Signed-off-by: Morikazu Fumita <[email protected]>
---
meta/recipes-devtools/gcc/gcc-11.3.inc | 2 +
meta/recipes-devtools/gcc/gcc-runtime.inc | 8 +-
.../gcc/gcc/0005-optional-libstdc.patch | 118 ++++++++++++++++++
3 files changed, 122 insertions(+), 6 deletions(-)
create mode 100644 meta/recipes-devtools/gcc/gcc/0005-optional-libstdc.patch
diff --git a/meta/recipes-devtools/gcc/gcc-11.3.inc
b/meta/recipes-devtools/gcc/gcc-11.3.inc
index acbb43a25fb1..e6464d2f5489 100644
--- a/meta/recipes-devtools/gcc/gcc-11.3.inc
+++ b/meta/recipes-devtools/gcc/gcc-11.3.inc
@@ -65,6 +65,8 @@ SRC_URI = "\
file://0003-CVE-2021-42574.patch \
file://0004-CVE-2021-42574.patch \
file://0001-CVE-2021-46195.patch \
+ \
+ file://0005-optional-libstdc.patch \
"
SRC_URI[sha256sum] =
"b47cf2818691f5b1e21df2bb38c795fac2cfbd640ede2d0a5e1c89e338a3ac39"
diff --git a/meta/recipes-devtools/gcc/gcc-runtime.inc b/meta/recipes-devtools/gcc/gcc-runtime.inc
index e9f2cf16e840..d2bdfa99db42 100644
--- a/meta/recipes-devtools/gcc/gcc-runtime.inc
+++ b/meta/recipes-devtools/gcc/gcc-runtime.inc
@@ -64,11 +64,7 @@ DEBUG_PREFIX_MAP:class-target = " \
"
do_configure () {
- export CXX="${CXX} -nostdinc++ -L${WORKDIR}/dummylib"
- # libstdc++ isn't built yet so CXX would error not able to find it
which breaks stdc++'s configure
- # tests. Create a dummy empty lib for the purposes of configure.
- mkdir -p ${WORKDIR}/dummylib
- touch ${WORKDIR}/dummylib/libstdc++.so
+ export CXX="${CXX} -nostdinc++ -nostdlib++"
for d in libgcc ${RUNTIMETARGET}; do
echo "Configuring $d"
rm -rf ${B}/${TARGET_SYS}/$d/
@@ -306,7 +302,7 @@ do_check() {
export DEJAGNU="${WORKDIR}/dejagnu/site.exp"
# HACK: this works around the configure setting CXX with -nostd* args
- sed -i 's#-nostdinc++ -L${WORKDIR}/dummylib##g' $(find ${B} -name
testsuite_flags | head -1)
+ sed -i 's/-nostdinc++ -nostdlib++//g' $(find ${B} -name testsuite_flags |
head -1)
if [ "${TOOLCHAIN_TEST_TARGET}" = "user" ]; then
# qemu user has issues allocating large amounts of memory
diff --git a/meta/recipes-devtools/gcc/gcc/0005-optional-libstdc.patch
b/meta/recipes-devtools/gcc/gcc/0005-optional-libstdc.patch
new file mode 100644
index 000000000000..b856c5dea367
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc/0005-optional-libstdc.patch
@@ -0,0 +1,118 @@
+From: Richard Purdie <[email protected]>
+Subject: [PATCH 3/5] gcc: Add --nostdlib++ option
+
+[gcc-runtime builds libstdc++ separately from gcc-cross-*. Its configure tests
using g++
+will not run correctly since by default the linker will try to link against
libstdc++
+which shouldn't exist yet. We need an option to disable -lstdc++
+option whilst leaving -lc, -lgcc and other automatic library dependencies
added by gcc
+driver. This patch adds such an option which only disables the -lstdc++.]
+
+[A "standard" gcc build uses xgcc and hence avoids this. We should ask
upstream how to
+do this officially, the likely answer is don't build libstdc++ separately.]
+
+OpenEmbedded/Yocto Project builds libgcc and the other gcc runtime libraries
+separately from the compiler and slightly differently to the standard gcc
build.
+
+In general this works well but in trying to build them separately we run into
+an issue since we're using our gcc, not xgcc and there is no way to tell
configure
+to use libgcc but not look for libstdc++.
+
+This adds such an option allowing such configurations to work.
+
+2021-10-26 Richard Purdie <[email protected]>
+
+gcc/c-family/ChangeLog:
+
+ * c.opt: Add --nostdlib++ option
+
+gcc/cp/ChangeLog:
+
+ * g++spec.c (lang_specific_driver): Add --nostdlib++ option
+
+gcc/ChangeLog:
+
+ * doc/invoke.texi: Document --nostdlib++ option
+ * gcc.c: Add --nostdlib++ option
+
+Signed-off-by: Richard Purdie <[email protected]>
+
+Upstream-Status: Submitted
[https://gcc.gnu.org/pipermail/gcc-patches/2021-October/582724.html]
+---
+ gcc/c-family/c.opt | 4 ++++
+ gcc/cp/g++spec.c | 1 +
+ gcc/doc/invoke.texi | 8 +++++++-
+ gcc/gcc.c | 1 +
+ 4 files changed, 13 insertions(+), 1 deletion(-)
+
+Index: gcc-11.2.0/gcc/c-family/c.opt
+===================================================================
+--- gcc-11.2.0.orig/gcc/c-family/c.opt
++++ gcc-11.2.0/gcc/c-family/c.opt
+@@ -2153,6 +2153,10 @@ nostdinc++
+ C++ ObjC++
+ Do not search standard system include directories for C++.
+
++nostdlib++
++Driver
++Do not link standard C++ runtime library
++
+ o
+ C ObjC C++ ObjC++ Joined Separate
+ ; Documented in common.opt
+Index: gcc-11.2.0/gcc/cp/g++spec.c
+===================================================================
+--- gcc-11.2.0.orig/gcc/cp/g++spec.c
++++ gcc-11.2.0/gcc/cp/g++spec.c
+@@ -159,6 +159,7 @@ lang_specific_driver (struct cl_decoded_
+ switch (decoded_options[i].opt_index)
+ {
+ case OPT_nostdlib:
++ case OPT_nostdlib__:
+ case OPT_nodefaultlibs:
+ library = -1;
+ break;
+Index: gcc-11.2.0/gcc/doc/invoke.texi
+===================================================================
+--- gcc-11.2.0.orig/gcc/doc/invoke.texi
++++ gcc-11.2.0/gcc/doc/invoke.texi
+@@ -239,6 +239,7 @@ in the following sections.
+ -fno-weak -nostdinc++ @gol
+ -fvisibility-inlines-hidden @gol
+ -fvisibility-ms-compat @gol
++-nostdlib++ @gol
+ -fext-numeric-literals @gol
+ -flang-info-include-translate@r{[}=@var{header}@r{]} @gol
+ -flang-info-include-translate-not @gol
+@@ -632,7 +633,7 @@ Objective-C and Objective-C++ Dialects}.
+ -pie -pthread -r -rdynamic @gol
+ -s -static -static-pie -static-libgcc -static-libstdc++ @gol
+ -static-libasan -static-libtsan -static-liblsan -static-libubsan @gol
+--shared -shared-libgcc -symbolic @gol
++-shared -shared-libgcc -symbolic -nostdlib++ @gol
+ -T @var{script} -Wl,@var{option} -Xlinker @var{option} @gol
+ -u @var{symbol} -z @var{keyword}}
+
+@@ -15721,6 +15722,11 @@ Specify that the program entry point is
+ interpreted by the linker; the GNU linker accepts either a symbol name
+ or an address.
+
++@item -nostdlib++
++@opindex nostdlib++
++Do not use the standard system C++ runtime libraries when linking.
++Only the libraries you specify will be passed to the linker.
++
+ @item -pie
+ @opindex pie
+ Produce a dynamically linked position independent executable on targets
+Index: gcc-11.2.0/gcc/gcc.c
+===================================================================
+--- gcc-11.2.0.orig/gcc/gcc.c
++++ gcc-11.2.0/gcc/gcc.c
+@@ -1162,6 +1162,7 @@ proper position among the other output f
+ %(mflib) " STACK_SPLIT_SPEC "\
+ %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} " SANITIZER_SPEC " \
+ %{!nostdlib:%{!r:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}}\
++ %{!nostdlib++:}\
+ %{!nostdlib:%{!r:%{!nostartfiles:%E}}} %{T*} \n%(post_link) }}}}}}"
+ #endif
+
--
2.25.1
