# HG changeset patch
# User "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
# Date 1309180500 -7200
# Node ID ff2481a6e60f19b8d8fc32b3c5284c9fd3d8650b
# Parent  9cfca603f892a6f3b1b6274a9a3e6acb15f208bc
cc/gcc: add option for linker hash style

Add an option to specify the hash type that gcc will ask the linker to use.
It is a provision for the upcoming 4.7, as no version currently supports it.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

diff -r 9cfca603f892 -r ff2481a6e60f config/cc/gcc.in
--- a/config/cc/gcc.in	Mon Jun 27 13:52:15 2011 +0200
+++ b/config/cc/gcc.in	Mon Jun 27 15:15:00 2011 +0200
@@ -277,6 +277,11 @@
 config CC_GCC_HAS_BUILD_ID
     bool
 
+# For the upcoming 4.7 ?
+# None have linker-hash-style support for now...
+config CC_GCC_HAS_LNK_HASH_STYLE
+    bool
+
 # Only enable gcc's support for plugins if binutils has it as well
 # They are usefull only when doing LTO, but it does no harm enabling
 # them even without LTO.
diff -r 9cfca603f892 -r ff2481a6e60f config/cc/gcc.in.2
--- a/config/cc/gcc.in.2	Mon Jun 27 13:52:15 2011 +0200
+++ b/config/cc/gcc.in.2	Mon Jun 27 15:15:00 2011 +0200
@@ -211,3 +211,41 @@
       option is ignored.
       
       The default is off.
+
+choice CC_GCC_LNK_HASH_STYLE_CHOICE
+    bool
+    prompt "linker hash style"
+    depends on CC_GCC_HAS_LNK_HASH_STYLE
+
+config CC_GCC_LNK_HASH_STYLE_DEFAULT
+    bool
+    prompt "Default"
+    help
+      Do not specify any value, and use the default value (sysv).
+
+config CC_GCC_LNK_HASH_STYLE_SYSV
+    bool
+    prompt "sysv"
+    help
+      Force use of the SYSV hash style.
+
+config CC_GCC_LNK_HASH_STYLE_GNU
+    bool
+    prompt "gnu"
+    help
+      Force use of the GNU hash style.
+
+config CC_GCC_LNK_HASH_STYLE_BOTH
+    bool
+    prompt "both"
+    help
+      Force use of both hash styles.
+
+endchoice # CC_GCC_LNK_HASH_STYLE_CHOICE
+
+config CC_GCC_LNK_HASH_STYLE
+    string
+    default ""      if CC_GCC_LNK_HASH_STYLE_DEFAULT
+    default "sysv"  if CC_GCC_LNK_HASH_STYLE_SYSV
+    default "gnu"   if CC_GCC_LNK_HASH_STYLE_GNU
+    default "both"  if CC_GCC_LNK_HASH_STYLE_BOTH
diff -r 9cfca603f892 -r ff2481a6e60f scripts/build/cc/gcc.sh
--- a/scripts/build/cc/gcc.sh	Mon Jun 27 13:52:15 2011 +0200
+++ b/scripts/build/cc/gcc.sh	Mon Jun 27 15:15:00 2011 +0200
@@ -262,6 +262,11 @@
         extra_config+=( --enable-linker-build-id )
     fi
 
+    case "${CT_CC_GCC_LNK_HASH_STYLE}" in
+        "") ;;
+        *)  extra_config+=( "--with-linker-hash-style=${CT_CC_GCC_LNK_HASH_STYLE}" );;
+    esac
+
     CT_DoLog DEBUG "Extra config passed: '${extra_config[*]}'"
 
     # Use --with-local-prefix so older gccs don't look in /usr/local (http://gcc.gnu.org/PR10532)
@@ -534,6 +539,11 @@
         extra_config+=( --enable-linker-build-id )
     fi
 
+    case "${CT_CC_GCC_LNK_HASH_STYLE}" in
+        "") ;;
+        *)  extra_config+=( "--with-linker-hash-style=${CT_CC_GCC_LNK_HASH_STYLE}" );;
+    esac
+
     if [ "${CT_CC_GCC_ENABLE_PLUGINS}" = "y" ]; then
         extra_config+=( --enable-plugin )
     fi