[gcalctool] Fix automake's dependency graph to make parallell builds possible

[Robin Sonefors <rsonefors src gnome org>]

commit 0563e6f55839d36415b9c733e75cec282bbaf5c4
Author: Robin Sonefors <ozamosi flukkost nu>
Date:   Sat Oct 3 23:29:48 2009 +0200

    Fix automake's dependency graph to make parallell builds possible

 ChangeLog       |    1 +
 src/Makefile.am |    2 +-
 2 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index 400d67d..1b57150 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -10,6 +10,7 @@ gcalctool change history.
 2009-10-03 Robin Sonefors <ozamosi flukkost nu>
 
     * Fix so the code builds without warnings on 64 bit platforms
+    * Fix automake's dependency graph to make parallell builds possible
 
 2009-09-28 Robin Sonefors <ozamosi flukkost nu>
     * Make numbers written with a keyboard respect sub/superscript toggles
diff --git a/src/Makefile.am b/src/Makefile.am
index 5c98a1b..4d3b948 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -62,7 +62,7 @@ libparser.a: \
 	$(AR) r libparser.a $^
 	$(RANLIB) libparser.a
 
-mp-equation-parser.c mp-equation-parser.h: mp-equation-parser.y
+mp-equation-parser.c mp-equation-parser.h: mp-equation-parser.y mp-equation-lexer.h
 	$(YACC) -d -o mp-equation-parser.c $(srcdir)/mp-equation-parser.y
 
 mp-equation-lexer.c mp-equation-lexer.h: mp-equation-lexer.l