Hi!
Ping.
Grüße
Thomas
On 2023-09-12T12:58:27+0200, I wrote:
> Hi!
>
> On 2020-04-20T14:18:40+0100, "Maciej W. Rozycki via Gcc-patches"
> <gcc-patches@gcc.gnu.org> wrote:
>> Fix a problem with the libffi testsuite using a method to determine the
>> compiler to use resulting in the tool being different from one the
>> library has been built with, and causing a catastrophic failure from the
>> inability to actually choose any compiler at all in a cross-compilation
>> configuration.
>
> This has since, as far as I can tell, been resolved properly by H.J. Lu's
> GCC commit 5be7b66998127286fada45e4f23bd8a2056d553e,
> "libffi: Integrate build with GCC", and
> GCC commit 4824ed41ba7cd63e60fd9f8769a58b79935a90d1
> "libffi: Integrate testsuite with GCC testsuite".
>
>> Address this problem by providing a DejaGNU configuration file defining
>> the compiler to use, via the CC_FOR_TARGET TCL variable, set from $CC by
>> autoconf, which will have all the required options set for the target
>> compiler to build executables in the environment configured
>
> As we've found, this is conceptually problematic, as discussed in
> <https://inbox.sourceware.org/875y868a4b....@euler.schwinge.homeip.net>
> "Consider '--with-build-sysroot=[...]' for target libraries' build-tree
> testing (instead of build-time 'CC' etc.) [PR109951]".
> I therefore suggest to apply to GCC libffi the conceptually same changes
> as I've just pushed for libgomp:
> <https://inbox.sourceware.org/874jjzzqc2....@euler.schwinge.homeip.net>
> "libgomp: Consider '--with-build-sysroot=[...]' for target libraries'
> build-tree testing (instead of build-time 'CC' etc.) [PR91884, PR109951]".
> OK to push the attached
> "libffi: Consider '--with-build-sysroot=[...]' for target libraries'
> build-tree testing (instead of build-time 'CC' etc.) [PR109951]"?
>
>
> Grüße
> Thomas
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>From 8b8654d04dcbb7f0a5947bc21efc5b9c60b3b6c6 Mon Sep 17 00:00:00 2001
From: Thomas Schwinge <tho...@codesourcery.com>
Date: Mon, 11 Sep 2023 10:50:00 +0200
Subject: [PATCH] libffi: Consider '--with-build-sysroot=[...]' for target
libraries' build-tree testing (instead of build-time 'CC' etc.) [PR109951]
Similar to commit fb5d27be272b71fb9026224535fc73f125ce3be7
"libgomp: Consider '--with-build-sysroot=[...]' for target libraries' build-tree testing (instead of build-time 'CC' etc.) [PR91884, PR109951]",
this is commit a0b48358cb1e70e161a87ec5deb7a4b25defba6b
"libffi/test: Fix compilation for build sysroot" done differently,
avoiding build-tree testing use of any random gunk that may appear in
build-time 'CC', 'CXX'.
PR testsuite/109951
libffi/
* configure.ac: 'AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)'.
<local.exp>: Don't set 'CC_FOR_TARGET', 'CXX_FOR_TARGET', instead
set 'SYSROOT_CFLAGS_FOR_TARGET'.
* Makefile.in: Regenerate.
* configure: Likewise.
* include/Makefile.in: Likewise.
* man/Makefile.in: Likewise.
* testsuite/Makefile.in: Likewise.
* testsuite/lib/libffi.exp (libffi_target_compile): If
'--with-build-sysroot=[...]' was specified, use it for build-tree
testing.
---
libffi/Makefile.in | 1 +
libffi/configure | 10 ++++++----
libffi/configure.ac | 5 +++--
libffi/include/Makefile.in | 1 +
libffi/man/Makefile.in | 1 +
libffi/testsuite/Makefile.in | 1 +
libffi/testsuite/lib/libffi.exp | 7 +++++++
7 files changed, 20 insertions(+), 6 deletions(-)
diff --git a/libffi/Makefile.in b/libffi/Makefile.in
index 1d936b5c8a5..3a55212cc00 100644
--- a/libffi/Makefile.in
+++ b/libffi/Makefile.in
@@ -383,6 +383,7 @@ SED = @SED@
SET_MAKE = @SET_MAKE@
SHELL = @SHELL@
STRIP = @STRIP@
+SYSROOT_CFLAGS_FOR_TARGET = @SYSROOT_CFLAGS_FOR_TARGET@
TARGET = @TARGET@
TARGETDIR = @TARGETDIR@
TARGET_OBJ = @TARGET_OBJ@
diff --git a/libffi/configure b/libffi/configure
index 9eac9c907bf..f1efd6987a3 100755
--- a/libffi/configure
+++ b/libffi/configure
@@ -666,6 +666,7 @@ TESTSUBDIR_TRUE
MAINT
MAINTAINER_MODE_FALSE
MAINTAINER_MODE_TRUE
+SYSROOT_CFLAGS_FOR_TARGET
READELF
CXXCPP
CPP
@@ -11634,7 +11635,7 @@ else
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
-#line 11637 "configure"
+#line 11638 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
@@ -11740,7 +11741,7 @@ else
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
-#line 11743 "configure"
+#line 11744 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
@@ -15137,9 +15138,10 @@ _ACEOF
+
+
cat > local.exp <<EOF
-set CC_FOR_TARGET "$CC"
-set CXX_FOR_TARGET "$CXX"
+set SYSROOT_CFLAGS_FOR_TARGET "$SYSROOT_CFLAGS_FOR_TARGET"
set compiler_vendor "$ax_cv_c_compiler_vendor"
EOF
diff --git a/libffi/configure.ac b/libffi/configure.ac
index 014d89d0423..0381d178f66 100644
--- a/libffi/configure.ac
+++ b/libffi/configure.ac
@@ -61,9 +61,10 @@ AC_CHECK_TOOL(READELF, readelf)
# Test for 64-bit build.
AC_CHECK_SIZEOF([size_t])
+AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
+
cat > local.exp <<EOF
-set CC_FOR_TARGET "$CC"
-set CXX_FOR_TARGET "$CXX"
+set SYSROOT_CFLAGS_FOR_TARGET "$SYSROOT_CFLAGS_FOR_TARGET"
set compiler_vendor "$ax_cv_c_compiler_vendor"
EOF
diff --git a/libffi/include/Makefile.in b/libffi/include/Makefile.in
index 879cb72296d..9759f0d91dc 100644
--- a/libffi/include/Makefile.in
+++ b/libffi/include/Makefile.in
@@ -255,6 +255,7 @@ SED = @SED@
SET_MAKE = @SET_MAKE@
SHELL = @SHELL@
STRIP = @STRIP@
+SYSROOT_CFLAGS_FOR_TARGET = @SYSROOT_CFLAGS_FOR_TARGET@
TARGET = @TARGET@
TARGETDIR = @TARGETDIR@
TARGET_OBJ = @TARGET_OBJ@
diff --git a/libffi/man/Makefile.in b/libffi/man/Makefile.in
index 9d4f96608c4..18de1e836f5 100644
--- a/libffi/man/Makefile.in
+++ b/libffi/man/Makefile.in
@@ -237,6 +237,7 @@ SED = @SED@
SET_MAKE = @SET_MAKE@
SHELL = @SHELL@
STRIP = @STRIP@
+SYSROOT_CFLAGS_FOR_TARGET = @SYSROOT_CFLAGS_FOR_TARGET@
TARGET = @TARGET@
TARGETDIR = @TARGETDIR@
TARGET_OBJ = @TARGET_OBJ@
diff --git a/libffi/testsuite/Makefile.in b/libffi/testsuite/Makefile.in
index a19b523e54a..27d48a7ad7a 100644
--- a/libffi/testsuite/Makefile.in
+++ b/libffi/testsuite/Makefile.in
@@ -210,6 +210,7 @@ SED = @SED@
SET_MAKE = @SET_MAKE@
SHELL = @SHELL@
STRIP = @STRIP@
+SYSROOT_CFLAGS_FOR_TARGET = @SYSROOT_CFLAGS_FOR_TARGET@
TARGET = @TARGET@
TARGETDIR = @TARGETDIR@
TARGET_OBJ = @TARGET_OBJ@
diff --git a/libffi/testsuite/lib/libffi.exp b/libffi/testsuite/lib/libffi.exp
index 15d3d5ebd73..6dc0bc1d77f 100644
--- a/libffi/testsuite/lib/libffi.exp
+++ b/libffi/testsuite/lib/libffi.exp
@@ -369,6 +369,13 @@ proc libffi_target_compile { source dest type options } {
lappend options "ldflags=$wrap_flags"
}
+ if { $blddirffi != "" } {
+ # If '--with-build-sysroot=[...]' was specified, use it for build-tree
+ # testing.
+ global SYSROOT_CFLAGS_FOR_TARGET
+ lappend options "additional_flags=${SYSROOT_CFLAGS_FOR_TARGET}"
+ }
+
# TOOL_OPTIONS must come first, so that it doesn't override testcase
# specific options.
if [info exists TOOL_OPTIONS] {
--
2.34.1
