From 91a1ee8637640ba1e754f15c0b6fc9eab8e3d936 Mon Sep 17 00:00:00 2001
From: Vadim Zeitlin <vadim@wxwidgets.org>
Date: Mon, 31 Oct 2005 19:59:52 +0000
Subject: [PATCH] disable PCH under cygwin, it doesn't work even with the very
 latest cygwin gcc

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@36045 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---
 build/aclocal/bakefile.m4 | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/build/aclocal/bakefile.m4 b/build/aclocal/bakefile.m4
index 0516430..7808e65 100644
--- a/build/aclocal/bakefile.m4
+++ b/build/aclocal/bakefile.m4
@@ -650,6 +650,15 @@ AC_DEFUN([AC_BAKEFILE_PRECOMP_HEADERS],
 
     GCC_PCH=0
 
+    case ${BAKEFILE_HOST} in 
+        *-*-cygwin* )
+            dnl PCH support is broken in cygwin gcc because of unportable
+            dnl assumptions about mmap() in gcc code which make PCH generation
+            dnl fail erratically; disable PCH completely until this is fixed
+            bk_use_pch="no"
+            ;;
+    esac
+
     if test "x$bk_use_pch" = "x" -o "x$bk_use_pch" = "xyes" ; then
         if test "x$GCC" = "xyes"; then
             dnl test if we have gcc-3.4:
-- 
2.7.4