X-Git-Url: http://git.efficios.com/?p=babeltrace.git;a=blobdiff_plain;f=configure.ac;h=809abf3a4231ea335c963f6a26eea4ee600bf02e;hp=b21aa7ef3a4e7968f6fe20bb1eb7962f470356ec;hb=a4cd27919a902b4536537f20613263c29b36ac30;hpb=bc8f1fecf2a6943d7ddf5788c944dd401cba0ed5

diff --git a/configure.ac b/configure.ac
index b21aa7ef..809abf3a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -23,7 +23,20 @@ LT_INIT
 AC_PROG_YACC
 AC_PROG_LEX
 
-AC_DEFUN([AC_PROG_BISON], [AC_CHECK_PROGS(BISON, bison, bison)]) 
+if test ! -f "$srcdir/formats/ctf/metadata/ctf-parser.h"; then
+        if test x"$YACC" != "xbison -y"; then
+                AC_MSG_ERROR([[bison not found and is required when building from git.
+                Please install bison]])
+        fi
+fi
+
+if test ! -f "$srcdir/formats/ctf/metadata/ctf-lexer.c"; then
+        if test x"$LEX" != "xflex"; then
+                AC_MSG_ERROR([[flex not found and is required when building from git.
+                Please install flex]])
+        fi
+fi
+
 
 AM_PATH_GLIB_2_0(2.22.0, ,AC_MSG_ERROR([glib is required in order to compile BabelTrace - download it from ftp://ftp.gtk.org/pub/gtk]) , gmodule)