* configure.in configure: Check if host has libm. Make sure we

are using gcc when using the -export-dynamic option.  Fixes a
	problem with building under Solaris/SunPro cc.

gdb/ChangeLog

@@ -1,3 +1,9 @@
+Tue Jan 21 17:01:20 1997  Stu Grossman  (grossman@lisa.cygnus.com)
+
+	* configure.in configure:  Check if host has libm.  Make sure we
+	are using gcc when using the -export-dynamic option.  Fixes a
+	problem with building under Solaris/SunPro cc.
+
 Mon Jan 20 13:52:13 1997  Mark Alexander  <marka@cygnus.com>
 
 	* config/mips/{embed,embed64,embedl,embedl64}.mt:

gdb/configure.in

@@ -79,6 +79,9 @@ if test $gdb_cv_have_fpregset_t = yes; then
   AC_DEFINE(HAVE_FPREGSET_T)
 fi
 
+dnl See if host has libm.  This is usually needed by simulators.
+AC_CHECK_LIB(m, main)
+
 dnl See if compiler supports "long long" type.
 
 AC_MSG_CHECKING(for long long support in compiler)
@@ -175,7 +178,9 @@ if test ${build} = ${host} -a ${host} = ${target} ; then
 			AC_MSG_RESULT(yes)
 			AC_DEFINE(HAVE_THREAD_DB_LIB)
 			CONFIG_OBS="${CONFIG_OBS} sol-thread.o"
-			CONFIG_LDFLAGS="${CONFIG_LDFLAGS} -Xlinker -export-dynamic"
+			if test "$GCC" = "yes" ; then
+				CONFIG_LDFLAGS="${CONFIG_LDFLAGS} -Xlinker -export-dynamic"
+			fi
 		else
 			AC_MSG_RESULT(no)
 		fi