X-Git-Url: http://git.efficios.com/?p=babeltrace.git;a=blobdiff_plain;f=configure.ac;h=2b9cc0de5deadca83a22446cee0ee97c2ac91c38;hp=a22b1b93a4cea225c228e61df84af070792fee8f;hb=331d78f54d4f200729a7e67feaff36cda9bf03e5;hpb=9d1e7de0dd0572e8071e0bd620c1c569e8b5396b

diff --git a/configure.ac b/configure.ac
index a22b1b93..2b9cc0de 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)