Re: Run more ld tests when not native

[Alan Modra <amodra at gmail dot com>]

On Mon, Jan 02, 2017 at 05:04:54PM +0100, Christophe Lyon wrote:
> Running /XXX/ld/testsuite/ld-elf/elf.exp ...
> ERROR: arm-linux-gnueabi-cc does not exist
> 
> So it looks like these tests require a C compiler, rather than being
> executed natively?

Yes.  Removing the [isnative] check requires that we test for a C
compiler.  I'm looking into the other testsuite fails, which didn't
show up with an older compiler..

	* testsuite/ld-elf/elf.exp: Check that $CC exists before C tests.
	* testsuite/ld-pie/pie.exp: Likewise.
	* testsuite/ld-plugin/lto.exp: Likewise.

diff --git a/ld/testsuite/ld-elf/elf.exp b/ld/testsuite/ld-elf/elf.exp
index a5244e4..9a26a7c 100644
--- a/ld/testsuite/ld-elf/elf.exp
+++ b/ld/testsuite/ld-elf/elf.exp
@@ -221,6 +221,11 @@ if { [istarget *-*-*linux*]
 
 set LDFLAGS $old_ldflags
 
+# Check to see if the C compiler works
+if { [which $CC] == 0 } {
+    return
+}
+
 if [check_gc_sections_available] {
     run_cc_link_tests {
 	{"PR ld/13195" "-Wl,--gc-sections" ""
diff --git a/ld/testsuite/ld-pie/pie.exp b/ld/testsuite/ld-pie/pie.exp
index e9d1162..44d9f09 100644
--- a/ld/testsuite/ld-pie/pie.exp
+++ b/ld/testsuite/ld-pie/pie.exp
@@ -25,6 +25,11 @@ if { ![istarget *-*-linux*]
     return
 }
 
+# Check to see if the C compiler works
+if { [which $CC] == 0 } {
+    return
+}
+
 # Check if -pie is supported or not.
 send_log "$CC -fpie -pie $srcdir/$subdir/pie.c -o tmpdir/pie"
 catch "exec $CC -fpie -pie $srcdir/$subdir/pie.c -o tmpdir/pie" exec_output
diff --git a/ld/testsuite/ld-plugin/lto.exp b/ld/testsuite/ld-plugin/lto.exp
index bfc1b1cfd..b13c540 100644
--- a/ld/testsuite/ld-plugin/lto.exp
+++ b/ld/testsuite/ld-plugin/lto.exp
@@ -18,6 +18,11 @@
 # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
 # MA 02110-1301, USA.
 
+# Check to see if the C compiler works
+if { [which $CC] == 0 } {
+    return
+}
+
 # These tests require plugin and LTO.
 if { ![check_plugin_api_available]
      || ![check_lto_available] } {

-- 
Alan Modra
Australia Development Lab, IBM