diff -upr a/texlive-20120701-source/utils/pmx/pmx-2.6.18/libf2c/f2c.h b/texlive-20120701-source/utils/pmx/pmx-2.6.18/libf2c/f2c.h
--- a/texlive-20120701-source/utils/pmx/pmx-2.6.18/libf2c/f2c.h	2012-05-20 12:47:27.000000000 -0200
+++ b/texlive-20120701-source/utils/pmx/pmx-2.6.18/libf2c/f2c.h	2015-04-10 22:30:34.448806152 -0200
@@ -157,8 +157,7 @@ struct Namelist {
 	};
 typedef struct Namelist Namelist;
 
-#define abs(x) ((x) >= 0 ? (x) : -(x))
-#define dabs(x) (doublereal)abs(x)
+#define dabs(x) ((doublereal)((x) >= 0 ? (x) : -(x)))
 #define min(a,b) ((a) <= (b) ? (a) : (b))
 #define max(a,b) ((a) >= (b) ? (a) : (b))
 #define dmin(a,b) (doublereal)min(a,b)