base.bbclass: Fix way to check ccache path

The previous code had 2 issues:
1. make hosttools/ccache always link to host's ccache (/usr/bin/ccache)
even we have one buildtools
2. make hosttools/gcc etc, link to host's gcc event we have one
buildtools when keyword ccache in buildtools's path, eg:
/mnt/ccache/bin/buildtools

This patch is for fix above issues.

(From OE-Core rev: f2f70bf8d93b33b65875828c0402a98e943f660a)

Signed-off-by: Changqing Li <changqing.li@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 1b7c81414cf252a7203d95703810a770184d7e4d)
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/meta/classes/base.bbclass b/meta/classes/base.bbclass
index 19604a4646..3cae577a0e 100644
--- a/meta/classes/base.bbclass
+++ b/meta/classes/base.bbclass
@@ -139,7 +139,7 @@ def setup_hosttools_dir(dest, toolsvar, d, fatal=True):
             # /usr/local/bin/ccache/gcc -> /usr/bin/ccache, then which(gcc)
             # would return /usr/local/bin/ccache/gcc, but what we need is
             # /usr/bin/gcc, this code can check and fix that.
-            if "ccache" in srctool:
+            if os.path.islink(srctool) and os.path.basename(os.readlink(srctool)) == 'ccache':
                 srctool = bb.utils.which(path, tool, executable=True, direction=1)
             if srctool:
                 os.symlink(srctool, desttool)