Hi,
unfortunately VMS doesn't like to include complex.h after math.h, while the
reverse is allowed.
The reason is that math.h (unless ANSI_C_SOURCE is defined but that hides many
math functions) declares cabs/cabsf/cabsl for a structure representing a
complex number, which is not compatible with the declarations in complex.h
The simplest path is simply to reverse the include order in libgfortran.h. I
know that this is somewhat VMS specific, and I welcome better ideas.
Tested by building gfortran for x86_64-darwin and ia64-hp-openvms.
Ok for trunk ?
Tristan.
libgfortran/
2012-04-03 Tristan Gingold <ging...@adacore.com>
* libgfortran.h: Include complex.h before math.h
diff --git a/libgfortran/libgfortran.h b/libgfortran/libgfortran.h
index be5f133..ea20e14 100644
--- a/libgfortran/libgfortran.h
+++ b/libgfortran/libgfortran.h
@@ -42,11 +42,19 @@ see the files COPYING3 and COPYING.RUNTIME respectively.
If not, see
#include "config.h"
#include <stdio.h>
-#include <math.h>
#include <stddef.h>
#include <float.h>
#include <stdarg.h>
+#if HAVE_COMPLEX_H
+/* Must appear before math.h on VMS systems. */
+# include <complex.h>
+#else
+#define complex __complex__
+#endif
+
+#include <math.h>
+
/* If we're support quad-precision floating-point type, include the
header to our support library. */
#ifdef HAVE_FLOAT128
@@ -66,12 +74,6 @@ extern long double __strtold (const char *, char **);
#define gfc_strtold strtold
#endif
-#if HAVE_COMPLEX_H
-# include <complex.h>
-#else
-#define complex __complex__
-#endif
-
#include "../gcc/fortran/libgfortran.h"
#include "c99_protos.h"
