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-rw-r--r--extern/ode/dist/configurator.c437
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diff --git a/extern/ode/dist/configurator.c b/extern/ode/dist/configurator.c
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-/*************************************************************************
- * *
- * Open Dynamics Engine, Copyright (C) 2001,2002 Russell L. Smith. *
- * All rights reserved. Email: russ@q12.org Web: www.q12.org *
- * *
- * This library is free software; you can redistribute it and/or *
- * modify it under the terms of EITHER: *
- * (1) The GNU Lesser General Public License as published by the Free *
- * Software Foundation; either version 2.1 of the License, or (at *
- * your option) any later version. The text of the GNU Lesser *
- * General Public License is included with this library in the *
- * file LICENSE.TXT. *
- * (2) The BSD-style license that is included with this library in *
- * the file LICENSE-BSD.TXT. *
- * *
- * This library is distributed in the hope that it will be useful, *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of *
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files *
- * LICENSE.TXT and LICENSE-BSD.TXT for more details. *
- * *
- *************************************************************************/
-
-/*
-
-this program discovers some system configuration stuff, prior to compiling
-ODE. the usage is:
-
- configurator <config.h-file-to-generate> <compiler-command-line>
- <delete-command-line> <THIS_DIR-variable>
-
-this program looks long, but it really has an extremely simple structure and
-should be very easy for anyone to modify. it should be very portable as it
-is written in straight ANSI C and only uses the following library functions:
- * printf
- * fopen (assumes 0 returned on failure)
- * fclose
- * fprintf
- * system
- * exit
-except where stated, we do not assume anything about the return codes from
-these functions.
-
-why didn't i just use GNU autoconf? :
- * autoconf needs a bourne shell and a bunch of other tools that windows
- users may not have.
- * i like reinventing the wheel.
-
-*/
-
-#include <stdio.h>
-
-/****************************************************************************/
-/* project constants */
-
-#define SETUP_SHLIB_DEFS \
- "#ifndef SHAREDLIBIMPORT\n" \
- "#define SHAREDLIBIMPORT\n" \
- "#endif\n" \
- "#ifndef SHAREDLIBEXPORT\n" \
- "#define SHAREDLIBEXPORT\n" \
- "#endif\n"
-
-/* the config.h header */
-char *config_h_part1 =
-"/* per-machine configuration. this file is automatically generated. */\n"
-"\n"
-"#ifndef _ODE_CONFIG_H_\n"
-"#define _ODE_CONFIG_H_\n"
-"\n"
-"/* shared lib definitions */\n"
-SETUP_SHLIB_DEFS
-"\n"
-"/* standard system headers */\n";
-
-
-char *config_h_part2 =
-"\n"
-"#ifdef __cplusplus\n"
-"extern \"C\" {\n"
-"#endif\n"
-"\n";
-
-/* the config.h footer */
-char *config_h_footer =
-"#ifdef __cplusplus\n"
-"}\n"
-"#endif\n"
-"#endif\n";
-
-/****************************************************************************/
-/* implementations of some string functions. these are prefixed with 'x'
- * to prevent any conflicts with built-in functions.
- */
-
-#define strcpy xstrcpy
-void xstrcpy (char *dest, char *src)
-{
- while (*src) *dest++ = *src++;
- *dest = 0;
-}
-
-
-#define strcat xstrcat
-void xstrcat (char *dest, char *src)
-{
- while (*dest) dest++;
- while (*src) *dest++ = *src++;
- *dest = 0;
-}
-
-/****************************************************************************/
-/* utility functions */
-
-/* print an error message and exit */
-
-void fatal_error (char *message)
-{
- printf ("\n*** configurator failed: %s.\n\n"
- "please fix your configuration and try again.\n"
- "if you have to fix the configurator program or the makefiles, "
- "please email\n"
- "your changes to the ODE mailing list (ode@q12.org).\n\n", message);
- exit (0);
-}
-
-
-/* open a file, generate an error if it can't be done */
-
-FILE * xfopen (char *filename, char *mode)
-{
- FILE *f;
- f = fopen (filename,mode);
- if (!f) fatal_error ("can not open a file");
- return f;
-}
-
-
-/* return 1 if the file exists or 0 if not */
-
-int file_exists (char *filename)
-{
- FILE *f;
- f = fopen (filename,"rb");
- if (f) fclose (f);
- return (f != 0);
-}
-
-
-/* write a string to a new file */
-
-void write_to_file (char *filename, char *s)
-{
- FILE *f = xfopen (filename,"wt");
- fprintf (f,"%s",s);
- fclose (f);
-}
-
-
-/* write a comment to a header file */
-
-void write_header_comment (FILE *file, char *description)
-{
- fprintf (file,"/* %s */\n",description);
- printf ("%s ...\n",description);
-}
-
-
-/* delete a file */
-
-char *delete_cmd_line = 0;
-void delete_file (char *filename)
-{
- char cmd[1000];
- strcpy (cmd,delete_cmd_line);
- strcat (cmd," ");
- strcat (cmd,filename);
- printf ("%s\n",cmd);
- system (cmd);
-}
-
-
-/* run a compile command */
-
-char *compile_cmd_line = 0;
-void compile (char *output, char *input)
-{
- char cmd[1000];
- strcpy (cmd,compile_cmd_line);
- strcat (cmd,output);
- strcat (cmd," ");
- strcat (cmd,input);
- printf ("%s\n",cmd);
- system (cmd);
-}
-
-
-/* run a program we've just compiled */
-
-char *run_prefix = "";
-void run (char *filename)
-{
- char cmd[1000];
- strcpy (cmd,run_prefix);
- strcat (cmd,filename);
- printf ("%s\n",cmd);
- system (cmd);
-}
-
-/****************************************************************************/
-/* system tests */
-
-void check_if_this_is_a_pentium (FILE *file)
-{
- write_header_comment (file,"is this a pentium on a gcc-based platform?");
- write_to_file ("ctest.c",
- "int main() {\n"
- " asm (\"mov $0,%%eax\\n cpuid\\n\" : : : \"%eax\");\n"
- " return 0;\n"
- "}\n");
- delete_file ("ctest.exe");
- compile ("ctest.exe","ctest.c");
- if (file_exists ("ctest.exe")) {
- fprintf (file,"#define PENTIUM 1\n\n");
- }
- else {
- fprintf (file,"/* #define PENTIUM 1 -- not a pentium */\n\n");
- }
-
- delete_file ("ctest.c");
- delete_file ("ctest.exe");
-}
-
-/****************************************************************************/
-/* tests: standard headers */
-
-void get_all_standard_headers (FILE *file)
-{
- int i;
- FILE *f;
- char *header[7] = {"stdio.h", "stdlib.h", "math.h", "string.h",
- "stdarg.h", "malloc.h", "alloca.h"};
-
- for (i=0; i < sizeof(header)/sizeof(char*); i++) {
- FILE *f = xfopen ("ctest.c","wt");
- fprintf (f,"#include <%s>\nint main() { return 0; }\n",header[i]);
- fclose (f);
- delete_file ("ctest.exe");
- compile ("ctest.exe","ctest.c");
- if (file_exists ("ctest.exe")) {
- fprintf (file,"#include <%s>\n",header[i]);
- }
- }
-
- delete_file ("ctest.c");
- delete_file ("ctest.exe");
-}
-
-/****************************************************************************/
-/* tests: typedefs and constants for ODE */
-
-void get_ODE_integer_typedefs (FILE *file)
-{
- write_header_comment (file,"integer types (we assume int >= 32 bits)");
- if (sizeof(char) != 1) fatal_error ("expecting sizeof(char) == 1");
- if (sizeof(int) < 4) fatal_error ("expecting sizeof(int) >= 4");
- fprintf (file,"typedef char int8;\ntypedef unsigned char uint8;\n");
- if (sizeof(short) == 4) {
- fprintf (file,"typedef short int32;\ntypedef unsigned short uint32;\n");
- }
- else if (sizeof(int) == 4) {
- fprintf (file,"typedef int int32;\ntypedef unsigned int uint32;\n");
- }
- else {
- fatal_error ("can not find 4 byte integer type");
- }
- fprintf (file,"\n"
- "/* an integer type that we can safely cast a pointer to and\n"
- " * from without loss of bits.\n"
- " */\n");
- if (sizeof(short) == sizeof(void*)) {
- fprintf (file,"typedef unsigned short intP;\n");
- }
- else if (sizeof(int) == sizeof(void*)) {
- fprintf (file,"typedef unsigned int intP;\n");
- }
- else if (sizeof(long int) == sizeof(void*)) {
- fprintf (file,"typedef unsigned long int intP;\n");
- }
- fprintf (file,"\n");
-}
-
-
-void get_ODE_float_stuff (FILE *file)
-{
- char *suffix,*type;
- int i;
- FILE *f;
-
-#define SHARED_LIB_SPEC_DECISION \
- "#if defined SHARED_CONFIG_H_INCLUDED_FROM_DEFINING_FILE\n" \
- " #define GLOBAL_SHAREDLIB_SPEC SHAREDLIBEXPORT\n" \
- "#else \n" \
- " #define GLOBAL_SHAREDLIB_SPEC SHAREDLIBIMPORT\n" \
- "#endif\n"
-
-#define UNDEF_SHAREDLIB_SPEC "\n#undef GLOBAL_SHAREDLIB_SPEC\n"
-
-#ifdef dSINGLE
-
-#define INFBYTES SHARED_LIB_SPEC_DECISION "union dInfBytes { unsigned char c[4]; float f; };\nextern GLOBAL_SHAREDLIB_SPEC union dInfBytes dInfinityValue;\n#define dInfinity (dInfinityValue.f)"
-
- char *inc[6] = {"#include <math.h>",
- "#include <math.h>",
- "",
- "",
- "",
- ""};
- char *decl[6] = {
- "SHAREDLIBEXPORT double dInfinityValue = HUGE_VALF;",
- "SHAREDLIBEXPORT double dInfinityValue = HUGE_VAL;",
- "SHAREDLIBEXPORT union dInfBytes dInfinityValue = {{0x7f,0x80,0,0}};",
- "SHAREDLIBEXPORT union dInfBytes dInfinityValue = {{0,0,0x80,0x7f}};",
- "SHAREDLIBEXPORT double dInfinityValue = 1.0f/0.0f;",
- "SHAREDLIBEXPORT double dInfinityValue = 1e20f;"};
- char *inf[6] = {
- SHARED_LIB_SPEC_DECISION "extern GLOBAL_SHAREDLIB_SPEC double dInfinityValue;\n#define dInfinity dInfinityValue" UNDEF_SHAREDLIB_SPEC,
- SHARED_LIB_SPEC_DECISION "extern GLOBAL_SHAREDLIB_SPEC double dInfinityValue;\n#define dInfinity dInfinityValue" UNDEF_SHAREDLIB_SPEC,
- INFBYTES UNDEF_SHAREDLIB_SPEC,
- INFBYTES UNDEF_SHAREDLIB_SPEC,
- SHARED_LIB_SPEC_DECISION "extern GLOBAL_SHAREDLIB_SPEC double dInfinityValue;\n#define dInfinity dInfinityValue" UNDEF_SHAREDLIB_SPEC,
- SHARED_LIB_SPEC_DECISION "extern GLOBAL_SHAREDLIB_SPEC double dInfinityValue;\n#define dInfinity dInfinityValue" UNDEF_SHAREDLIB_SPEC};
-
-#else /* not dSINGLE, must be dDOUBLE */
-
-#define INFBYTES SHARED_LIB_SPEC_DECISION "union dInfBytes { unsigned char c[8]; double d; };\nextern GLOBAL_SHAREDLIB_SPEC union dInfBytes dInfinityValue;\n#define dInfinity (dInfinityValue.d)"
-
- char *inc[5] = {
- "#include <math.h>",
- "",
- "",
- "",
- ""};
- char *decl[5] = {
- "SHAREDLIBEXPORT double dInfinityValue = HUGE_VAL;",
- "SHAREDLIBEXPORT union dInfBytes dInfinityValue = {{0x7f,0xf0,0,0,0,0,0,0}};",
- "SHAREDLIBEXPORT union dInfBytes dInfinityValue = {{0,0,0,0,0,0,0xf0,0x7f}};",
- "SHAREDLIBEXPORT double dInfinityValue = 1.0/0.0;",
- "SHAREDLIBEXPORT double dInfinityValue = 1e20;"};
- char *inf[5] = {
- SHARED_LIB_SPEC_DECISION "extern GLOBAL_SHAREDLIB_SPEC double dInfinityValue;\n#define dInfinity dInfinityValue" UNDEF_SHAREDLIB_SPEC,
- INFBYTES UNDEF_SHAREDLIB_SPEC,
- INFBYTES UNDEF_SHAREDLIB_SPEC,
- SHARED_LIB_SPEC_DECISION "extern GLOBAL_SHAREDLIB_SPEC double dInfinityValue;\n#define dInfinity dInfinityValue" UNDEF_SHAREDLIB_SPEC,
- SHARED_LIB_SPEC_DECISION "extern GLOBAL_SHAREDLIB_SPEC double dInfinityValue;\n#define dInfinity dInfinityValue" UNDEF_SHAREDLIB_SPEC};
-#endif
-
- write_header_comment (file,"select the base floating point type");
-#ifdef dSINGLE
- fprintf (file,"#define dSINGLE 1\n\n");
- type = "float";
- suffix = "f";
-#else
- fprintf (file,"#define dDOUBLE 1\n\n");
- type = "double";
- suffix = "";
-#endif
-
- /* infinity */
- write_header_comment (file,"the floating point infinity");
-
- /* try the different infinity constants until one works */
- for (i=0; i < sizeof(inf)/sizeof(char*); i++) {
- f = xfopen ("ctest.c","wt");
- fprintf (f,
- "#include <stdio.h>\n"
- "#define SHARED_CONFIG_H_INCLUDED_FROM_DEFINING_FILE 1\n"
- SETUP_SHLIB_DEFS
- "%s\n"
- "%s\n"
- "%s\n"
- "int main() {\n"
- " if (dInfinity > 1e10%s && -dInfinity < -1e10%s &&\n"
- " -dInfinity < dInfinity) {\n"
- " FILE *f = fopen (\"data\",\"wt\");\n"
- " fprintf (f,\"foo\\n\");\n"
- " fclose (f);\n"
- " }\n"
- " return 0;\n"
- "}\n"
- ,inc[i],inf[i],decl[i],suffix,suffix);
- fclose (f);
- delete_file ("data");
- compile ("ctest.exe","ctest.c");
- run ("ctest.exe");
- if (file_exists ("data")) {
- fprintf (file,"#define DINFINITY_DECL %s\n",decl[i]);
- fprintf (file,"%s\n\n",inf[i]);
- delete_file ("ctest.c");
- delete_file ("ctest.exe");
- delete_file ("data");
- return;
- }
- }
-
- fatal_error ("can't determine dInfinity constant");
-}
-
-/****************************************************************************/
-
-int main (int argc, char **argv)
-{
- FILE *file;
-
- if (argc < 4 || argc > 5)
- fatal_error ("configurator expects 3 or 4 arguments");
- compile_cmd_line = argv[2];
- delete_cmd_line = argv[3];
- if (argc >= 5) run_prefix = argv[4];
-
- /* check some defines we should have been compiled with */
-#if !defined(dSINGLE) && !defined(dDOUBLE)
- fatal_error ("you must set PRECISION to either SINGLE or DOUBLE");
-#endif
-
- file = xfopen (argv[1],"wt");
- fprintf (file,config_h_part1);
- get_all_standard_headers (file);
- fprintf (file,config_h_part2);
- check_if_this_is_a_pentium (file);
- get_ODE_integer_typedefs (file);
- get_ODE_float_stuff (file);
- fprintf (file,config_h_footer);
- fclose (file);
-
- printf ("\n*** configurator succeeded ***\n\n");
- return 0;
-}
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