apr: avoid absolute paths for grep
The apr provides usr/share/build-1/libtool which is required by
the recipe such as apache2, and it will find grep on the host
and set absolute paths in libtool: GREP="/usr/bin/grep"
If we build apr/apr-native on a host that grep is in "/usr/bin/grep",
and re-use the sstate on another host with "/bin/grep", it will fail
when build apache2/apache2-native with:
| tmp/sysroots/x86_64-linux/usr/share/build-1/libtool: line 1093: /usr/bin/grep: No such file or directory
| tmp/sysroots/intel-x86-64/usr/share/build-1/libtool: line 1093: /usr/bin/grep: No such file or directory
(From OE-Core rev:
475709fc4f32e1ed01f45ee44819cd24e739eb43)
Signed-off-by: Jackie Huang <jackie.huang@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
