From d86ceecf2141e684364d31c28941c6aacfbba47a Mon Sep 17 00:00:00 2001
From: Trent Nelson <trent@trent.me>
Date: Tue, 16 Oct 2012 09:42:45 -0400
Subject: Issue #15819: additional fixes for out-of-tree builds from read-only
 src.

Unlike 3.2, 3.3 and 3.x, which add "-IObjects -IPython -IInclude" to
BASECPPFLAGS when building out-of-tree, 2.7 only needs to add -IInclude
(for Python-ast.h and graminit.h).
---
 Makefile.pre.in |  1 +
 configure       | 18 ++++++++++++++++++
 configure.ac    | 16 ++++++++++++++++
 3 files changed, 35 insertions(+)

diff --git a/Makefile.pre.in b/Makefile.pre.in
index 2bb6844..91b2b5a 100644
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -27,6 +27,7 @@ MODLIBS=        _MODLIBS_
 VERSION=	@VERSION@
 srcdir=		@srcdir@
 VPATH=		@srcdir@
+BUILDDIR=	@BUILDDIR@
 
 CC=		@CC@
 CXX=		@CXX@
diff --git a/configure b/configure
index bced441..f2304f6 100755
--- a/configure
+++ b/configure
@@ -648,6 +648,8 @@ HAS_HG
 HGBRANCH
 HGTAG
 HGVERSION
+BASECPPFLAGS
+BUILDDIR
 SVNVERSION
 ARFLAGS
 AR
@@ -5175,6 +5177,22 @@ else
 	SVNVERSION="echo Unversioned directory"
 fi
 
+BUILDDIR="`pwd`"
+
+
+if test "$srcdir" != "$BUILDDIR"; then
+    # If we're building out-of-tree make sure Include (in the current dir)
+    # gets picked up before its $srcdir counterpart in order for Python-ast.h
+    # and graminit.h to get picked up from the correct directory.
+    # (A side effect of this is that these resources will automatically be
+    #  regenerated when building out-of-tree, regardless of whether or not
+    #  the $srcdir counterpart is up-to-date.  This is an acceptable trade
+    #  off.)
+    BASECPPFLAGS="-IInclude"
+else
+    BASECPPFLAGS=""
+fi
+
 
 
 
diff --git a/configure.ac b/configure.ac
index ec7538c..094e5a4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -854,6 +854,22 @@ else
 	SVNVERSION="echo Unversioned directory"
 fi
 
+BUILDDIR="`pwd`"
+AC_SUBST(BUILDDIR)
+AC_SUBST(BASECPPFLAGS)
+if test "$srcdir" != "$BUILDDIR"; then
+    # If we're building out-of-tree make sure Include (in the current dir)
+    # gets picked up before its $srcdir counterpart in order for Python-ast.h
+    # and graminit.h to get picked up from the correct directory.
+    # (A side effect of this is that these resources will automatically be
+    #  regenerated when building out-of-tree, regardless of whether or not
+    #  the $srcdir counterpart is up-to-date.  This is an acceptable trade
+    #  off.)
+    BASECPPFLAGS="-IInclude"
+else
+    BASECPPFLAGS=""
+fi
+
 AC_SUBST(HGVERSION)
 AC_SUBST(HGTAG)
 AC_SUBST(HGBRANCH)
-- 
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