libtool: avoid running automake/autoconf --version

The libtool would be very slow if run "automake/autoconf --version", for
example, when compile xz-native (make -j1, only compile, no confiure or
install):

before patched: 19s
after patched:  11s

Use plain text to instead of running them.

NOTE: it is still a little slower than libtool 2.4.2 when compile
xz-native because of other parts:
make -j1: about 2s slower
make -j32: about 0.4s slower

If we run to do_install:
(PARALLEL_MAKE = "-j32")
libtool 2.4.2:
$ bitbake xz-native -cinstall && bitbake xz-native -ccleansstate && time bitbake xz-native -cinstall
real    0m21.092s
user    0m28.292s
sys     0m3.932s

libtool 2.4.5:
$ bitbake xz-native -cinstall && bitbake xz-native -ccleansstate && time bitbake xz-native -cinstall
real    0m21.380s
user    0m31.140s
sys     0m4.068s

About 0.3s, slightly different.

But when using /bin/bash as CONFIG_SHELL, the new libtool would be much slower:
real    0m23.106s
user    0m44.044s
sys     0m4.280s

About 2s slower, for the big package like cairo, it is more slower (about 6s),
unfortunately, /bin/bash is most default CONFIG_SHELL for the recipes since
configure checks first check bash.

(From OE-Core rev: eb9d896db2fc67bac8efd258744d06fbbee87f06)

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 55 insertions, 0 deletions

diff --git a/meta/recipes-devtools/libtool/libtool-2.4.5.inc b/meta/recipes-devtools/libtool/libtool-2.4.5.inc
index 5b222504af..5ac6a78e34 100644
--- a/meta/recipes-devtools/libtool/libtool-2.4.5.inc
+++ b/meta/recipes-devtools/libtool/libtool-2.4.5.inc
@@ -18,6 +18,7 @@ SRC_URI = "${GNU_MIRROR}/libtool/libtool-${PV}.tar.gz \
            file://dont-depend-on-help2man.patch \
            file://fix-resolve-lt-sysroot.patch \
            file://nohardcodepaths.patch \
+           file://avoid-running-automake-autoconf-version.patch \
           "
 
 SRC_URI[md5sum] = "7d30ed9fa6bb11270ebb31639a37bd54"
diff --git a/meta/recipes-devtools/libtool/libtool/avoid-running-automake-autoconf-version.patch b/meta/recipes-devtools/libtool/libtool/avoid-running-automake-autoconf-version.patch
new file mode 100644
index 0000000000..ac2d370db4
--- /dev/null
+++ b/meta/recipes-devtools/libtool/libtool/avoid-running-automake-autoconf-version.patch
@@ -0,0 +1,54 @@
+From 7d3b0331d91a9f80bc4bcddea929a93b07b8ef91 Mon Sep 17 00:00:00 2001
+From: Robert Yang <liezhi.yang@windriver.com>
+Date: Wed, 4 Feb 2015 17:14:46 -0800
+Subject: [PATCH] avoid running automake/autoconf --version
+
+The libtool would be very slow if run "automake/autoconf --version", for
+example, when compile xz (make -j1):
+
+before patched: 19s
+after patched:  11s
+
+Use plain text to instead of running them.
+
+Upstream-Status: Pending [Report to libtool community]
+
+Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
+---
+ build-aux/ltmain.in |    4 ++--
+ libtoolize.in       |    4 ++--
+ 2 files changed, 4 insertions(+), 4 deletions(-)
+
+diff --git a/build-aux/ltmain.in b/build-aux/ltmain.in
+index 0441e48..49cd39a 100644
+--- a/build-aux/ltmain.in
++++ b/build-aux/ltmain.in
+@@ -152,8 +152,8 @@ include the following information:
+        compiler flags: $LTCFLAGS
+        linker:         $LD (gnu? $with_gnu_ld)
+        version:        $progname (GNU @PACKAGE@) @VERSION@
+-       automake:       `($AUTOMAKE --version) 2>/dev/null |$SED 1q`
+-       autoconf:       `($AUTOCONF --version) 2>/dev/null |$SED 1q`
++       automake:       run $AUTOMAKE --version
++       autoconf:       run $AUTOCONF --version
+ 
+ Report bugs to <@PACKAGE_BUGREPORT@>.
+ GNU @PACKAGE@ home page: <@PACKAGE_URL@>.
+diff --git a/libtoolize.in b/libtoolize.in
+index 684d799..e57c89b 100644
+--- a/libtoolize.in
++++ b/libtoolize.in
+@@ -115,8 +115,8 @@ include the following information:
+ 
+        host-triplet:   @host_triplet@
+        version:        $progname (GNU @PACKAGE@) @VERSION@
+-       automake:       `($AUTOMAKE --version) 2>/dev/null |$SED 1q`
+-       autoconf:       `($AUTOCONF --version) 2>/dev/null |$SED 1q`
++       automake:       run $AUTOMAKE --version
++       autoconf:       run $AUTOCONF --version
+ 
+ Report bugs to <@PACKAGE_BUGREPORT@>.
+ GNU @PACKAGE@ home page: <@PACKAGE_URL@>.
+-- 
+1.7.9.5
+