X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=config%2Flyxinclude.m4;h=2f937339b2dc6c75cbc6b1a52b46dfdcda261af7;hb=1ffa302666f75c29bf5595be5597fc626ad443e0;hp=35344d78ad95e924485258eab31ac8c8de09a616;hpb=60c73c05a3de15ac17350a7c9a73388bd4cd4f89;p=lyx.git

diff --git a/config/lyxinclude.m4 b/config/lyxinclude.m4
index 35344d78ad..2f937339b2 100644
--- a/config/lyxinclude.m4
+++ b/config/lyxinclude.m4
@@ -156,6 +156,7 @@ fi
 AC_MSG_RESULT($CXX)
 
 AC_PROG_CXX
+AC_PROG_CXXCPP
 
 ### We might want to get or shut warnings.
 AC_ARG_ENABLE(warnings,
@@ -215,7 +216,7 @@ esac
 
 AC_ARG_ENABLE(pch,
   AC_HELP_STRING([--enable-pch],[enable precompiled headers]),,
-	enable_pch=yes;)
+	enable_pch=no;)
 lyx_pch_comp=no
 
 # set the compiler options correctly.