(From OE-Core rev: 16ab55220c4b602a8406c7a4405c737caae5907b) Signed-off-by: Elvis Dowson <elvis.dowson@gmail.com> Signed-off-by: Khem Raj <raj.khem@gmail.com> Signed-off-by: Saul Wold <sgw@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
103 lines
3.6 KiB
Diff
103 lines
3.6 KiB
Diff
From 307c8ff3ef666b7bd5ac733863f2fbb27a9d521e Mon Sep 17 00:00:00 2001
|
|
From: Khem Raj <raj.khem@gmail.com>
|
|
Date: Fri, 29 Mar 2013 09:12:56 +0400
|
|
Subject: [PATCH 20/35] optional libstdc
|
|
|
|
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.
|
|
|
|
RP 29/6/10
|
|
|
|
Signed-off-by: Khem Raj <raj.khem@gmail.com>
|
|
|
|
Upstream-Status: Inappropriate [embedded specific]
|
|
---
|
|
gcc/c-family/c.opt | 4 ++++
|
|
gcc/cp/g++spec.c | 1 +
|
|
gcc/doc/invoke.texi | 9 +++++++--
|
|
gcc/gcc.c | 1 +
|
|
4 files changed, 13 insertions(+), 2 deletions(-)
|
|
|
|
diff --git a/gcc/c-family/c.opt b/gcc/c-family/c.opt
|
|
index 10ae84d..dc3ffdf 100644
|
|
--- a/gcc/c-family/c.opt
|
|
+++ b/gcc/c-family/c.opt
|
|
@@ -1299,6 +1299,10 @@ 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
|
|
diff --git a/gcc/cp/g++spec.c b/gcc/cp/g++spec.c
|
|
index b896eea..f55216b 100644
|
|
--- a/gcc/cp/g++spec.c
|
|
+++ b/gcc/cp/g++spec.c
|
|
@@ -126,6 +126,7 @@ lang_specific_driver (struct cl_decoded_option **in_decoded_options,
|
|
switch (decoded_options[i].opt_index)
|
|
{
|
|
case OPT_nostdlib:
|
|
+ case OPT_nostdlib__:
|
|
case OPT_nodefaultlibs:
|
|
library = -1;
|
|
break;
|
|
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
|
|
index a022622..f15c991 100644
|
|
--- a/gcc/doc/invoke.texi
|
|
+++ b/gcc/doc/invoke.texi
|
|
@@ -190,7 +190,7 @@ in the following sections.
|
|
-frepo -fno-rtti -fstats -ftemplate-backtrace-limit=@var{n} @gol
|
|
-ftemplate-depth=@var{n} @gol
|
|
-fno-threadsafe-statics -fuse-cxa-atexit -fno-weak -nostdinc++ @gol
|
|
--fno-default-inline -fvisibility-inlines-hidden @gol
|
|
+-nostdlib++ -fno-default-inline -fvisibility-inlines-hidden @gol
|
|
-fvisibility-ms-compat @gol
|
|
-fext-numeric-literals @gol
|
|
-Wabi -Wconversion-null -Wctor-dtor-privacy @gol
|
|
@@ -453,7 +453,7 @@ Objective-C and Objective-C++ Dialects}.
|
|
-nostartfiles -nodefaultlibs -nostdlib -pie -rdynamic @gol
|
|
-s -static -static-libgcc -static-libstdc++ @gol
|
|
-static-libasan -static-libtsan @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}}
|
|
|
|
@@ -9886,6 +9886,11 @@ These entries are usually resolved by entries in
|
|
libc. These entry points should be supplied through some other
|
|
mechanism when this option is specified.
|
|
|
|
+@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.
|
|
+
|
|
@cindex @option{-lgcc}, use with @option{-nostdlib}
|
|
@cindex @option{-nostdlib} and unresolved references
|
|
@cindex unresolved references and @option{-nostdlib}
|
|
diff --git a/gcc/gcc.c b/gcc/gcc.c
|
|
index efdb625..477752f 100644
|
|
--- a/gcc/gcc.c
|
|
+++ b/gcc/gcc.c
|
|
@@ -748,6 +748,7 @@ proper position among the other output files. */
|
|
%(mflib) " STACK_SPLIT_SPEC "\
|
|
%{fprofile-arcs|fprofile-generate*|coverage:-lgcov} " SANITIZER_SPEC " \
|
|
%{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
|
|
+ %{!nostdlib++:}\
|
|
%{!nostdlib:%{!nostartfiles:%E}} %{T*} }}}}}}"
|
|
#endif
|
|
|
|
--
|
|
1.7.10.4
|
|
|