	 fi
+         else
+           pike_cv_libgcc_filename=no
+         fi
+      fi
+    ])
+    AC_MSG_RESULT($pike_cv_libgcc_filename)
+    if test x"$pike_cv_libgcc_filename" = xno; then
+      LIBGCC=""
+    else
+      LIBGCC="$pike_cv_libgcc_filename"
+    fi
+  else
+    LIBGCC=""
+  fi
+  AC_SUBST(LIBGCC)
+])
+
 dnl Like AC_PATH_PROG but if $2 isn't found and $RNTANY is set, tries
 dnl to execute "$RNTANY $2 /?" and defines $1 to "$RNTANY $2" if that
 dnl succeeds.
@@ -557,7 +594,7 @@ define([PIKE_RETAIN_VARIABLES],
 
 define([AC_LOW_MODULE_INIT],
 [
-  # $Id: aclocal.m4,v 1.158 2007/07/06 15:54:49 grubba Exp $
+  # $Id: aclocal.m4,v 1.159 2008/01/10 23:22:59 grubba Exp $
 
   MY_AC_PROG_CC
 

src/configure.in

-AC_REVISION("$Id: configure.in,v 1.1032 2007/12/26 23:06:08 grubba Exp $")
+AC_REVISION("$Id: configure.in,v 1.1033 2008/01/10 23:23:16 grubba Exp $")
 AC_INIT(interpret.c)
 AC_CONFIG_HEADER(machine.h)
 
@@ -2327,7 +2327,7 @@ if test "x$PIKE_PATH_TRANSLATE" = "x"; then
     # MinGW system.
     cat <<\EOF
 #!/bin/sh
-# Automatically generated by $Id: configure.in,v 1.1032 2007/12/26 23:06:08 grubba Exp $.
+# Automatically generated by $Id: configure.in,v 1.1033 2008/01/10 23:23:16 grubba Exp $.
 # MinGW-version. Do NOT edit.
 posix_name="`cat`"
 posix_prefix="/"
@@ -2365,7 +2365,7 @@ EOF
     # Native POSIX system.
   cat <<\EOF
 #!/bin/sh
-# Automatically generated by $Id: configure.in,v 1.1032 2007/12/26 23:06:08 grubba Exp $.
+# Automatically generated by $Id: configure.in,v 1.1033 2008/01/10 23:23:16 grubba Exp $.
 # POSIX-version. Do NOT edit.
 cat
 EOF
@@ -2374,7 +2374,7 @@ else
   # rntcl-style
   cat <<\EOF
 #!/bin/sh
-# Automatically generated by $Id: configure.in,v 1.1032 2007/12/26 23:06:08 grubba Exp $.
+# Automatically generated by $Id: configure.in,v 1.1033 2008/01/10 23:23:16 grubba Exp $.
 # RNTCL-version. Do NOT edit.
 sed -e "$PIKE_PATH_TRANSLATE"
 EOF
@@ -7709,39 +7709,7 @@ AC_MSG_RESULT($LINKFORSHARED)
 
 #############################################################################
 
-if test $ac_cv_prog_gcc = yes; then
-  AC_MSG_CHECKING(for libgcc file name)
-  if test -f "$pike_cv_libgcc_filename"; then :; else
-    # libgcc has gone away probably due to gcc having been upgraded.
-    # Invalidate the entry.
-    unset pike_cv_libgcc_filename
-  fi
-  AC_CACHE_VAL(pike_cv_libgcc_filename,
-  [
-    pike_cv_libgcc_filename="`${CC-cc} $CCSHARED -print-libgcc-file-name`"
-    if test -z "$pike_cv_libgcc_filename"; then
-      pike_cv_libgcc_filename=no
-    else
-       if test -f "$pike_cv_libgcc_filename"; then
-         pic_name=`echo "$pike_cv_libgcc_filename"|sed -e 's/\.a$/_pic.a/'`
-	 if test -f "$pic_name"; then
-	   pike_cv_libgcc_filename="$pic_name"
-	 fi
-       else
-         pike_cv_libgcc_filename=no
-       fi
-    fi
-  ])
-  AC_MSG_RESULT($pike_cv_libgcc_filename)
-  if test x"$pike_cv_libgcc_filename" = xno; then
-    LIBGCC=""
-  else
-    LIBGCC="$pike_cv_libgcc_filename"
-  fi
-else
-  LIBGCC=""
-fi
-AC_SUBST(LIBGCC)
+PIKE_CHECK_LIBGCC
 
 # In case we're going to use gcc for linking shared objects,
 # we should use the -static-libgcc flag if it exists.