From e9920217e875a18b0207d6a3e5f4df8a6bae58a9 Mon Sep 17 00:00:00 2001
From: Yann Diorcet <diorcet.yann@gmail.com>
Date: Thu, 22 Nov 2012 23:56:58 +0100
Subject: cc: add a flag for skipping core passes

It is used for skipping unnecessary compilation steps when the libc
doesn't need to be compiled (eg. when we do not use a C library).

Signed-off-by: Yann Diorcet <diorcet.yann@gmail.com>
Message-Id: <150eadb0117e697d79aa.1353625025@blackmint>
Patchwork-Id: 201222

diff --git a/config/cc.in b/config/cc.in
index 680afb9..d244e99 100644
--- a/config/cc.in
+++ b/config/cc.in
@@ -8,6 +8,9 @@ config CC
 config CC_VERSION
     string
 
+config CC_CORE_PASSES_NEEDED
+	bool
+
 source "config.gen/cc.in"
 
 config CC_SUPPORT_CXX
diff --git a/config/libc/eglibc.in b/config/libc/eglibc.in
index 586b234..4f6ed12 100644
--- a/config/libc/eglibc.in
+++ b/config/libc/eglibc.in
@@ -4,6 +4,7 @@
 ##
 ## select LIBC_SUPPORT_NPTL
 ## select LIBC_SUPPORT_LINUXTHREADS
+## select CC_CORE_PASSES_NEEDED
 ##
 ## help EGLIBC (Embedded GLIBC) is a variant of the standard GNU GLIBC
 ## help that is designed to work well on embedded systems.  EGLIBC strives
diff --git a/config/libc/glibc.in b/config/libc/glibc.in
index e65c22b..70780a3 100644
--- a/config/libc/glibc.in
+++ b/config/libc/glibc.in
@@ -3,6 +3,7 @@
 ## depends on ! WINDOWS && ! BARE_METAL && ARCH_USE_MMU
 ##
 ## select LIBC_SUPPORT_NPTL
+## select CC_CORE_PASSES_NEEDED
 ##
 ## help The de-facto standard for Linux distributions.
 ## help Feature-rich, but large...  Most usefull for desktop-like systems.
diff --git a/config/libc/mingw.in b/config/libc/mingw.in
index fddf1ed..7e27ae0 100644
--- a/config/libc/mingw.in
+++ b/config/libc/mingw.in
@@ -3,6 +3,7 @@
 ## depends on WINDOWS
 ##
 ## select LIBC_SUPPORT_WIN32THREADS
+## select CC_CORE_PASSES_NEEDED
 ##
 ## help The de-facto standard for Mingw distributions.
 
diff --git a/config/libc/newlib.in b/config/libc/newlib.in
index 8350fba..26eccd7 100644
--- a/config/libc/newlib.in
+++ b/config/libc/newlib.in
@@ -3,6 +3,7 @@
 ## depends on BARE_METAL
 ##
 ## select LIBC_SUPPORT_THREADS_NONE
+## select CC_CORE_PASSES_NEEDED
 ##
 ## help Newlib is a C library intended for use on embedded systems. It is a
 ## help conglomeration of several library parts, all under free software
diff --git a/config/libc/uClibc.in b/config/libc/uClibc.in
index dec99d1..2ca056b 100644
--- a/config/libc/uClibc.in
+++ b/config/libc/uClibc.in
@@ -4,6 +4,7 @@
 ##
 ## select LIBC_SUPPORT_LINUXTHREADS
 ## select LIBC_SUPPORT_THREADS_NONE
+## select CC_CORE_PASSES_NEEDED
 ##
 ## help The de-facto standard for embeded linux systems.
 ## help
diff --git a/scripts/build/cc/gcc.sh b/scripts/build/cc/gcc.sh
index d7ba606..36a1a90 100644
--- a/scripts/build/cc/gcc.sh
+++ b/scripts/build/cc/gcc.sh
@@ -83,6 +83,10 @@ cc_gcc_lang_list() {
 do_cc_core_pass_1() {
     local -a core_opts
 
+    if [ "${CT_CC_CORE_PASSES_NEEDED}" != "y" ]; then
+        return 0
+    fi
+
     core_opts+=( "mode=static" )
     core_opts+=( "host=${CT_BUILD}" )
     core_opts+=( "complibs=${CT_BUILDTOOLS_PREFIX_DIR}" )
@@ -104,6 +108,10 @@ do_cc_core_pass_1() {
 do_cc_core_pass_2() {
     local -a core_opts
 
+    if [ "${CT_CC_CORE_PASSES_NEEDED}" != "y" ]; then
+        return 0
+    fi
+
     # Common options:
     core_opts+=( "host=${CT_BUILD}" )
     core_opts+=( "prefix=${CT_BUILDTOOLS_PREFIX_DIR}" )
-- 
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