From aed6c26fe4792e19f8ad99bef058f690fc2deecf Mon Sep 17 00:00:00 2001
From: Elliott Hughes <enh@google.com>
Date: Wed, 28 Oct 2020 16:48:14 -0700
Subject: Make it easier to switch regex implementations.

One reason to use toybox on the host is to get the same behavior across
Android/Linux/macOS. Unfortunately (as we've seen from a few bugs) one
area where that doesn't quite work is that toybox uses the libc regular
expression implementation. That's fine, and mostly what users want, but
those folks trying to get the exact same behavior everywhere might want
to switch in a known regex implementation (bionic's NetBSD regex
implementation, say) for increased consistency.

That actually works pretty well, but portability.h has an #ifndef test
for REG_STARTEND before including <regex.h> that gets in the way. To
make up for that, this patch removes the unnecessary #include <regex.h>
from grep.c itself.
---
 lib/portability.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'lib')

diff --git a/lib/portability.h b/lib/portability.h
index acc32fd4..05a449ee 100644
--- a/lib/portability.h
+++ b/lib/portability.h
@@ -6,6 +6,7 @@
 
 // For musl
 #define _ALL_SOURCE
+#include <regex.h>
 #ifndef REG_STARTEND
 #define REG_STARTEND 0
 #endif
-- 
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