don't expose configure generated headers to users.

Those HAVE_FOO collide with #define's introduced by a package which uses
CLN. The result is very funny (debugging this is not, though).

configure.ac

@@ -24,10 +24,14 @@ AC_INIT([cln], cln_version)
 AC_PREREQ(2.59)
 AC_CONFIG_SRCDIR(src/integer/gcd/cl_I_gcd.cc)
 AC_CONFIG_AUX_DIR([autoconf])
-AC_CONFIG_HEADERS(include/cln/config.h include/cln/host_cpu.h include/cln/version.h src/base/cl_base_config.h src/base/cl_gmpconfig.h src/timing/cl_t_config.h)
+AC_CONFIG_HEADERS(autoconf/cl_config.h include/cln/config.h include/cln/host_cpu.h include/cln/version.h src/base/cl_base_config.h src/base/cl_gmpconfig.h src/timing/cl_t_config.h)
 AM_INIT_AUTOMAKE([foreign 1.8 dist-bzip2])
 AH_TOP([#ifdef _CL_CONFIG_H])
 AH_TOP([#include "cln/host_cpu.h"])
+AH_TOP([/* prevents cln/config.h from being included, so no macro gets redefined */])
+AH_TOP([#define _CL_CONFIG_PUBLIC_H])
+AH_TOP([/* prevents cln/version.h from being included, so no macro gets redefined */])
+AH_TOP([#define _CL_VERSION_H])
 AH_BOTTOM([#endif /* _CL_CONFIG_H */])
 
 dnl           checks for programs

include/cln/config.h.in

@@ -0,0 +1,14 @@
+#ifdef _CL_CONFIG_PUBLIC_H
+
+#include "cln/host_cpu.h"
+#include "cln/version.h"
+
+/* 
+ * FIXME: this should not be exposed to user. Or at least it should be
+ * renamed to CL_HAVE_LONGLONG or something like that.
+ */
+/* compiler supports the `long long' type */
+#undef HAVE_LONGLONG
+
+#endif /* _CL_CONFIG_PUBLIC_H */
+

include/cln/version.h.in

@@ -1,15 +1,19 @@
-// Version information (cf. cln.m4)
+/* CLN version information */
 
 #ifndef _CL_VERSION_H
 #define _CL_VERSION_H
 
-/* These definitions are adjusted by `configure' automatically. */
+/* CLN release number */
+#undef CL_VERSION
 
+/* Major version number of CLN */
+#undef CL_VERSION_MAJOR
 
-#define CL_VERSION_MAJOR 1
-#define CL_VERSION_MINOR 1
-#define CL_VERSION_PATCHLEVEL 0
-#define CL_VERSION 1.1.0
+/* Minor version number of CLN */
+#undef CL_VERSION_MINOR
+
+/* Patchlevel version number of CLN */
+#undef CL_VERSION_PATCHLEVEL
 
 namespace cln {
 

src/base/cl_maybe_inline.h

@@ -3,7 +3,7 @@
 #ifndef _CL_MAYBE_INLINE_H
 #define _CL_MAYBE_INLINE_H
 
-#include "cln/config.h"
+#include "cl_config.h"
 
 /*
  * Selectively inline a function in *some* translation units.

src/base/cl_sysdep.h

@@ -4,7 +4,7 @@
 #define _CL_SYSDEP_H
 
 // CPU and other
-#include "cln/config.h"
+#include "cl_config.h"
 
 // char_bitsize, short_bitsize, long_bitsize, long_long_bitsize
 #include "cln/intparam.h"

src/base/digitseq/cl_asm.h

@@ -1,6 +1,6 @@
 // Includes the CPU specific cl_asm_*.h file.
 
-#include "cln/config.h"
+#include "cl_config.h"
 #include "base/digitseq/cl_DS_endian.h"
 
 #ifndef NO_ASM

src/base/digitseq/cl_asm_.cc

@@ -1,6 +1,6 @@
 // Includes the CPU specific cl_asm_*.cc file.
 
-#include "cln/config.h"
+#include "cl_config.h"
 #include "base/digitseq/cl_DS_endian.h"
 
 #ifndef NO_ASM

src/polynomial/elem/cl_asm_GF2.cc

@@ -1,6 +1,6 @@
 // Includes the CPU specific cl_asm_*.cc file.
 
-#include "cln/config.h"
+#include "cl_config.h"
 
 #if defined(__sparc__) || defined(__sparc64__)
   #include "cl_asm_sparc_GF2.cc"