lkml.org 
[lkml]   [2014]   [Feb]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[tip:x86/asmlinkage] Kbuild, lto: add ld-version and ld-ifversion macros
Commit-ID:  ccbef1674a1579842c7dbdf554efca85d2cd245a
Gitweb: http://git.kernel.org/tip/ccbef1674a1579842c7dbdf554efca85d2cd245a
Author: Andi Kleen <ak@linux.intel.com>
AuthorDate: Sat, 8 Feb 2014 09:01:13 +0100
Committer: H. Peter Anvin <hpa@linux.intel.com>
CommitDate: Thu, 13 Feb 2014 20:25:00 -0800

Kbuild, lto: add ld-version and ld-ifversion macros

To check the linker version. Used by the LTO makefile.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Link: http://lkml.kernel.org/r/1391846481-31491-9-git-send-email-ak@linux.intel.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
---
scripts/Kbuild.include | 9 +++++++++
scripts/ld-version.sh | 8 ++++++++
2 files changed, 17 insertions(+)

diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include
index 547e15d..93a0da2 100644
--- a/scripts/Kbuild.include
+++ b/scripts/Kbuild.include
@@ -155,6 +155,15 @@ ld-option = $(call try-run,\
# Important: no spaces around options
ar-option = $(call try-run, $(AR) rc$(1) "$$TMP",$(1),$(2))

+# ld-version
+# Usage: $(call ld-version)
+# Note this is mainly for HJ Lu's 3 number binutil versions
+ld-version = $(shell $(LD) --version | $(srctree)/scripts/ld-version.sh)
+
+# ld-ifversion
+# Usage: $(call ld-ifversion, -ge, 22252, y)
+ld-ifversion = $(shell [ $(call ld-version) $(1) $(2) ] && echo $(3))
+
######

###
diff --git a/scripts/ld-version.sh b/scripts/ld-version.sh
new file mode 100755
index 0000000..198580d
--- /dev/null
+++ b/scripts/ld-version.sh
@@ -0,0 +1,8 @@
+#!/usr/bin/awk -f
+# extract linker version number from stdin and turn into single number
+ {
+ gsub(".*)", "");
+ split($1,a, ".");
+ print a[1]*10000000 + a[2]*100000 + a[3]*10000 + a[4]*100 + a[5];
+ exit
+ }

\
 
 \ /
  Last update: 2014-02-14 06:21    [W:0.231 / U:1.308 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site