From 9039e728b2015b54dc87da52f450c27683303392 Mon Sep 17 00:00:00 2001
From: John Wiegley <johnw@newartisans.com>
Date: Mon, 23 Apr 2007 21:22:24 +0000
Subject: All system headers (except Boost) now included through system.hh;
 also, added support for pre-compiled headers since I'm now using a
 centralized resource for system headers.

---
 configure.in | 25 +++++++++++++++++--------
 1 file changed, 17 insertions(+), 8 deletions(-)

(limited to 'configure.in')

diff --git a/configure.in b/configure.in
index 8bb6247f..1ff68b20 100644
--- a/configure.in
+++ b/configure.in
@@ -17,14 +17,13 @@ AC_PROG_MAKE_SET
 AC_PROG_LIBTOOL
 AM_PROG_LIBTOOL
 
-AC_PROG_YACC
-
-AC_PROG_LEX
-if test "$LEX" != flex; then
-  LEX="$SHELL $missing_dir/missing flex"
-  AC_SUBST(LEX_OUTPUT_ROOT, lex.yy)
-  AC_SUBST(LEXLIB, '')
-fi
+#AC_PROG_YACC
+#AC_PROG_LEX
+#if test "$LEX" != flex; then
+#  LEX="$SHELL $missing_dir/missing flex"
+#  AC_SUBST(LEX_OUTPUT_ROOT, lex.yy)
+#  AC_SUBST(LEXLIB, '')
+#fi
 
 # Checks for emacs lisp path
 AM_PATH_LISPDIR
@@ -317,6 +316,16 @@ AC_ARG_ENABLE(debug,
 
 AM_CONDITIONAL(DEBUG, test x$debug = xtrue)
 
+AC_ARG_ENABLE(pch,
+  [  --enable-pch            Use GCC 4.x pre-compiled headers],
+  [case "${enableval}" in
+    yes) pch=true ;;
+    no)  pch=false ;;
+    *) AC_MSG_ERROR(bad value ${enableval} for --enable-pch) ;;
+  esac],[pch=true])
+
+AM_CONDITIONAL(USE_PCH, test x$pch = xtrue)
+
 # Checks for header files.
 AC_STDC_HEADERS
 AC_HAVE_HEADERS(sys/stat.h langinfo.h)
-- 
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