CC_FOR_TARGET et al

The top level Makefile, the ld Makefile and others, define
CC_FOR_TARGET to be a compiler for the binutils target machine.  This
is the compiler that should be used for almost all tests with C
source.  There are _FOR_TARGET versions of CFLAGS, CXX, and CXXFLAGS
too.  This was all supposed to work with the testsuite .exp files
using CC for the target compiler, and CC_FOR_HOST for the host
compiler, with the makefiles passing CC=$CC_FOR_TARGET and
CC_FOR_HOST=$CC to the runtest invocation.

One exception to the rule of using CC_FOR_TARGET is the native-only ld
bootstrap test, which uses the newly built ld to link a copy of
itself.  Since the files being linked were created with the host
compiler, the boostrap test should use CC and CFLAGS, in case some
host compiler option provides needed libraries automatically.
However, bootstrap.exp used CC where it should have used CC_FOR_HOST.
I set about fixing that problem, then decided that playing games in
the makefiles with CC was a bad idea.  Not only is it confusing, but
other dejagnu code knows about CC_FOR_TARGET.  See dejagnu/target.exp.

So this patch gets rid of the makefile variable renaming and changes
all the .exp files to use the correct _FOR_TARGET variables.
CC_FOR_HOST and CFLAGS_FOR_HOST disappear.  A followup patch will
correct bootstrap.exp to use CFLAGS, and a number of other things I
noticed.

binutils/
	* testsuite/lib/binutils-common.exp (run_dump_test): Use
	CC_FOR_TARGET and CFLAGS_FOR_TARGET rather than CC and CFLAGS.
ld/
	* Makefile.am (check-DEJAGNU): Don't set CC to CC_FOR_TARGET
	and similar.  Pass variables with unchanged names.  Don't set
	CC_FOR_HOST or CFLAGS_FOR_HOST.
	* Makefile.in: Regenerate.
	* testsuite/config/default.exp: Update default CC and similar.
	(compiler_supports, plug_opt): Use CC_FOR_TARGET.
	* testsuite/ld-cdtest/cdtest.exp: Replace all uses of CC with
	CC_FOR_TARGET, and similarly for CFLAGS, CXX and CXXFLAGS.
	* testsuite/ld-auto-import/auto-import.exp: Likewise.
	* testsuite/ld-cygwin/exe-export.exp: Likewise.
	* testsuite/ld-elf/dwarf.exp: Likewise.
	* testsuite/ld-elf/indirect.exp: Likewise.
	* testsuite/ld-elf/shared.exp: Likewise.
	* testsuite/ld-elfcomm/elfcomm.exp: Likewise.
	* testsuite/ld-elfvers/vers.exp: Likewise.
	* testsuite/ld-elfvsb/elfvsb.exp: Likewise.
	* testsuite/ld-elfweak/elfweak.exp: Likewise.
	* testsuite/ld-gc/gc.exp: Likewise.
	* testsuite/ld-ifunc/ifunc.exp: Likewise.
	* testsuite/ld-mn10300/mn10300.exp: Likewise.
	* testsuite/ld-pe/pe-compile.exp: Likewise.
	* testsuite/ld-pe/pe-run.exp: Likewise.
	* testsuite/ld-pe/pe-run2.exp: Likewise.
	* testsuite/ld-pie/pie.exp: Likewise.
	* testsuite/ld-plugin/lto.exp: Likewise.
	* testsuite/ld-plugin/plugin.exp: Likewise.
	* testsuite/ld-scripts/crossref.exp: Likewise.
	* testsuite/ld-selective/selective.exp: Likewise.
	* testsuite/ld-sh/sh.exp: Likewise.
	* testsuite/ld-shared/shared.exp: Likewise.
	* testsuite/ld-srec/srec.exp: Likewise.
	* testsuite/ld-undefined/undefined.exp: Likewise.
	* testsuite/ld-unique/unique.exp: Likewise.
	* testsuite/ld-x86-64/tls.exp: Likewise.
	* testsuite/lib/ld-lib.exp: Likewise.
libctf/
	* Makefile.am (check-DEJAGNU): Don't set CC to CC_FOR_TARGET.
	Pass CC and CC_FOR_TARGET.  Don't set CC_FOR_HOST.
	* Makefile.in: Regenerate.
	* testsuite/config/default.exp: Update default CC and similar.
	* testsuite/lib/ctf-lib.exp (run_native_host_cmd): Use CC rather
	than CC_FOR_HOST.
	(run_lookup_test): Use CC_FOR_TARGET and CFLAGS_FOR_TARGET.

1 files changed, 20 insertions, 20 deletions

diff --git a/ld/testsuite/ld-scripts/crossref.exp b/ld/testsuite/ld-scripts/crossref.exp
index 4eaafcc..42ce87f 100644
--- a/ld/testsuite/ld-scripts/crossref.exp
+++ b/ld/testsuite/ld-scripts/crossref.exp
@@ -38,37 +38,37 @@ if { ![check_compiler_available] } {
     return
 }
 
-set old_CFLAGS "$CFLAGS"
+set old_CFLAGS "$CFLAGS_FOR_TARGET"
 
 # Pass -fplt to CC since -fno-plt doesn't work with NOCROSSREFS tests.
 # Also add $NOPIE_CFLAGS since PIE doesn't work NOCROSSREFS tests.
-set old_CC "$CC"
-set CC "$CC $PLT_CFLAGS $NOPIE_CFLAGS"
+set old_CC "$CC_FOR_TARGET"
+append CC_FOR_TARGET " $PLT_CFLAGS $NOPIE_CFLAGS"
 
 # Xtensa targets currently default to putting literal values in a separate
 # section and that requires linker script support, so put literals in text.
 if [istarget xtensa*-*-*] {
-    set CFLAGS "$CFLAGS -mtext-section-literals"
+    append CFLAGS_FOR_TARGET " -mtext-section-literals"
 }
 
 # Prevent the use of the MeP's small data area which references a symbol
 # called __sdabase which will not be defined by our test linker scripts.
 if [istarget mep*-*-elf] {
-    set CFLAGS "-mtiny=0"
+    append CFLAGS_FOR_TARGET " -mtiny=0"
 }
 
 # The .dsbt section and __c6xabi_DSBT_BASE are not defined in our test
 # linker scripts.
 if [istarget tic6x*-*-*] {
-    set CFLAGS "-mno-dsbt -msdata=none"
+    append CFLAGS_FOR_TARGET " -mno-dsbt -msdata=none"
 }
 
-if { ![ld_compile "$CC $NOSANITIZE_CFLAGS $NOLTO_CFLAGS" "$srcdir/$subdir/cross1.c" tmpdir/cross1.o] \
-     || ![ld_compile "$CC $NOSANITIZE_CFLAGS $NOLTO_CFLAGS" "$srcdir/$subdir/cross2.c" tmpdir/cross2.o] } {
+if { ![ld_compile "$CC_FOR_TARGET $NOSANITIZE_CFLAGS $NOLTO_CFLAGS" "$srcdir/$subdir/cross1.c" tmpdir/cross1.o] \
+     || ![ld_compile "$CC_FOR_TARGET $NOSANITIZE_CFLAGS $NOLTO_CFLAGS" "$srcdir/$subdir/cross2.c" tmpdir/cross2.o] } {
     unsupported $test1
     unsupported $test2
-    set CFLAGS "$old_CFLAGS"
-    set CC "$old_CC"
+    set CFLAGS_FOR_TARGET "$old_CFLAGS"
+    set CC_FOR_TARGET "$old_CC"
     return
 }
 
@@ -102,10 +102,10 @@ if [string match "" $exec_output] then {
 
 # Check cross references within a single object.
 
-if { ![ld_compile "$CC $NOSANITIZE_CFLAGS $NOLTO_CFLAGS" "$srcdir/$subdir/cross3.c" tmpdir/cross3.o] } {
+if { ![ld_compile "$CC_FOR_TARGET $NOSANITIZE_CFLAGS $NOLTO_CFLAGS" "$srcdir/$subdir/cross3.c" tmpdir/cross3.o] } {
     unsupported $test2
-    set CFLAGS "$old_CFLAGS"
-    set CC "$old_CC"
+    set CFLAGS_FOR_TARGET "$old_CFLAGS"
+    set CC_FOR_TARGET "$old_CC"
     return
 }
 
@@ -127,17 +127,17 @@ if [string match "" $exec_output] then {
 
 # Check cross references for ld -r
 
-if { ![ld_compile "$CC $NOSANITIZE_CFLAGS $NOLTO_CFLAGS" "$srcdir/$subdir/cross4.c" tmpdir/cross4.o] } {
+if { ![ld_compile "$CC_FOR_TARGET $NOSANITIZE_CFLAGS $NOLTO_CFLAGS" "$srcdir/$subdir/cross4.c" tmpdir/cross4.o] } {
     unsupported $test3
-    set CFLAGS "$old_CFLAGS"
-    set CC "$old_CC"
+    set CFLAGS_FOR_TARGET "$old_CFLAGS"
+    set CC_FOR_TARGET "$old_CC"
     return
 }
 
 if ![ld_relocate $ld tmpdir/cross3-partial.o "tmpdir/cross1.o tmpdir/cross4.o"] {
     fail $test3
-    set CFLAGS "$old_CFLAGS"
-    set CC "$old_CC"
+    set CFLAGS_FOR_TARGET "$old_CFLAGS"
+    set CC_FOR_TARGET "$old_CC"
     return
 }
 
@@ -210,5 +210,5 @@ if [string match "" $exec_output] then {
     }
 }
 
-set CFLAGS "$old_CFLAGS"
-set CC "$old_CC"
+set CFLAGS_FOR_TARGET "$old_CFLAGS"
+set CC_FOR_TARGET "$old_CC"