3 files changed, 6 insertions, 121 deletions

diff --git a/meta/recipes-devtools/gcc/gcc-11.2.inc b/meta/recipes-devtools/gcc/gcc-11.2.inc
index f07a5be507..a62f272d3c 100644
--- a/meta/recipes-devtools/gcc/gcc-11.2.inc
+++ b/meta/recipes-devtools/gcc/gcc-11.2.inc
@@ -33,7 +33,6 @@ SRC_URI = "\
            file://0001-gcc-4.3.1-ARCH_FLAGS_FOR_TARGET.patch \
            file://0002-gcc-poison-system-directories.patch \
            file://0004-64-bit-multilib-hack.patch \
-           file://0005-optional-libstdc.patch \
            file://0007-Use-the-defaults.h-in-B-instead-of-S-and-t-oe-in-B.patch \
            file://0009-cpp-honor-sysroot.patch \
            file://0011-Define-GLIBC_DYNAMIC_LINKER-and-UCLIBC_DYNAMIC_LINKE.patch \
diff --git a/meta/recipes-devtools/gcc/gcc-runtime.inc b/meta/recipes-devtools/gcc/gcc-runtime.inc
index 4839a6687a..c39a0caf8a 100644
--- a/meta/recipes-devtools/gcc/gcc-runtime.inc
+++ b/meta/recipes-devtools/gcc/gcc-runtime.inc
@@ -64,7 +64,11 @@ DEBUG_PREFIX_MAP:class-target = " \
    "
 
 do_configure () {
-        export CXX="${CXX} -nostdinc++ -nostdlib++"
+        export CXX="${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
         for d in libgcc ${RUNTIMETARGET}; do
                 echo "Configuring $d"
                 rm -rf ${B}/${TARGET_SYS}/$d/
@@ -302,7 +306,7 @@ do_check() {
     export DEJAGNU="${WORKDIR}/dejagnu/site.exp"
 
     # HACK: this works around the configure setting CXX with -nostd* args
-    sed -i 's/-nostdinc++ -nostdlib++//g' $(find ${B} -name testsuite_flags | head -1)
+    sed -i 's#-nostdinc++ -L${WORKDIR}/dummylib##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
deleted file mode 100644
index b856c5dea3..0000000000
--- a/meta/recipes-devtools/gcc/gcc/0005-optional-libstdc.patch
+++ /dev/null
@@ -1,118 +0,0 @@
-From: Richard Purdie <richard.purdie@linuxfoundation.org>
-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 <richard.purdie@linuxfoundation.org>
-
-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 <richard.purdie@linuxfoundation.org>
-
-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
-