Hi Alexandre,
>> I'm a little concerned about retaining the ability to preserve
>> full-featured install testing without unnecessary effort for those who
>> don't use test_installed specifically, or when no traces of the build
>> tree have remained.
>
> Understood: I agree that the current solution is limited and just a
> first step.
>
>> One could presumably arrange to install or otherwise preserve
>> auto-host.h, but wouldn't it make more sense to install the (presumably
>
> That occured to me, too. Such a minor change could also easily be
> backported to a couple of older releases. I guess it would be best to
> put it somewhere in $libsubdir where it won't be found by regular header
> file search.
this version of the patch does just that, also installing auto-host.h.
Ok for trunk that way?
Thanks.
Rainer
---------------------------------------------------------------------------
Several of the testsuite's effective targets are supposed to match the
result of configure tests. However, they often try to redo the tests,
which leads to code duplication and inconsistencies.
Instead, this patch provides a framework to automatically generate
check_effective_target_<effective-target> procs that match an
auto-host.h macro and loads the result into targets-support.exp.
The effective target definitions are read from et-static.def, similar to
the existing *.opt files, with a two-step process: preprocessing
et-static.def by stripping comments and empty lines, emitting the result
in a simple record format. That is used to scan auto-host.h to provide
the actual effective-target definitions.
Both the resulting et-static.def and the auto-host.h file are installed
so they can seamlessly be used for installed testing.
contrib/test_installed has been modified to allow for three scenarios:
* By default, the testsuite will load the installed et-static.exp file
directly.
* To use a modified or fallback et-static.exp, it can be specified with
--with-et-static.
* With --with-auto-host-h, an et-static.exp file matching the source
tree to be tested can be generated from a corresponding auto-host.h
file. This allows for testing an older installed compiler with a
newer source tree.
To avoid interfering with the target-supports.exp code to locate
et-static.exp, test_installed only emits the *_UNDER_TEST variables to
site.exp if a particular front end is actually tested.
To demonstrate the facility, this patch uses the recently added
HAVE_LD_AT_FILE check as a trivial example. Just as HAVE_LD_AT_FILE was
used to replace the current HAVE_GNU_LD, this patch creates a new
ld_at_file effective target, replacing one use of the gld effective
target.
Bootstrapped without regressions on i386-pc-solaris2.11 (as/ld and
gas/gld) and x86_64-pc-linux-gnu. Also tested with test_installed on
i386-pc-solaris2.11.
--
-----------------------------------------------------------------------------
Rainer Orth, Center for Biotechnology, Bielefeld University
2026-01-13 Rainer Orth <[email protected]>
gcc:
* et-gather.awk, gen-et-static.awk: New scripts.
* Makefile.in (testsuitedir): New.
(native): Depend on testsuite/et-static.exp.
(clean): Remove etlist.
(distclean): Remove et-static.exp.
(install-testsuite): New target.
(install): Depend on it.
(site.exp): Depend on testsuite/et-static.exp.
(testsuite/et-static.exp): New target.
* doc/sourcebuild.texi (Effective-Target Keywords): Document
et-static.def.
(Effective-Target Keywords, Other attributes): Document
ld_at_file.
testsuite:
* lib/et-static.def: New file.
* lib/target-supports.exp: Load et-static.exp.
* gcc.misc-tests/outputs.exp: Use ld_at_file effective target
instead of gld.
Update comment.
contrib:
* test_installed (--with-auto-host-h): New option.
(--with-et-static): Likewise.
(--with-objc): Likewise.
Generate et-static.def if --with-auto-host-h is specified.
(GCC_UNDER_TEST): Only emit to site.def if enabled.
(GXX_UNDER_TEST): Likewise.
(GFORTRAN_UNDER_TEST): Likewise.
(OBJC_UNDER_TEST): Likewise.
(et_static): Emit to site.exp if specified.
# HG changeset patch
# Parent f81d088afb31d3600fa3f4d1470e6daf8988020e
build: testsuite: Generate effective targets from auto-host.h
* * *
testsuite: Install et-static.exp for installed testing
diff --git a/contrib/test_installed b/contrib/test_installed
--- a/contrib/test_installed
+++ b/contrib/test_installed
@@ -15,14 +15,21 @@
# --testsuite, --srcdir will be ignored; otherwise, `/gcc/testsuite'
# will be appended to the srcdir.
+# target-supports.exp depends on et-static.exp generated from auto-host.h.
+# It is usually taken from the installed compiler, but can be specified
+# using --with-et-static. To support testing with a source tree newer than
+# the installed compiler, it can also be generated from an auto-host.h
+# specified with --with-auto-host-h. If the actual auto-host.h is missing,
+# /dev/null can be used to generate a fallback et-static.exp.
+
# You may specify where the binaries to be tested should be picked up
# from. If you specify --prefix=/some/dir, gcc, g++ and gfortran will be
# looked for at /some/dir/bin. Each one may be overridden by
# specifying --with-gcc=/pathname/to/gcc, --with-g++=/pathname/to/g++
# and --with-gfortran=/pathname/to/gfortran. If you specify --without-gcc,
-# --without-g++ or --without-gfortran, the test for the specified program
-# will be skipped. By default, gcc, g++ and gfortran will be searched in
-# the PATH.
+# --without-g++ --without-gfortran, or --without-objc the test for the
+# specified program will be skipped. By default, gcc, g++ and gfortran
+# will be searched in the PATH.
# An additional argument may specify --tmpdir=/some/dir; by default,
# temporaries will be stored in the current directory, where the log
@@ -46,6 +53,8 @@ libiconv=-liconv
while true; do
case "$1" in
--with-testsuite=*) testsuite=`echo "$1" | sed 's/[^=]*=//'`; shift;;
+ --with-auto-host-h=*) auto_host_h=`echo "$1" | sed 's/[^=]*=//'`; shift;;
+ --with-et-static=*) et_static=`echo "$1" | sed 's/[^=]*=//'`; shift;;
--srcdir=*) srcdir=`echo "$1" | sed 's/[^=]*=//'`; shift;;
--target=*) target=`echo "$1" | sed 's/[^=]*=//'`; shift;;
--prefix=*) prefix=`echo "$1" | sed 's/[^=]*=//'`; shift;;
@@ -53,6 +62,7 @@ while true; do
--with-gcc=*) GCC_UNDER_TEST=`echo "$1" | sed 's/[^=]*=//'`; shift;;
--with-g++=*) GXX_UNDER_TEST=`echo "$1" | sed 's/[^=]*=//'`; shift;;
--with-gfortran=*) GFORTRAN_UNDER_TEST=`echo "$1" | sed 's/[^=]*=//'`; shift;;
+ --with-objc=*) OBJC_UNDER_TEST=`echo "$1" | sed 's/[^=]*=//'`; shift;;
--with-alt-cc=*) ALT_CC_UNDER_TEST=`echo "$1" | sed 's/[^=]*=//'`; shift;;
--with-alt-cxx=*) ALT_CXX_UNDER_TEST=`echo "$1" | sed 's/[^=]*=//'`; shift;;
--with-compat-options=*) COMPAT_OPTIONS=`echo "$1" | sed 's/[^=]*=//'`; shift;;
@@ -77,6 +87,8 @@ Supported arguments:
--help prints this page
--with-testsuite=/some/dir/gcc/testsuite specify the testsuite directory
+--with-auto-host-h=/some/dir/auto-host.h specify auto-host.h
+--with-et-static=/some/dir/et-static.exp specify et-static.exp
--srcdir=/some/dir same as --with-testsuite=/some/dir/gcc/testsuite
[deduced from shell-script pathname]
@@ -88,6 +100,7 @@ Supported arguments:
--with-gcc=/some/dir/bin/gcc use specified gcc program [gcc]
--with-g++=/some/dir/bin/g++ use specified g++ program [g++]
--with-gfortran=/some/dir/bin/gfortran use specified gfortran program [gfortran]
+--with-objc=/some/dir/bin/gcc use specified gcc program [gcc]
--with-alt-cc=/some/compiler use specified alternative compiler in compat tests
--with-alt-cxx=/some/compiler use specified alternative compiler in compat tests
--with-compat-options=opts use specified COMPAT_OPTIONS in compat tests
@@ -124,6 +137,20 @@ if test x"${testsuite+set}" != x"set" &&
srcdir=$top_srcdir
fi
+# Prefer et-static.exp explicitly specified. Alternatively, generate one
+# from the specified auto-host.h.
+if test x"${et_static+set}" != x"set" && test x"${auto_host_h+set}" = x"set"; then
+ gcc_srcdir=${srcdir}/gcc
+ awk -f ${gcc_srcdir}/et-gather.awk \
+ ${gcc_srcdir}/testsuite/lib/et-static.def > etlist
+ awk -f ${gcc_srcdir}/gen-et-static.awk -v etlist=etlist \
+ ${auto_host_h} > et-static.exp
+ et_static=et-static.exp
+fi
+
+# If neither option has been given, the testsuite will use the et-static.exp
+# from the installed compiler.
+
cat >site.exp <<EOF
set rootme "."
set tmpdir "${tmpdir-`${PWDCMD-pwd}`}"
@@ -131,19 +158,32 @@ set srcdir "${testsuite-${srcdir}/gcc/te
set libiconv "$libiconv"
set CFLAGS ""
set CXXFLAGS ""
+EOF
+test x"${GCC_UNDER_TEST}" = x"no" || cat >>site.exp <<EOF
set GCC_UNDER_TEST "${GCC_UNDER_TEST-${prefix}${prefix+/bin/}\
${target+$target-}gcc}"
+EOF
+test x"${GXX_UNDER_TEST}" = x"no" || cat >>site.exp <<EOF
set GXX_UNDER_TEST "${GXX_UNDER_TEST-${prefix}${prefix+/bin/}\
${target+$target-}g++}"
+EOF
+test x"${GFORTRAN_UNDER_TEST}" = x"no" || cat >>site.exp <<EOF
set GFORTRAN_UNDER_TEST "${GFORTRAN_UNDER_TEST-${prefix}${prefix+/bin/}\
${target+$target-}gfortran}"
+EOF
+test x"${OBJCC_UNDER_TEST}" = x"no" || cat >>site.exp <<EOF
set OBJC_UNDER_TEST "${OBJC_UNDER_TEST-${prefix}${prefix+/bin/}\
${target+$target-}gcc}"
+EOF
+cat >>site.exp <<EOF
set HOSTCC "${HOSTCC-cc}"
set HOSTCXX "${HOSTCXX-c++}"
set HOSTCFLAGS ""
set HOSTCXXFLAGS ""
EOF
+if test x${et_static+set} = xset; then
+ echo "set et_static \"${et_static}\"" >> site.exp
+fi
if test x${target} != x; then
target_canonical=`$top_srcdir/config.sub $target`
echo "set target_triplet $target_canonical" >> site.exp
diff --git a/gcc/Makefile.in b/gcc/Makefile.in
--- a/gcc/Makefile.in
+++ b/gcc/Makefile.in
@@ -689,6 +689,8 @@ plugin_resourcesdir = $(libsubdir)/plugi
plugin_includedir = $(plugin_resourcesdir)/include
# Directory in which plugin specific executables are installed
plugin_bindir = $(libexecsubdir)/plugin
+# Directory where files for installed testing are installed
+testsuitedir = $(libsubdir)/testsuite
# Used to produce a relative $(gcc_tooldir) in gcc.o
ifeq ($(enable_as_accelerator),yes)
unlibsubdir = ../../../../..
@@ -2288,7 +2290,8 @@ start.encap: native xgcc$(exeext) cpp$(e
rest.encap: lang.rest.encap
# This is what is made with the host's compiler
# whether making a cross compiler or not.
-native: config.status auto-host.h build-@POSUB@ $(LANGUAGES) \
+native: config.status auto-host.h testsuite/et-static.exp build-@POSUB@ \
+ $(LANGUAGES) \
$(EXTRA_PROGRAMS) $(COLLECT2) lto-wrapper$(exeext) \
gcc-ar$(exeext) gcc-nm$(exeext) gcc-ranlib$(exeext)
@@ -4063,6 +4066,7 @@ clean: mostlyclean lang.clean
-rm -f libgcc_s*
-rm -f libunwind*
-rm -f config.h tconfig.h bconfig.h tm_p.h tm.h
+ -rm -f etlist
-rm -f options.cc options.h optionlist
-rm -f cs-*
-rm -f doc/*.dvi
@@ -4082,6 +4086,7 @@ distclean: clean lang.distclean
-rm -f TAGS */TAGS
-rm -f *.asm
-rm -f site.exp site.bak testsuite/site.exp testsuite/site.bak
+ -rm -f testsuite/et-static.exp
-rm -f testsuite/*.log testsuite/*.sum
-cd testsuite && rm -f x *.x *.x? *.exe *.rpo *.o *.s *.S *.cc
-cd testsuite && rm -f *.out *.gcov *$(coverageexts)
@@ -4109,7 +4114,7 @@ maintainer-clean:
# broken is small.
install: install-common $(INSTALL_HEADERS) \
install-cpp install-man install-info install-@POSUB@ \
- install-driver install-lto-wrapper install-gcc-ar
+ install-driver install-lto-wrapper install-gcc-ar install-testsuite
ifeq ($(enable_plugin),yes)
install: install-plugin
@@ -4580,6 +4585,12 @@ install-gcc-ar: installdirs gcc-ar$(exee
done; \
fi
+# Install files needed for installed testing.
+install-testsuite: testsuite/et-static.exp auto-host.h installdirs
+ $(mkinstalldirs) $(DESTDIR)$(testsuitedir)
+ $(INSTALL_DATA) testsuite/et-static.exp $(DESTDIR)$(testsuitedir)/et-static.exp
+ $(INSTALL_DATA) auto-host.h $(DESTDIR)$(testsuitedir)/auto-host.h
+
# Cancel installation by deleting the installed files.
uninstall: lang.uninstall
-rm -rf $(DESTDIR)$(libsubdir)
@@ -4606,7 +4617,7 @@ uninstall: lang.uninstall
target_subdir = @target_subdir@
-site.exp: ./config.status Makefile
+site.exp: ./config.status Makefile testsuite/et-static.exp
@echo "Making a new config file..."
-@rm -f ./site.tmp
@$(STAMP) site.exp
@@ -4689,6 +4700,12 @@ site.exp: ./config.status Makefile
-e '1,/^## All variables above are.*##/ d' >> site.exp
-@rm -f ./site.tmp
+testsuite/et-static.exp: $(srcdir)/et-gather.awk $(srcdir)/gen-et-static.awk \
+ $(srcdir)/testsuite/lib/et-static.def Makefile auto-host.h
+ $(AWK) -f $(srcdir)/et-gather.awk $(srcdir)/testsuite/lib/et-static.def > etlist
+ -test -d $(TESTSUITEDIR) || mkdir $(TESTSUITEDIR)
+ $(AWK) -f $(srcdir)/gen-et-static.awk -v etlist=etlist auto-host.h > $@
+
CHECK_TARGETS = @check_languages@
check: $(CHECK_TARGETS)
diff --git a/gcc/doc/sourcebuild.texi b/gcc/doc/sourcebuild.texi
--- a/gcc/doc/sourcebuild.texi
+++ b/gcc/doc/sourcebuild.texi
@@ -1498,7 +1498,9 @@ are expected to fail some tests.
Effective-target keywords are defined in @file{lib/target-supports.exp} in
the GCC testsuite, with the exception of those that are documented as
-being local to a particular test directory.
+being local to a particular test directory. Effective-target keywords
+matching @file{auto-host.h} macros can be generated from definitions
+in @file{lib/et-static.def}.
The @samp{effective target} takes into account all of the compiler options
with which the test will be compiled, including the multilib options.
@@ -3106,6 +3108,9 @@ Target uses GNU @command{ld}.
Target keeps null pointer checks, either due to the use of
@option{-fno-delete-null-pointer-checks} or hardwired into the target.
+@item ld_at_file
+Target supports GNU style response files.
+
@item llvm_binutils
Target is using an LLVM assembler and/or linker, instead of GNU Binutils.
diff --git a/gcc/et-gather.awk b/gcc/et-gather.awk
new file mode 100644
--- /dev/null
+++ b/gcc/et-gather.awk
@@ -0,0 +1,38 @@
+# Copyright (C) 2026 Free Software Foundation, Inc.
+# Based on opt-gather.awk.
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation; either version 3, or (at your option) any
+# later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; see the file COPYING3. If not see
+# <http://www.gnu.org/licenses/>.
+
+# This Awk script takes et-static.def and creates a three-field list
+# suitable for input into gen-et-static.awk.
+#
+# Usage: awk -f et-gather.awk et-static.def > outputfile
+
+BEGIN { numrec = 0 }
+
+# Ignore comments and blank lines
+/^[ \t]*(#|$)/ { flag = 0; next }
+/^[^ \t]/ { if (flag == 0) {
+ record[++numrec] = $0
+ flag = 1 }
+ else {
+ record[numrec] = record[numrec] SUBSEP $0
+ }
+}
+
+END {
+ for (i = 1; i <= numrec; i++) {
+ print record[i] }
+}
diff --git a/gcc/gen-et-static.awk b/gcc/gen-et-static.awk
new file mode 100644
--- /dev/null
+++ b/gcc/gen-et-static.awk
@@ -0,0 +1,77 @@
+# Copyright (C) 2026 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation; either version 3, or (at your option) any
+# later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; see the file COPYING3. If not see
+# <http://www.gnu.org/licenses/>.
+
+# This Awk script takes input file (usually auto-host.h) and effective target
+# definitions from preprocessed et-static.def, and writes et-static.exp
+# implementing checks for select effective-target keywords.
+#
+# Usage: awk -v etlist=<path to etlist> -f gen-et-static.awk <input file>
+
+BEGIN {
+ input = ARGV[1]
+
+ SAVEFS=FS
+ FS=SUBSEP
+
+ # Read preprocessed et-static.def. Each line consists of
+ # <effective-target> <macro> <comment>.
+ while ((getline < etlist) > 0) {
+ et[$2] = $1
+ comment[$2] = $3
+ }
+ close(etlist)
+
+ FS=SAVEFS
+}
+
+function emit_effective_target(name, value, comment)
+{
+ print "";
+ print "# " comment;
+ print "proc check_effective_target_" name " { } {";
+ print " return " value;
+ print "}";
+}
+
+# #define <MACRO> <value>
+/^#define/ { value[$2] = $3 }
+
+# /* #undef <MACRO> */
+/^\/\* #undef/ { value[$3] = 0 }
+
+END {
+ print "# This file is auto-generated by gen-et-static.awk from " input
+ print "# and et-static.def."
+
+ for (macro in et) {
+ if (macro in value) {
+ val = value[macro]
+ # Characters, strings and tri-state macros would need
+ # special handling.
+ if (val !~ /^[01]/) {
+ print "#error non-0/1/#undef value " val " for " macro
+ exit(1)
+ }
+ } else {
+ # Treat missing macros as unsupported.
+ print "#warning definition for " macro " missing"
+ val = 0
+ }
+
+ emit_effective_target(et[macro], val,
+ "Return 1 if " comment[macro] ", 0 otherwise.");
+ }
+}
diff --git a/gcc/testsuite/gcc.misc-tests/outputs.exp b/gcc/testsuite/gcc.misc-tests/outputs.exp
--- a/gcc/testsuite/gcc.misc-tests/outputs.exp
+++ b/gcc/testsuite/gcc.misc-tests/outputs.exp
@@ -50,9 +50,9 @@ if !$skip_lto {
set ltop [check_linker_plugin_available]
}
-# Check for GNU ld. Some files like .ld1_args depend on this. This
-# should really be testing whether the linker supports GNU style response files.
-set gld [check_effective_target_gld]
+# Check if the linker supports GNU style response files. Some files like
+# .ld1_args depend on this.
+set ld_at_file [check_effective_target_ld_at_file]
# Darwin's linker is not silent about missing -L values.
set ld64 [istarget *-*-darwin*]
@@ -180,7 +180,7 @@ proc outest { test sources opts dirs out
foreach og $olist {
if { [string index $og 0] == "!" } {
global gspd ltop
- global gld ld64
+ global ld_at_file ld64
set cond [expr $og]
continue
}
@@ -363,14 +363,14 @@ outest "$b-21 exe savetmp named2" $mult
# Additional files are created when an @file is used
if !$skip_atsave {
-outest "$b-22 exe savetmp namedb-2" $sing "@$devnull -o $b.exe -save-temps" {} {{--0.i --0.s --0.o .args.0 !!$gld .ld1_args !0 .exe}}
-outest "$b-23 exe savetmp named2-2" $mult "@$devnull -o $b.exe -save-temps" {} {{--1.i --1.s --1.o --2.i --2.s --2.o .args.0 !!$gld .ld1_args !0 .exe}}
-outest "$b-24 exe savetmp named2-3" $mult "@$devnull -I dummy -o $b.exe -save-temps" {} {{--1.i --1.s --1.o --2.i --2.s --2.o -args.0 -args.1 .args.2 !!$gld .ld1_args !0 .exe}}
+outest "$b-22 exe savetmp namedb-2" $sing "@$devnull -o $b.exe -save-temps" {} {{--0.i --0.s --0.o .args.0 !!$ld_at_file .ld1_args !0 .exe}}
+outest "$b-23 exe savetmp named2-2" $mult "@$devnull -o $b.exe -save-temps" {} {{--1.i --1.s --1.o --2.i --2.s --2.o .args.0 !!$ld_at_file .ld1_args !0 .exe}}
+outest "$b-24 exe savetmp named2-3" $mult "@$devnull -I dummy -o $b.exe -save-temps" {} {{--1.i --1.s --1.o --2.i --2.s --2.o -args.0 -args.1 .args.2 !!$ld_at_file .ld1_args !0 .exe}}
if $ld64 {
# Darwin's linker warns about missing args to -L.
- outest "$b-25 exe savetmp named2-4" $mult "@$devnull -I dummy -L dummy -o $b.exe -save-temps -Wl,-w" {} {{--1.i --1.s --1.o --2.i --2.s --2.o -args.0 -args.1 .args.2 !!0 .args.3 !!$gld .ld1_args !0 .exe}}
+ outest "$b-25 exe savetmp named2-4" $mult "@$devnull -I dummy -L dummy -o $b.exe -save-temps -Wl,-w" {} {{--1.i --1.s --1.o --2.i --2.s --2.o -args.0 -args.1 .args.2 !!0 .args.3 !!$ld_at_file .ld1_args !0 .exe}}
} else {
- outest "$b-25 exe savetmp named2-4" $mult "@$devnull -I dummy -L dummy -o $b.exe -save-temps" {} {{--1.i --1.s --1.o --2.i --2.s --2.o -args.0 -args.1 .args.2 .args.3 !!$gld .ld1_args !0 .exe}}
+ outest "$b-25 exe savetmp named2-4" $mult "@$devnull -I dummy -L dummy -o $b.exe -save-temps" {} {{--1.i --1.s --1.o --2.i --2.s --2.o -args.0 -args.1 .args.2 .args.3 !!$ld_at_file .ld1_args !0 .exe}}
}
}
diff --git a/gcc/testsuite/lib/et-static.def b/gcc/testsuite/lib/et-static.def
new file mode 100644
--- /dev/null
+++ b/gcc/testsuite/lib/et-static.def
@@ -0,0 +1,29 @@
+# Definitions of static effective targets determined from auto-host.h.
+
+# Copyright (C) 2026 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation; either version 3, or (at your option) any
+# later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; see the file COPYING3. If not see
+# <http://www.gnu.org/licenses/>.
+
+# Each record consist of 3 lines:
+#
+# <effective target>
+# <MACRO>
+# <comment> to be emitted as "Return 0 if <comment>, 1 otherwise."
+
+# Keep this sorted alphabetically by effective-target name. */
+
+ld_at_file
+HAVE_LD_AT_FILE
+your linker supports GNU style response files
diff --git a/gcc/testsuite/lib/target-supports.exp b/gcc/testsuite/lib/target-supports.exp
--- a/gcc/testsuite/lib/target-supports.exp
+++ b/gcc/testsuite/lib/target-supports.exp
@@ -19,6 +19,31 @@
# This file defines procs for determining features supported by the target.
+# Try to load effective-target procs from the generated et-static.exp in
+# gcc/testsuite.
+
+global tool_root_dir
+global et_static
+
+if { ![info exists et_static] } {
+ global GCC_UNDER_TEST
+
+ if [info exists GCC_UNDER_TEST] {
+ set compiler $GCC_UNDER_TEST
+ } else {
+ set compiler [find_gcc]
+ }
+
+ set output [remote_exec host "$compiler -print-file-name=testsuite/et-static.exp"]
+ set et_static [string trim [lindex $output 1]]
+}
+
+if { ![file exists $et_static] } {
+ error "Couldn't find $et_static."
+}
+
+load_file $et_static
+
# Try to compile the code given by CONTENTS into an output file of
# type TYPE, where TYPE is as for target_compile. Return a list
# whose first element contains the compiler messages and whose
