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Toolchain+Ports: Skip link tests for libstdc++v3

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This makes stdlib.h and stdio.h functions available in the std
namespace for C++.

libstdc++v3's link tests can fail if you don't have an up-to-date
build directory, for example:

1. Have libc with missing _Exit symbol because you haven't done
   a build since that was added.

2. Run toolchain rebuild. libstdc++v3's configure script will
   realize that it can do link tests in general but will fail
   later on when it tries to link a program that tests for _Exit.

Even though this is a toolchain patch this does not necessarily
require rebuilding the toolchain right away. This is only required
once we start using any of these new members in the std namespace,
e.g. for ports.
This commit is contained in:
Gunnar Beutner 2021-05-08 21:09:36 +02:00 committed by Andreas Kling
parent 9ffc2fe840
commit b223233b15
Notes: sideshowbarker 2024-07-18 18:27:03 +09:00 
Author: https://github.com/gunnarbeutner
Commit: https://github.com/SerenityOS/serenity/commit/b223233b150
Pull-request: https://github.com/SerenityOS/serenity/pull/6967
2 changed files with 40 additions and 0 deletions
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20
Ports/gcc/patches/gcc.patch
View file

@ -6297,3 +6297,23 @@ diff -Naur gcc-11.1.0-RC-20210420/libstdc++-v3/crossconfig.m4 gcc-11.1.0-RC-2021
arm*-*-symbianelf*)
# This is a freestanding configuration; there is nothing to do here.
;;
diff -Naur gcc-11.1.0/libstdc++-v3/configure gcc-11.1.0.serenity/libstdc++-v3/configure
--- gcc-11.1.0/libstdc++-v3/configure 2021-05-08 23:33:02.665399548 +0200
+++ gcc-11.1.0.serenity/libstdc++-v3/configure 2021-05-09 08:49:22.325309643 +0200
@@ -4219,15 +4219,7 @@
}
_ACEOF
# FIXME: Cleanup?
-if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
- (eval $ac_link) 2>&5
- ac_status=$?
- $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
- test $ac_status = 0; }; then :
- gcc_no_link=no
-else
- gcc_no_link=yes
-fi
+gcc_no_link=yes
if test x$gcc_no_link = xyes; then
# Setting cross_compile will disable run tests; it will
# also disable AC_CHECK_FILE but that's generally

20
Toolchain/Patches/gcc.patch
View file

@ -6297,3 +6297,23 @@ diff -Naur gcc-11.1.0-RC-20210420/libstdc++-v3/crossconfig.m4 gcc-11.1.0-RC-2021
arm*-*-symbianelf*)
# This is a freestanding configuration; there is nothing to do here.
;;
diff -Naur gcc-11.1.0/libstdc++-v3/configure gcc-11.1.0.serenity/libstdc++-v3/configure
--- gcc-11.1.0/libstdc++-v3/configure 2021-05-08 23:33:02.665399548 +0200
+++ gcc-11.1.0.serenity/libstdc++-v3/configure 2021-05-09 08:49:22.325309643 +0200
@@ -4219,15 +4219,7 @@
}
_ACEOF
# FIXME: Cleanup?
-if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
- (eval $ac_link) 2>&5
- ac_status=$?
- $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
- test $ac_status = 0; }; then :
- gcc_no_link=no
-else
- gcc_no_link=yes
-fi
+gcc_no_link=yes
if test x$gcc_no_link = xyes; then
# Setting cross_compile will disable run tests; it will
# also disable AC_CHECK_FILE but that's generally