From 2c9f8d3885fbc3786086fbb39d4e3ef33c72b127 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=90=D0=BB=D0=B5=D0=BA=D1=81=D0=B5=D0=B9?=
 <alexey.pawlow@gmail.com>
Date: Thu, 17 Jun 2021 18:51:18 +0530
Subject: [PATCH 007/N] Add `PC/` to `CPPFLAGS` and to `SRCDIRS` on Mingw

Co-authored-by: Naveen M K <naveen521kk@gmail.com>
---
 configure.ac | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/configure.ac b/configure.ac
index 6914b14..aeb9928 100644
--- a/configure.ac
+++ b/configure.ac
@@ -6913,6 +6913,16 @@ do
   THREADHEADERS="$THREADHEADERS \$(srcdir)/$h"
 done
 
+case $host in
+  *-*-mingw*)
+    dnl Required for windows builds as Objects/exceptions.c require
+    dnl "errmap.h" from $srcdir/PC.
+    dnl Note we cannot use BASECPPFLAGS as autogenerated pyconfig.h
+    dnl has to be before customized located in ../PC.
+    CPPFLAGS="-I\$(srcdir)/PC $CPPFLAGS"
+    ;;
+esac
+
 AC_SUBST([SRCDIRS])
 SRCDIRS="\
   Modules \
@@ -6935,6 +6945,11 @@ SRCDIRS="\
   Python \
   Python/frozen_modules \
   Python/deepfreeze"
+
+case $host in
+  *-*-mingw*) SRCDIRS="$SRCDIRS PC";;
+esac
+
 AC_MSG_CHECKING([for build directories])
 for dir in $SRCDIRS; do
     if test ! -d $dir; then
