X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/324a5576515921a9c41913833cacde6dadee303a..ebbc76d0d7ff5f35af1a8d9b027037d8c70f0bbb:/configure.ac

diff --git a/configure.ac b/configure.ac
index 651fa139..83e20acb 100644
--- a/configure.ac
+++ b/configure.ac
@@ -114,6 +114,7 @@ fi
 
 BISON_TEST_FOR_WORKING_C_COMPILER
 BISON_TEST_FOR_WORKING_CXX_COMPILER
+BISON_C_COMPILER_POSIXLY_CORRECT
 
 AC_ARG_ENABLE([yacc],
   [AC_HELP_STRING([--disable-yacc],
@@ -131,6 +132,7 @@ AC_SUBST([YACC_SCRIPT])
 AC_SUBST([YACC_LIBRARY])
 
 # Checks for programs.
+AM_MISSING_PROG([DOT], [dot])
 AC_PROG_LEX
 $LEX_IS_FLEX || AC_MSG_ERROR([Flex is required])
 AC_PROG_YACC