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git-svn-id: http://svn.code.sf.net/p/netpbm/code/trunk@1 9d0c8265-081b-0410-96cb-a4ca84ce46f8

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+/**************************************************************************
+                               NETPBM
+                           pm_config.in.h
+***************************************************************************
+  This file provides platform-dependent definitions for all Netpbm
+  libraries and the programs that use them.
+
+  The make files generate pm_config.h by copying this file and adding
+  other stuff.  The Netpbm programs #include pm_config.h.
+
+  Wherever possible, Netpbm handles customization via the make files
+  instead of via this file.  However, Netpbm's make file philosophy
+  discourages lining up a bunch of -D options on every compile, so a 
+  #define here would be preferable to a -D compile option.
+
+**************************************************************************/
+
+#if defined(USG) || defined(SVR4) || defined(VMS) || defined(__SVR4)
+#define SYSV
+#endif
+#if !( defined(BSD) || defined(SYSV) || defined(MSDOS) || defined(__amigaos__))
+/* CONFIGURE: If your system is >= 4.2BSD, set the BSD option; if you're a
+** System V site, set the SYSV option; if you're IBM-compatible, set MSDOS;
+** and if you run on an Amiga, set AMIGA. If your compiler is ANSI C, you're
+** probably better off setting SYSV - all it affects is string handling.
+*/
+#define BSD
+/* #define SYSV */
+/* #define MSDOS */
+#endif
+
+/* Switch macros like _POSIX_SOURCE are supposed to add features from
+   the indicated standard to the C library.  A source file defines one
+   of these macros to declare that it uses features of that standard
+   as opposed to conflicting features of other standards (e.g. the
+   POSIX foo() subroutine might do something different from the X/Open
+   foo() subroutine).  Plus, this forces the coder to understand upon
+   what feature sets his program relies.
+
+   But some C library developers have misunderstood this and think of these
+   macros like the old __ansi__ macro, which tells the C library, "Don't 
+   have any features that aren't in the ANSI standard."  I.e. it's just
+   the opposite -- the macro subtracts features instead of adding them.
+
+   This means that on some platforms, Netpbm programs must define
+   _POSIX_SOURCE, and on others, it must not.  Netpbm's POSIX_IS_IMPLIED 
+   macro indicates that we're on a platform where we need not define
+   _POSIX_SOURCE (and probably must not).
+
+   The problematic C libraries treat _XOPEN_SOURCE the same way.
+*/
+#if defined(__OpenBSD__) || defined (__NetBSD__) || defined(__bsdi__) || defined(__APPLE__)
+#define POSIX_IS_IMPLIED
+#endif
+
+
+/* CONFIGURE: If you have an X11-style rgb color names file, define its
+** path here.  This is used by PPM to parse color names into rgb values.
+** If you don't have such a file, comment this out and use the alternative
+** hex and decimal forms to specify colors (see ppm/pgmtoppm.1 for details).  */
+/* There was some evidence before Netpbm 9.1 that the rgb database macros
+   might be already set right now.  I couldn't figure out how, so I changed
+   their meanings and they are now set unconditionally.  -Bryan 00.05.03.
+*/
+#ifdef VMS
+#define RGB_DB1 "PBMplus_Dir:RGB.TXT"
+#define RGB_DB2 "PBMplus_Dir:RGB.TXT"
+#define RGB_DB3 "PBMplus_Dir:RGB.TXT"
+#else
+#define RGB_DB1 "/usr/lib/X11/rgb.txt"
+#define RGB_DB2 "/usr/share/X11/rgb.txt"
+#define RGB_DB3 "/usr/X11R6/lib/X11/rgb.txt"
+#endif
+
+/* CONFIGURE: This is the name of an environment variable that tells
+** where the color names database is.  If the environment variable isn't
+** set, Netpbm tries the hardcoded defaults set above.
+*/
+#define RGBENV "RGBDEF"    /* name of env-var */
+
+#if (defined(SYSV) || defined(__amigaos__))
+
+#include <string.h>
+/* Before Netpbm 9.1, rand and srand were macros for random and
+   srandom here.  This caused a failure on a SunOS 5.6 system, which
+   is SYSV, but has both rand and random declared (with different
+   return types).  The macro caused the prototype for random to be a
+   second prototype for rand.  Before 9.1, Netpbm programs called
+   random() and on a SVID system, that was really a call to rand().
+   We assume all modern systems have rand() itself, so now Netpbm
+   always calls rand() and if we find a platform that doesn't have
+   rand(), we will add something here for that platform.  -Bryan 00.04.26
+#define random rand
+#define srandom(s) srand(s)
+extern void srand();
+extern int rand();
+*/
+/* Before Netpbm 9.15, there were macro definitions of index() and 
+   rindex() here, but there are no longer any invocations of those 
+   functions in Netpbm, except in the VMS-only code, so there's no
+   reason for them.
+*/
+
+#ifndef __SASC
+#ifndef _DCC    /* Amiga DICE Compiler */
+#define bzero(dst,len) memset(dst,0,len)
+#define bcopy(src,dst,len) memcpy(dst,src,len)
+#define bcmp memcmp
+#endif /* _DCC */
+#endif /* __SASC */
+
+#endif /*SYSV or Amiga*/
+
+/* We should change all of Netpbm to use uint32_t instead of uint32n,
+   because we now have a strategy for ensuring that uint32_t is defined.
+   But we're going to wait a while in case our uint32_t strategy doesn't
+   work.  04.08.24.
+*/
+typedef uint32_t uint32n;
+typedef int32_t int32n;
+
+#include <fcntl.h>
+#include <time.h>
+#include <stdlib.h>
+#include <unistd.h>
+/* 
+   Before Netpbm 9.0, atoi() and exit() were declared for everybody
+   except MSDOS and Amiga, and time() and write() were declared for
+   everybody except MSDOS, Amiga, and __osf__.  fcntl.h, time.h, and
+   stlib.h were included for MSDOS and Amiga, and unistd.h was included
+   for everyone except VMS, MSDOS, and Amiga.  With the netbsd patches,
+   atoi(), exit(), time(), and write() were not declared for __NetBSD__.
+
+   We're hoping that all current systems have the standard header
+   files, and will reinstate some of these explicit declarations if we
+   hear otherwise.  
+
+   If it turns out to be this easy, we should just move these inclusions
+   to the source files that actually need them.
+   
+   -Bryan 2000.04.13
+
+extern int atoi();
+extern void exit();
+extern long time();
+extern int write(); 
+*/
+
+/* CONFIGURE: On most BSD systems, malloc() gets declared in stdlib.h, on
+** system V, it gets declared in malloc.h. On some systems, malloc.h
+** doesn't declare these, so we have to do it here. On other systems,
+** for example HP/UX, it declares them incompatibly.  And some systems,
+** for example Dynix, don't have a malloc.h at all.  A sad situation.
+** If you have compilation problems that point here, feel free to tweak
+** or remove these declarations.
+*/
+#ifdef BSD
+#include <stdlib.h>
+#endif
+#if (defined(SYSV) && !defined(VMS))
+#include <malloc.h>
+#endif
+/* extern char* malloc(); */
+/* extern char* realloc(); */
+/* extern char* calloc(); */
+
+/* CONFIGURE: Some systems don't have vfprintf(), which we need for the
+** error-reporting routines.  If you compile and get a link error about
+** this routine, uncomment the first define, which gives you a vfprintf
+** that uses the theoretically non-portable but fairly common routine
+** _doprnt().  If you then get a link error about _doprnt, or
+** message-printing doesn't look like it's working, try the second
+** define instead.
+*/
+/* #define NEED_VFPRINTF1 */
+/* #define NEED_VFPRINTF2 */
+
+/* CONFIGURE: Some systems don't have strstr(), which some routines need.
+** If you compile and get a link error about this routine, uncomment the
+** define, which gives you a strstr.
+*/
+/* #define NEED_STRSTR */
+
+/* CONFIGURE: Set this option if your compiler uses strerror(errno)
+** instead of sys_errlist[errno] for error messages.
+*/
+#define A_STRERROR
+
+/* CONFIGURE: If your system has the setmode() function, set HAVE_SETMODE.
+** If you do, and also the O_BINARY file mode, pm_init() will set the mode
+** of stdin and stdout to binary for all Netpbm programs.
+** You need this with Cygwin (Windows).
+*/
+#ifdef __CYGWIN__
+#define HAVE_SETMODE
+#endif
+
+/* #define HAVE_SETMODE */
+
+#ifdef __amigaos__
+#include <clib/exec_protos.h>
+#define getpid() ((pid_t)FindTask(NULL))
+#endif
+
+#ifdef DJGPP
+#define HAVE_SETMODE
+#define lstat stat
+#endif /* DJGPP */
+
+/*  CONFIGURE: Netpbm uses __inline__ to declare functions that should
+    be compiled as inline code.  GNU C recognizes the __inline__ keyword.
+    If your compiler recognizes any other keyword for this, you can set
+    it here.
+*/
+#if !defined(__GNUC__)
+  #if (!defined(__inline__))
+    #if (defined(__sgi) || defined(_AIX))
+      #define __inline__ __inline
+    #else   
+      #define __inline__
+    #endif
+  #endif
+#endif
+
+/* CONFIGURE: Some systems seem to need more than standard program linkage
+   to get a data (as opposed to function) item out of a library.
+
+   On Windows mingw systems, it seems you have to #include <import_mingw.h>
+   and #define EXTERNDATA DLL_IMPORT  .  2001.05.19
+*/
+#define EXTERNDATA extern
+
+/* only Pnmstitch uses UNREFERENCED_PARAMETER today (and I'm not sure why),
+   but it might come in handy some day.
+*/
+#if (!defined(UNREFERENCED_PARAMETER))
+# if (defined(__GNUC__))
+#  define UNREFERENCED_PARAMETER(x)
+# elif (defined(__USLC__) || defined(_M_XENIX))
+#  define UNREFERENCED_PARAMETER(x) ((x)=(x))
+# else
+#  define UNREFERENCED_PARAMETER(x) (x)
+# endif
+#endif
+
+/* In GNU, _LFS_LARGEFILE means the "off_t" functions (ftello, etc.) are
+   available.  In AIX, _AIXVERSION_430 means it's AIX Version 4.3.0 or
+   better, which seems to mean the "off_t" functions are available.
+*/
+#if defined(_LFS_LARGEFILE) || defined(_AIXVERSION_430)
+typedef off_t pm_filepos;
+#define FTELLO ftello
+#define FSEEKO fseeko
+#else
+typedef long int pm_filepos;
+#define FTELLO ftell
+#define FSEEKO fseek
+#endif
+
+#if defined(_PLAN9)
+#define TMPDIR "/tmp"
+#else
+/* Use POSIX value P_tmpdir from libc */
+#define TMPDIR P_tmpdir
+#endif
+
+/* Note that if you _don't_ have mkstemp(), you'd better have a safe
+   mktemp() or otherwise not be concerned about its unsafety.  On some
+   systems, use of mktemp() makes it possible for a hacker to cause a
+   Netpbm program to access a file of the hacker's choosing when the
+   Netpbm program means to access its own temporary file.
+*/
+#ifdef __MINGW32__
+  #define HAVE_MKSTEMP 0
+#else
+  #define HAVE_MKSTEMP 1
+#endif
+