[m-rev.] diff: fix Mac OS problem with libgcc.a

[Fergus Henderson]

Estimated hours taken: 0.5

configure.in:
	Fix a problem that caused some spurious error messages on Mac OS X:
	only include libgcc.a in SHARED_LIBS if gcc is present.

Workspace: /home/hg/fjh/mercury
Index: configure.in
===================================================================
RCS file: /home/mercury1/repository/mercury/configure.in,v
retrieving revision 1.253
diff -u -d -r1.253 configure.in
--- configure.in	2001/04/10 15:37:35	1.253
+++ configure.in	2001/04/16 09:21:22
@@ -2233,8 +2233,14 @@
 # see Mmake.common.in for documentation on the meaning of these variables
 LINK_SHARED_OBJ="$CC -shared"
 LINK_SHARED_OBJ_SH="$CC -shared"
-SHARED_LIBS='`gcc -print-libgcc-file-name` $(MATH_LIB) -lc'
-SHARED_LIBS_SH='`gcc -print-libgcc-file-name` $MATH_LIB -lc'
+AC_PATH_PROG(GCC,gcc)
+if test "$GCC" != ""; then
+	SHARED_LIBS='`gcc -print-libgcc-file-name` $(MATH_LIB) -lc'
+	SHARED_LIBS_SH='`gcc -print-libgcc-file-name` $MATH_LIB -lc'
+else
+	SHARED_LIBS='$(MATH_LIB) -lc'
+	SHARED_LIBS_SH='$MATH_LIB -lc'
+fi
 EXE_RPATH_OPT="-Wl,-rpath,"
 EXE_RPATH_SEP=" -Wl,-rpath,"
 SHLIB_RPATH_OPT="-Wl,-rpath,"

-- 
Fergus Henderson <fjh at cs.mu.oz.au>  |  "I have always known that the pursuit
The University of Melbourne         |  of excellence is a lethal habit"
WWW: <http://www.cs.mu.oz.au/~fjh>  |     -- the last words of T. S. Garp.
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