libgomp/test: Remove a build sysroot fix regression

Fix a problem with commit c8e759b4215b ("libgomp/test: Fix compilation
for build sysroot") that caused a regression in some standalone test
environments where testsuite/libgomp-test-support.exp is used, but the
compiler is expected to be determined by `[find_gcc]', and set the
GCC_UNDER_TEST TCL variable in testsuite/libgomp-site-extra.exp instead.

	libgomp/
	* configure.ac: Add testsuite/libgomp-site-extra.exp to output
	files.
	* configure: Regenerate.
	* testsuite/libgomp-site-extra.exp.in: New file.
	* testsuite/libgomp-test-support.exp.in (GCC_UNDER_TEST): Remove
	variable.
	* testsuite/Makefile.am (EXTRA_DEJAGNU_SITE_CONFIG): New
	variable.
	* testsuite/Makefile.in: Regenerate.

7 files changed, 24 insertions, 3 deletions

diff --git a/libgomp/ChangeLog b/libgomp/ChangeLog
index 3716f55..6f7327a 100644
--- a/libgomp/ChangeLog
+++ b/libgomp/ChangeLog
@@ -1,3 +1,15 @@
+2020-04-06  Maciej W. Rozycki  <macro@wdc.com>
+
+	* configure.ac: Add testsuite/libgomp-site-extra.exp to output
+	files.
+	* configure: Regenerate.
+	* testsuite/libgomp-site-extra.exp.in: New file.
+	* testsuite/libgomp-test-support.exp.in (GCC_UNDER_TEST): Remove
+	variable.
+	* testsuite/Makefile.am (EXTRA_DEJAGNU_SITE_CONFIG): New
+	variable.
+	* testsuite/Makefile.in: Regenerate.
+
 2020-04-03  Thomas Schwinge  <thomas@codesourcery.com>
 
 	PR tree-optimization/89713
diff --git a/libgomp/configure b/libgomp/configure
index b0efd87..d8d98f1 100755
--- a/libgomp/configure
+++ b/libgomp/configure
@@ -17047,6 +17047,8 @@ ac_config_files="$ac_config_files Makefile testsuite/Makefile libgomp.spec"
 
 ac_config_files="$ac_config_files testsuite/libgomp-test-support.pt.exp:testsuite/libgomp-test-support.exp.in"
 
+ac_config_files="$ac_config_files testsuite/libgomp-site-extra.exp"
+
 cat >confcache <<\_ACEOF
 # This file is a shell script that caches the results of configure
 # tests run on this system so they can be shared between configure
@@ -18200,6 +18202,7 @@ do
     "testsuite/Makefile") CONFIG_FILES="$CONFIG_FILES testsuite/Makefile" ;;
     "libgomp.spec") CONFIG_FILES="$CONFIG_FILES libgomp.spec" ;;
     "testsuite/libgomp-test-support.pt.exp") CONFIG_FILES="$CONFIG_FILES testsuite/libgomp-test-support.pt.exp:testsuite/libgomp-test-support.exp.in" ;;
+    "testsuite/libgomp-site-extra.exp") CONFIG_FILES="$CONFIG_FILES testsuite/libgomp-site-extra.exp" ;;
 
   *) as_fn_error $? "invalid argument: \`$ac_config_target'" "$LINENO" 5;;
   esac
diff --git a/libgomp/configure.ac b/libgomp/configure.ac
index be53881..ef5d293 100644
--- a/libgomp/configure.ac
+++ b/libgomp/configure.ac
@@ -436,4 +436,5 @@ GCC_BASE_VER
 AC_CONFIG_FILES(omp.h omp_lib.h omp_lib.f90 libgomp_f.h)
 AC_CONFIG_FILES(Makefile testsuite/Makefile libgomp.spec)
 AC_CONFIG_FILES([testsuite/libgomp-test-support.pt.exp:testsuite/libgomp-test-support.exp.in])
+AC_CONFIG_FILES([testsuite/libgomp-site-extra.exp])
 AC_OUTPUT
diff --git a/libgomp/testsuite/Makefile.am b/libgomp/testsuite/Makefile.am
index 62b1855..655a413 100644
--- a/libgomp/testsuite/Makefile.am
+++ b/libgomp/testsuite/Makefile.am
@@ -12,6 +12,8 @@ _RUNTEST = $(shell if test -f $(top_srcdir)/../dejagnu/runtest; then \
 	     echo $(top_srcdir)/../dejagnu/runtest; else echo runtest; fi)
 RUNTESTDEFAULTFLAGS = --tool $$tool --srcdir $$srcdir
 
+EXTRA_DEJAGNU_SITE_CONFIG = libgomp-site-extra.exp
+
 # Instead of directly in ../testsuite/libgomp-test-support.exp.in, the
 # following variables have to be "routed through" this Makefile, for expansion
 # of the several (Makefile) variables used therein.
diff --git a/libgomp/testsuite/Makefile.in b/libgomp/testsuite/Makefile.in
index bf17761..52aa6c5 100644
--- a/libgomp/testsuite/Makefile.in
+++ b/libgomp/testsuite/Makefile.in
@@ -111,7 +111,8 @@ am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 DIST_COMMON = $(srcdir)/Makefile.am
 mkinstalldirs = $(SHELL) $(top_srcdir)/../mkinstalldirs
 CONFIG_HEADER = $(top_builddir)/config.h
-CONFIG_CLEAN_FILES = libgomp-test-support.pt.exp
+CONFIG_CLEAN_FILES = libgomp-test-support.pt.exp \
+	libgomp-site-extra.exp
 CONFIG_CLEAN_VPATH_FILES =
 AM_V_P = $(am__v_P_@AM_V@)
 am__v_P_ = $(am__v_P_@AM_DEFAULT_V@)
@@ -310,6 +311,7 @@ _RUNTEST = $(shell if test -f $(top_srcdir)/../dejagnu/runtest; then \
 	     echo $(top_srcdir)/../dejagnu/runtest; else echo runtest; fi)
 
 RUNTESTDEFAULTFLAGS = --tool $$tool --srcdir $$srcdir
+EXTRA_DEJAGNU_SITE_CONFIG = libgomp-site-extra.exp
 all: all-am
 
 .SUFFIXES:
@@ -344,6 +346,8 @@ $(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
 $(am__aclocal_m4_deps):
 libgomp-test-support.pt.exp: $(top_builddir)/config.status $(srcdir)/libgomp-test-support.exp.in
 	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+libgomp-site-extra.exp: $(top_builddir)/config.status $(srcdir)/libgomp-site-extra.exp.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
 
 mostlyclean-libtool:
 	-rm -f *.lo
diff --git a/libgomp/testsuite/libgomp-site-extra.exp.in b/libgomp/testsuite/libgomp-site-extra.exp.in
new file mode 100644
index 0000000..c0d2666
--- /dev/null
+++ b/libgomp/testsuite/libgomp-site-extra.exp.in
@@ -0,0 +1 @@
+set GCC_UNDER_TEST {@CC@}
diff --git a/libgomp/testsuite/libgomp-test-support.exp.in b/libgomp/testsuite/libgomp-test-support.exp.in
index 6ec10c7..98fb442 100644
--- a/libgomp/testsuite/libgomp-test-support.exp.in
+++ b/libgomp/testsuite/libgomp-test-support.exp.in
@@ -1,5 +1,3 @@
-set GCC_UNDER_TEST {@CC@}
-
 set cuda_driver_include "@CUDA_DRIVER_INCLUDE@"
 set cuda_driver_lib "@CUDA_DRIVER_LIB@"
 set hsa_runtime_lib "@HSA_RUNTIME_LIB@"