[OE-core] [PATCH 4/4] grep: do_configure: fix "Argument list too long"

[Robert Yang]

Fixed when len(TMPDIR) = 410:
aclocal: error: cannot open echo 'm4_define [snip]' configure.ac |: Argument list too long'

This is becuase it has a lot of m4 files, use relative path for them
can fix the problem.

Signed-off-by: Robert Yang <liezhi.yang at windriver.com>
---
 meta/recipes-extended/grep/grep_3.0.bb | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/meta/recipes-extended/grep/grep_3.0.bb b/meta/recipes-extended/grep/grep_3.0.bb
index 6146ef0..b2940d5 100644
--- a/meta/recipes-extended/grep/grep_3.0.bb
+++ b/meta/recipes-extended/grep/grep_3.0.bb
@@ -16,6 +16,9 @@ inherit autotools gettext texinfo pkgconfig
 
 EXTRA_OECONF = "--disable-perl-regexp"
 
+# Fix "Argument list too long" error when len(TMPDIR) = 410
+acpaths = "-I ./m4"
+
 do_configure_prepend () {
 	rm -f ${S}/m4/init.m4
 }
-- 
2.10.2