From 25fe66f84cea9c2e0a7f6b53180542784b94485a Mon Sep 17 00:00:00 2001
From: Markus Duft <mduft@gentoo.org>
Date: Wed, 27 Oct 2010 10:39:53 +0200
Subject: Interix: add configure checks

 * check for sys/poll.h. define NO_SYS_POLL_H otherwise.
 * check for inttypes.h, define NO_INTTYPES_H otherwise.
 * check for initgroups(), define NO_INITGROUPS otherwise.

Signed-off-by: Markus Duft <mduft@gentoo.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/configure.ac b/configure.ac
index cc55b6d..c5bc9a0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -617,6 +617,18 @@ AC_CHECK_HEADER([sys/select.h],
 [NO_SYS_SELECT_H=UnfortunatelyYes])
 AC_SUBST(NO_SYS_SELECT_H)
 #
+# Define NO_SYS_POLL_H if you don't have sys/poll.h
+AC_CHECK_HEADER([sys/poll.h],
+[NO_SYS_POLL_H=],
+[NO_SYS_POLL_H=UnfortunatelyYes])
+AC_SUBST(NO_SYS_POLL_H)
+#
+# Define NO_INTTYPES_H if you don't have inttypes.h
+AC_CHECK_HEADER([inttypes.h],
+[NO_INTTYPES_H=],
+[NO_INTTYPES_H=UnfortunatelyYes])
+AC_SUBST(NO_INTTYPES_H)
+#
 # Define OLD_ICONV if your library has an old iconv(), where the second
 # (input buffer pointer) parameter is declared with type (const char **).
 AC_DEFUN([OLDICONVTEST_SRC], [[
@@ -868,6 +880,12 @@ GIT_CHECK_FUNC(mkstemps,
 [NO_MKSTEMPS=YesPlease])
 AC_SUBST(NO_MKSTEMPS)
 #
+# Define NO_INITGROUPS if you don't have initgroups in the C library.
+GIT_CHECK_FUNC(initgroups,
+[NO_INITGROUPS=],
+[NO_INITGROUPS=YesPlease])
+AC_SUBST(NO_INITGROUPS)
+#
 #
 # Define NO_MMAP if you want to avoid mmap.
 #
-- 
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