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CMake/Source/kwsys/SharedForward.h.in
Brad King 734ef07548 COMP: Avoid incompatible pointer warning 
In SharedForward, the call to execvp warned on MinGW because the
signature declared in process.h has an extra const.  We use an explicit
cast to convert the pointer type.
2008-09-27 08:04:13 -04:00

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/*=========================================================================
Program: KWSys - Kitware System Library
Module: $RCSfile$
Copyright (c) Kitware, Inc., Insight Consortium. All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#ifndef @KWSYS_NAMESPACE@_SharedForward_h
#define @KWSYS_NAMESPACE@_SharedForward_h
/*
This header is used to create a forwarding executable sets up the
shared library search path and replaces itself with a real
executable. This is useful when creating installations on UNIX with
shared libraries that will run from any install directory. Typical
usage:
#if defined(CMAKE_INTDIR)
# define CONFIG_DIR_PRE CMAKE_INTDIR "/"
# define CONFIG_DIR_POST "/" CMAKE_INTDIR
#else
# define CONFIG_DIR_PRE ""
# define CONFIG_DIR_POST ""
#endif
#define @KWSYS_NAMESPACE@_SHARED_FORWARD_DIR_BUILD "/path/to/foo-build/bin"
#define @KWSYS_NAMESPACE@_SHARED_FORWARD_PATH_BUILD "." CONFIG_DIR_POST
#define @KWSYS_NAMESPACE@_SHARED_FORWARD_PATH_INSTALL "../lib/foo-1.2"
#define @KWSYS_NAMESPACE@_SHARED_FORWARD_EXE_BUILD CONFIG_DIR_PRE "foo-real"
#define @KWSYS_NAMESPACE@_SHARED_FORWARD_EXE_INSTALL "../lib/foo-1.2/foo-real"
#define @KWSYS_NAMESPACE@_SHARED_FORWARD_OPTION_COMMAND "--command"
#define @KWSYS_NAMESPACE@_SHARED_FORWARD_OPTION_PRINT "--print"
#define @KWSYS_NAMESPACE@_SHARED_FORWARD_OPTION_LDD "--ldd"
#if defined(CMAKE_INTDIR)
# define @KWSYS_NAMESPACE@_SHARED_FORWARD_CONFIG_NAME CMAKE_INTDIR
#endif
#include <@KWSYS_NAMESPACE@/SharedForward.h>
int main(int argc, char** argv)
{
return @KWSYS_NAMESPACE@_shared_forward_to_real(argc, argv);
}
Specify search and executable paths relative to the forwarding
executable location or as full paths. Include no trailing slash.
In the case of a multi-configuration build, when CMAKE_INTDIR is
defined, the DIR_BUILD setting should point at the directory above
the executable (the one containing the per-configuration
subdirectory specified by CMAKE_INTDIR). Then PATH_BUILD entries
and EXE_BUILD should be specified relative to this location and use
CMAKE_INTDIR as necessary. In the above example imagine appending
the PATH_BUILD or EXE_BUILD setting to the DIR_BUILD setting. The
result should form a valid path with per-configuration subdirectory.
Additional paths may be specified in the PATH_BUILD and PATH_INSTALL
variables by using comma-separated strings. For example:
#define @KWSYS_NAMESPACE@_SHARED_FORWARD_PATH_BUILD \
"." CONFIG_DIR_POST, "/path/to/bar-build" CONFIG_DIR_POST
#define @KWSYS_NAMESPACE@_SHARED_FORWARD_PATH_INSTALL \
"../lib/foo-1.2", "../lib/bar-4.5"
See the comments below for specific explanations of each macro.
*/
/*--------------------------------------------------------------------------*/
/* Full path to the directory in which this executable is built. Do
not include a trailing slash. */
#if !defined(@KWSYS_NAMESPACE@_SHARED_FORWARD_DIR_BUILD)
# error "Must define @KWSYS_NAMESPACE@_SHARED_FORWARD_DIR_BUILD"
#endif
#if !defined(KWSYS_SHARED_FORWARD_DIR_BUILD)
# define KWSYS_SHARED_FORWARD_DIR_BUILD @KWSYS_NAMESPACE@_SHARED_FORWARD_DIR_BUILD
#endif
/* Library search path for build tree. */
#if !defined(@KWSYS_NAMESPACE@_SHARED_FORWARD_PATH_BUILD)
# error "Must define @KWSYS_NAMESPACE@_SHARED_FORWARD_PATH_BUILD"
#endif
#if !defined(KWSYS_SHARED_FORWARD_PATH_BUILD)
# define KWSYS_SHARED_FORWARD_PATH_BUILD @KWSYS_NAMESPACE@_SHARED_FORWARD_PATH_BUILD
#endif
/* Library search path for install tree. */
#if !defined(@KWSYS_NAMESPACE@_SHARED_FORWARD_PATH_INSTALL)
# error "Must define @KWSYS_NAMESPACE@_SHARED_FORWARD_PATH_INSTALL"
#endif
#if !defined(KWSYS_SHARED_FORWARD_PATH_INSTALL)
# define KWSYS_SHARED_FORWARD_PATH_INSTALL @KWSYS_NAMESPACE@_SHARED_FORWARD_PATH_INSTALL
#endif
/* The real executable to which to forward in the build tree. */
#if !defined(@KWSYS_NAMESPACE@_SHARED_FORWARD_EXE_BUILD)
# error "Must define @KWSYS_NAMESPACE@_SHARED_FORWARD_EXE_BUILD"
#endif
#if !defined(KWSYS_SHARED_FORWARD_EXE_BUILD)
# define KWSYS_SHARED_FORWARD_EXE_BUILD @KWSYS_NAMESPACE@_SHARED_FORWARD_EXE_BUILD
#endif
/* The real executable to which to forward in the install tree. */
#if !defined(@KWSYS_NAMESPACE@_SHARED_FORWARD_EXE_INSTALL)
# error "Must define @KWSYS_NAMESPACE@_SHARED_FORWARD_EXE_INSTALL"
#endif
#if !defined(KWSYS_SHARED_FORWARD_EXE_INSTALL)
# define KWSYS_SHARED_FORWARD_EXE_INSTALL @KWSYS_NAMESPACE@_SHARED_FORWARD_EXE_INSTALL
#endif
/* The configuration name with which this executable was built (Debug/Release). */
#if defined(@KWSYS_NAMESPACE@_SHARED_FORWARD_CONFIG_NAME)
# define KWSYS_SHARED_FORWARD_CONFIG_NAME @KWSYS_NAMESPACE@_SHARED_FORWARD_CONFIG_NAME
#else
# undef KWSYS_SHARED_FORWARD_CONFIG_NAME
#endif
/* Create command line option to replace executable. */
#if defined(@KWSYS_NAMESPACE@_SHARED_FORWARD_OPTION_COMMAND)
# if !defined(KWSYS_SHARED_FORWARD_OPTION_COMMAND)
# define KWSYS_SHARED_FORWARD_OPTION_COMMAND @KWSYS_NAMESPACE@_SHARED_FORWARD_OPTION_COMMAND
# endif
#else
# undef KWSYS_SHARED_FORWARD_OPTION_COMMAND
#endif
/* Create command line option to print environment setting and exit. */
#if defined(@KWSYS_NAMESPACE@_SHARED_FORWARD_OPTION_PRINT)
# if !defined(KWSYS_SHARED_FORWARD_OPTION_PRINT)
# define KWSYS_SHARED_FORWARD_OPTION_PRINT @KWSYS_NAMESPACE@_SHARED_FORWARD_OPTION_PRINT
# endif
#else
# undef KWSYS_SHARED_FORWARD_OPTION_PRINT
#endif
/* Create command line option to run ldd or equivalent. */
#if defined(@KWSYS_NAMESPACE@_SHARED_FORWARD_OPTION_LDD)
# if !defined(KWSYS_SHARED_FORWARD_OPTION_LDD)
# define KWSYS_SHARED_FORWARD_OPTION_LDD @KWSYS_NAMESPACE@_SHARED_FORWARD_OPTION_LDD
# endif
#else
# undef KWSYS_SHARED_FORWARD_OPTION_LDD
#endif
/*--------------------------------------------------------------------------*/
/* Include needed system headers. */
#include <limits.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <stdio.h>
#if defined(_WIN32) && !defined(__CYGWIN__)
# include <io.h>
# include <windows.h>
# include <process.h>
# define KWSYS_SHARED_FORWARD_ESCAPE_ARGV /* re-escape argv for execvp */
#else
# include <unistd.h>
# include <sys/stat.h>
#endif
/*--------------------------------------------------------------------------*/
/* Configuration for this platform. */
/* The path separator for this platform. */
#if defined(_WIN32) && !defined(__CYGWIN__)
# define KWSYS_SHARED_FORWARD_PATH_SEP ';'
# define KWSYS_SHARED_FORWARD_PATH_SLASH '\\'
#else
# define KWSYS_SHARED_FORWARD_PATH_SEP ':'
# define KWSYS_SHARED_FORWARD_PATH_SLASH '/'
#endif
static const char kwsys_shared_forward_path_sep[2] = {KWSYS_SHARED_FORWARD_PATH_SEP, 0};
static const char kwsys_shared_forward_path_slash[2] = {KWSYS_SHARED_FORWARD_PATH_SLASH, 0};
/* The maximum length of a file name. */
#if defined(PATH_MAX)
# define KWSYS_SHARED_FORWARD_MAXPATH PATH_MAX
#elif defined(MAXPATHLEN)
# define KWSYS_SHARED_FORWARD_MAXPATH MAXPATHLEN
#else
# define KWSYS_SHARED_FORWARD_MAXPATH 16384
#endif
/* Select the environment variable holding the shared library runtime
search path for this platform and build configuration. Also select
ldd command equivalent. */
/* Linux */
#if defined(__linux)
# define KWSYS_SHARED_FORWARD_LDD "ldd"
# define KWSYS_SHARED_FORWARD_LDD_N 1
# define KWSYS_SHARED_FORWARD_LDPATH "LD_LIBRARY_PATH"
#endif
/* FreeBSD */
#if defined(__FreeBSD__)
# define KWSYS_SHARED_FORWARD_LDD "ldd"
# define KWSYS_SHARED_FORWARD_LDD_N 1
# define KWSYS_SHARED_FORWARD_LDPATH "LD_LIBRARY_PATH"
#endif
/* OSX */
#if defined(__APPLE__)
# define KWSYS_SHARED_FORWARD_LDD "otool", "-L"
# define KWSYS_SHARED_FORWARD_LDD_N 2
# define KWSYS_SHARED_FORWARD_LDPATH "DYLD_LIBRARY_PATH"
#endif
/* AIX */
#if defined(_AIX)
# define KWSYS_SHARED_FORWARD_LDD "dump", "-H"
# define KWSYS_SHARED_FORWARD_LDD_N 2
# define KWSYS_SHARED_FORWARD_LDPATH "LIBPATH"
#endif
/* SUN */
#if defined(__sparc)
# define KWSYS_SHARED_FORWARD_LDD "ldd"
# define KWSYS_SHARED_FORWARD_LDD_N 1
# include <sys/isa_defs.h>
# if defined(_ILP32)
# define KWSYS_SHARED_FORWARD_LDPATH "LD_LIBRARY_PATH"
# elif defined(_LP64)
# define KWSYS_SHARED_FORWARD_LDPATH "LD_LIBRARY_PATH_64"
# endif
#endif
/* HP-UX */
#if defined(__hpux)
# define KWSYS_SHARED_FORWARD_LDD "chatr"
# define KWSYS_SHARED_FORWARD_LDD_N 1
# if defined(__LP64__)
# define KWSYS_SHARED_FORWARD_LDPATH "LD_LIBRARY_PATH"
# else
# define KWSYS_SHARED_FORWARD_LDPATH "SHLIB_PATH"
# endif
#endif
/* SGI MIPS */
#if defined(__sgi) && defined(_MIPS_SIM)
# define KWSYS_SHARED_FORWARD_LDD "ldd"
# define KWSYS_SHARED_FORWARD_LDD_N 1
# if _MIPS_SIM == _ABIO32
# define KWSYS_SHARED_FORWARD_LDPATH "LD_LIBRARY_PATH"
# elif _MIPS_SIM == _ABIN32
# define KWSYS_SHARED_FORWARD_LDPATH "LD_LIBRARYN32_PATH"
# elif _MIPS_SIM == _ABI64
# define KWSYS_SHARED_FORWARD_LDPATH "LD_LIBRARY64_PATH"
# endif
#endif
/* Windows */
#if defined(_WIN32)
# if defined(__CYGWIN__)
# define KWSYS_SHARED_FORWARD_LDD "cygcheck"
# define KWSYS_SHARED_FORWARD_LDD_N 1
# endif
# define KWSYS_SHARED_FORWARD_LDPATH "PATH"
#endif
/* Guess on this unknown system. */
#if !defined(KWSYS_SHARED_FORWARD_LDPATH)
# define KWSYS_SHARED_FORWARD_LDD "ldd"
# define KWSYS_SHARED_FORWARD_LDD_N 1
# define KWSYS_SHARED_FORWARD_LDPATH "LD_LIBRARY_PATH"
#endif
#ifdef KWSYS_SHARED_FORWARD_ESCAPE_ARGV
/*--------------------------------------------------------------------------*/
typedef struct kwsys_sf_arg_info_s
{
const char* arg;
int size;
int quote;
} kwsys_sf_arg_info;
/*--------------------------------------------------------------------------*/
static kwsys_sf_arg_info kwsys_sf_get_arg_info(const char* in)
{
/* Initialize information. */
kwsys_sf_arg_info info;
/* String iterator. */
const char* c;
/* Keep track of how many backslashes have been encountered in a row. */
int windows_backslashes = 0;
/* Start with the length of the original argument, plus one for
either a terminating null or a separating space. */
info.arg = in;
info.size = (int)strlen(in) + 1;
info.quote = 0;
/* Scan the string for characters that require escaping or quoting. */
for(c=in; *c; ++c)
{
/* Check whether this character needs quotes. */
if(strchr(" \t?'#&<>|^", *c))
{
info.quote = 1;
}
/* On Windows only backslashes and double-quotes need escaping. */
if(*c == '\\')
{
/* Found a backslash. It may need to be escaped later. */
++windows_backslashes;
}
else if(*c == '"')
{
/* Found a double-quote. We need to escape it and all
immediately preceding backslashes. */
info.size += windows_backslashes + 1;
windows_backslashes = 0;
}
else
{
/* Found another character. This eliminates the possibility
that any immediately preceding backslashes will be
escaped. */
windows_backslashes = 0;
}
}
/* Check whether the argument needs surrounding quotes. */
if(info.quote)
{
/* Surrounding quotes are needed. Allocate space for them. */
info.size += 2;
/* We must escape all ending backslashes when quoting on windows. */
info.size += windows_backslashes;
}
return info;
}
/*--------------------------------------------------------------------------*/
static char* kwsys_sf_get_arg(kwsys_sf_arg_info info, char* out)
{
/* String iterator. */
const char* c;
/* Keep track of how many backslashes have been encountered in a row. */
int windows_backslashes = 0;
/* Whether the argument must be quoted. */
if(info.quote)
{
/* Add the opening quote for this argument. */
*out++ = '"';
}
/* Scan the string for characters that require escaping or quoting. */
for(c=info.arg; *c; ++c)
{
/* On Windows only backslashes and double-quotes need escaping. */
if(*c == '\\')
{
/* Found a backslash. It may need to be escaped later. */
++windows_backslashes;
}
else if(*c == '"')
{
/* Found a double-quote. Escape all immediately preceding
backslashes. */
while(windows_backslashes > 0)
{
--windows_backslashes;
*out++ = '\\';
}
/* Add the backslash to escape the double-quote. */
*out++ = '\\';
}
else
{
/* We encountered a normal character. This eliminates any
escaping needed for preceding backslashes. */
windows_backslashes = 0;
}
/* Store this character. */
*out++ = *c;
}
if(info.quote)
{
/* Add enough backslashes to escape any trailing ones. */
while(windows_backslashes > 0)
{
--windows_backslashes;
*out++ = '\\';
}
/* Add the closing quote for this argument. */
*out++ = '"';
}
/* Store a terminating null without incrementing. */
*out = 0;
return out;
}
#endif
/*--------------------------------------------------------------------------*/
/* Function to convert a logical or relative path to a physical full path. */
static int kwsys_shared_forward_realpath(const char* in_path, char* out_path)
{
#if defined(_WIN32) && !defined(__CYGWIN__)
/* Implementation for Windows. */
DWORD n = GetFullPathName(in_path, KWSYS_SHARED_FORWARD_MAXPATH,
out_path, 0);
return n > 0 && n <= KWSYS_SHARED_FORWARD_MAXPATH;
#else
/* Implementation for UNIX. */
return realpath(in_path, out_path) != 0;
#endif
}
/*--------------------------------------------------------------------------*/
static int kwsys_shared_forward_samepath(const char* file1, const char* file2)
{
#if defined(_WIN32)
int result = 0;
HANDLE h1 = CreateFile(file1, GENERIC_READ, FILE_SHARE_READ, NULL,
OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
HANDLE h2 = CreateFile(file2, GENERIC_READ, FILE_SHARE_READ, NULL,
OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
if(h1 != INVALID_HANDLE_VALUE && h2 != INVALID_HANDLE_VALUE)
{
BY_HANDLE_FILE_INFORMATION fi1;
BY_HANDLE_FILE_INFORMATION fi2;
GetFileInformationByHandle(h1, &fi1);
GetFileInformationByHandle(h2, &fi2);
result = (fi1.dwVolumeSerialNumber == fi2.dwVolumeSerialNumber &&
fi1.nFileIndexHigh == fi2.nFileIndexHigh &&
fi1.nFileIndexLow == fi2.nFileIndexLow);
}
CloseHandle(h1);
CloseHandle(h2);
return result;
#else
struct stat fs1, fs2;
return (stat(file1, &fs1) == 0 && stat(file2, &fs2) == 0 &&
memcmp(&fs2.st_dev, &fs1.st_dev, sizeof(fs1.st_dev)) == 0 &&
memcmp(&fs2.st_ino, &fs1.st_ino, sizeof(fs1.st_ino)) == 0 &&
fs2.st_size == fs1.st_size);
#endif
}
/*--------------------------------------------------------------------------*/
/* Function to report a system error message. */
static void kwsys_shared_forward_strerror(char* message)
{
#if defined(_WIN32) && !defined(__CYGWIN__)
/* Implementation for Windows. */
DWORD original = GetLastError();
DWORD length = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS, 0, original,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
message, KWSYS_SHARED_FORWARD_MAXPATH, 0);
if(length < 1 || length > KWSYS_SHARED_FORWARD_MAXPATH)
{
/* FormatMessage failed. Use a default message. */
_snprintf(message, KWSYS_SHARED_FORWARD_MAXPATH,
"Error 0x%X (FormatMessage failed with error 0x%X)",
original, GetLastError());
}
#else
/* Implementation for UNIX. */
strcpy(message, strerror(errno));
#endif
}
/*--------------------------------------------------------------------------*/
/* Functions to execute a child process. */
static void kwsys_shared_forward_execvp(const char* cmd, char* const* argv)
{
#ifdef KWSYS_SHARED_FORWARD_ESCAPE_ARGV
/* Count the number of arguments. */
int argc = 0;
{
char* const* argvc;
for(argvc = argv; *argvc; ++argvc,++argc) {}
}
/* Create the escaped arguments. */
{
char** nargv = (char**)malloc((argc+1) * sizeof(char*));
int i;
for(i=0; i < argc; ++i)
{
kwsys_sf_arg_info info = kwsys_sf_get_arg_info(argv[i]);
nargv[i] = (char*)malloc(info.size);
kwsys_sf_get_arg(info, nargv[i]);
}
nargv[argc] = 0;
/* Replace the command line to be used. */
argv = nargv;
}
#endif
/* Invoke the child process. */
#if defined(_MSC_VER)
_execvp(cmd, argv);
#elif defined(__MINGW32__)
/* Avoid incompatible pointer warning with a cast. */
execvp(cmd, (char const* const*)argv);
#else
execvp(cmd, argv);
#endif
}
/*--------------------------------------------------------------------------*/
/* Function to get the directory containing the given file or directory. */
static void kwsys_shared_forward_dirname(const char* begin, char* result)
{
/* Find the location of the last slash. */
int last_slash_index = -1;
const char* end = begin + strlen(begin);
for(;begin <= end && last_slash_index < 0; --end)
{
if(*end == '/' || *end == '\\')
{
last_slash_index = (int)(end-begin);
}
}
/* Handle each case of the index of the last slash. */
if(last_slash_index < 0)
{
/* No slashes. */
strcpy(result, ".");
}
else if(last_slash_index == 0)
{
/* Only one leading slash. */
strcpy(result, kwsys_shared_forward_path_slash);
}
#if defined(_WIN32)
else if(last_slash_index == 2 && begin[1] == ':')
{
/* Only one leading drive letter and slash. */
strncpy(result, begin, last_slash_index);
result[last_slash_index] = KWSYS_SHARED_FORWARD_PATH_SLASH;
result[last_slash_index+1] = 0;
}
#endif
else
{
/* A non-leading slash. */
strncpy(result, begin, last_slash_index);
result[last_slash_index] = 0;
}
}
/*--------------------------------------------------------------------------*/
/* Function to check if a file exists and is executable. */
static int kwsys_shared_forward_is_executable(const char* f)
{
#if defined(_MSC_VER)
# define KWSYS_SHARED_FORWARD_ACCESS _access
#else
# define KWSYS_SHARED_FORWARD_ACCESS access
#endif
#if defined(X_OK)
# define KWSYS_SHARED_FORWARD_ACCESS_OK X_OK
#else
# define KWSYS_SHARED_FORWARD_ACCESS_OK 04
#endif
if(KWSYS_SHARED_FORWARD_ACCESS(f, KWSYS_SHARED_FORWARD_ACCESS_OK) == 0)
{
return 1;
}
else
{
return 0;
}
}
/*--------------------------------------------------------------------------*/
/* Function to locate the executable currently running. */
static int kwsys_shared_forward_self_path(const char* argv0, char* result)
{
/* Check whether argv0 has a slash. */
int has_slash = 0;
const char* p = argv0;
for(;*p && !has_slash; ++p)
{
if(*p == '/' || *p == '\\')
{
has_slash = 1;
}
}
if(has_slash)
{
/* There is a slash. Use the dirname of the given location. */
kwsys_shared_forward_dirname(argv0, result);
return 1;
}
else
{
/* There is no slash. Search the PATH for the executable. */
const char* path = getenv("PATH");
const char* begin = path;
const char* end = begin + (begin?strlen(begin):0);
const char* first = begin;
while(first != end)
{
/* Store the end of this path entry. */
const char* last;
/* Skip all path separators. */
for(;*first && *first == KWSYS_SHARED_FORWARD_PATH_SEP; ++first);
/* Find the next separator. */
for(last = first;*last && *last != KWSYS_SHARED_FORWARD_PATH_SEP; ++last);
/* If we got a non-empty directory, look for the executable there. */
if(first < last)
{
/* Determine the length without trailing slash. */
int length = (int)(last-first);
if(*(last-1) == '/' || *(last-1) == '\\')
{
--length;
}
/* Construct the name of the executable in this location. */
strncpy(result, first, length);
result[length] = KWSYS_SHARED_FORWARD_PATH_SLASH;
strcpy(result+(length)+1, argv0);
/* Check if it exists and is executable. */
if(kwsys_shared_forward_is_executable(result))
{
/* Found it. */
result[length] = 0;
return 1;
}
}
/* Move to the next directory in the path. */
first = last;
}
}
/* We could not find the executable. */
return 0;
}
/*--------------------------------------------------------------------------*/
/* Function to convert a specified path to a full path. If it is not
already full, it is taken relative to the self path. */
static int kwsys_shared_forward_fullpath(const char* self_path,
const char* in_path,
char* result,
const char* desc)
{
/* Check the specified path type. */
if(in_path[0] == '/')
{
/* Already a full path. */
strcpy(result, in_path);
}
#if defined(_WIN32)
else if(in_path[0] && in_path[1] == ':')
{
/* Already a full path. */
strcpy(result, in_path);
}
#endif
else
{
/* Relative to self path. */
char temp_path[KWSYS_SHARED_FORWARD_MAXPATH];
strcpy(temp_path, self_path);
strcat(temp_path, kwsys_shared_forward_path_slash);
strcat(temp_path, in_path);
if(!kwsys_shared_forward_realpath(temp_path, result))
{
if(desc)
{
char msgbuf[KWSYS_SHARED_FORWARD_MAXPATH];
kwsys_shared_forward_strerror(msgbuf);
fprintf(stderr, "Error converting %s \"%s\" to real path: %s\n",
desc, temp_path, msgbuf);
}
return 0;
}
}
return 1;
}
/*--------------------------------------------------------------------------*/
/* Function to compute the library search path and executable name
based on the self path. */
static int kwsys_shared_forward_get_settings(const char* self_path,
char* ldpath, char* exe)
{
/* Possible search paths. */
static const char* search_path_build[] = {KWSYS_SHARED_FORWARD_PATH_BUILD, 0};
static const char* search_path_install[] = {KWSYS_SHARED_FORWARD_PATH_INSTALL, 0};
/* Chosen paths. */
const char** search_path;
const char* exe_path;
/* Get the real name of the build and self paths. */
#if defined(KWSYS_SHARED_FORWARD_CONFIG_NAME)
char build_path[] = KWSYS_SHARED_FORWARD_DIR_BUILD "/" KWSYS_SHARED_FORWARD_CONFIG_NAME;
char self_path_logical[KWSYS_SHARED_FORWARD_MAXPATH];
#else
char build_path[] = KWSYS_SHARED_FORWARD_DIR_BUILD;
const char* self_path_logical = self_path;
#endif
char build_path_real[KWSYS_SHARED_FORWARD_MAXPATH];
char self_path_real[KWSYS_SHARED_FORWARD_MAXPATH];
if(!kwsys_shared_forward_realpath(self_path, self_path_real))
{
char msgbuf[KWSYS_SHARED_FORWARD_MAXPATH];
kwsys_shared_forward_strerror(msgbuf);
fprintf(stderr, "Error converting self path \"%s\" to real path: %s\n",
self_path, msgbuf);
return 0;
}
/* Check whether we are running in the build tree or an install tree. */
if(kwsys_shared_forward_realpath(build_path, build_path_real) &&
kwsys_shared_forward_samepath(self_path_real, build_path_real))
{
/* Running in build tree. Use the build path and exe. */
search_path = search_path_build;
#if defined(_WIN32)
exe_path = KWSYS_SHARED_FORWARD_EXE_BUILD ".exe";
#else
exe_path = KWSYS_SHARED_FORWARD_EXE_BUILD;
#endif
#if defined(KWSYS_SHARED_FORWARD_CONFIG_NAME)
/* Remove the configuration directory from self_path. */
kwsys_shared_forward_dirname(self_path, self_path_logical);
#endif
}
else
{
/* Running in install tree. Use the install path and exe. */
search_path = search_path_install;
#if defined(_WIN32)
exe_path = KWSYS_SHARED_FORWARD_EXE_INSTALL ".exe";
#else
exe_path = KWSYS_SHARED_FORWARD_EXE_INSTALL;
#endif
#if defined(KWSYS_SHARED_FORWARD_CONFIG_NAME)
/* Use the original self path directory. */
strcpy(self_path_logical, self_path);
#endif
}
/* Construct the runtime search path. */
{
const char** dir;
for(dir = search_path; *dir; ++dir)
{
/* Add seperator between path components. */
if(dir != search_path)
{
strcat(ldpath, kwsys_shared_forward_path_sep);
}
/* Add this path component. */
if(!kwsys_shared_forward_fullpath(self_path_logical, *dir,
ldpath+strlen(ldpath),
"runtime path entry"))
{
return 0;
}
}
}
/* Construct the executable location. */
if(!kwsys_shared_forward_fullpath(self_path_logical, exe_path, exe,
"executable file"))
{
return 0;
}
return 1;
}
/*--------------------------------------------------------------------------*/
/* Function to print why execution of a command line failed. */
static void kwsys_shared_forward_print_failure(char** argv)
{
char msg[KWSYS_SHARED_FORWARD_MAXPATH];
char** arg = argv;
kwsys_shared_forward_strerror(msg);
fprintf(stderr, "Error running");
for(; *arg; ++arg)
{
fprintf(stderr, " \"%s\"", *arg);
}
fprintf(stderr, ": %s\n", msg);
}
/* Static storage space to store the updated environment variable. */
static char kwsys_shared_forward_ldpath[KWSYS_SHARED_FORWARD_MAXPATH*16] = KWSYS_SHARED_FORWARD_LDPATH "=";
/*--------------------------------------------------------------------------*/
/* Main driver function to be called from main. */
static int @KWSYS_NAMESPACE@_shared_forward_to_real(int argc, char** argv)
{
/* Get the directory containing this executable. */
char self_path[KWSYS_SHARED_FORWARD_MAXPATH];
if(kwsys_shared_forward_self_path(argv[0], self_path))
{
/* Found this executable. Use it to get the library directory. */
char exe[KWSYS_SHARED_FORWARD_MAXPATH];
if(kwsys_shared_forward_get_settings(self_path,
kwsys_shared_forward_ldpath, exe))
{
/* Append the old runtime search path. */
const char* old_ldpath = getenv(KWSYS_SHARED_FORWARD_LDPATH);
if(old_ldpath)
{
strcat(kwsys_shared_forward_ldpath, kwsys_shared_forward_path_sep);
strcat(kwsys_shared_forward_ldpath, old_ldpath);
}
/* Store the environment variable. */
putenv(kwsys_shared_forward_ldpath);
#if defined(KWSYS_SHARED_FORWARD_OPTION_COMMAND)
/* Look for the command line replacement option. */
if(argc > 1 && strcmp(argv[1], KWSYS_SHARED_FORWARD_OPTION_COMMAND) == 0)
{
if(argc > 2)
{
/* Use the command line given. */
strcpy(exe, argv[2]);
argv += 2;
argc -= 2;
}
else
{
/* The option was not given an executable. */
fprintf(stderr, "Option " KWSYS_SHARED_FORWARD_OPTION_COMMAND
" must be followed by a command line.\n");
return 1;
}
}
#endif
#if defined(KWSYS_SHARED_FORWARD_OPTION_PRINT)
/* Look for the print command line option. */
if(argc > 1 && strcmp(argv[1], KWSYS_SHARED_FORWARD_OPTION_PRINT) == 0)
{
fprintf(stdout, "%s\n", kwsys_shared_forward_ldpath);
fprintf(stdout, "%s\n", exe);
return 0;
}
#endif
#if defined(KWSYS_SHARED_FORWARD_OPTION_LDD)
/* Look for the ldd command line option. */
if(argc > 1 && strcmp(argv[1], KWSYS_SHARED_FORWARD_OPTION_LDD) == 0)
{
# if defined(KWSYS_SHARED_FORWARD_LDD)
/* Use the named ldd-like executable and arguments. */
char* ldd_argv[] = {KWSYS_SHARED_FORWARD_LDD, 0, 0};
ldd_argv[KWSYS_SHARED_FORWARD_LDD_N] = exe;
kwsys_shared_forward_execvp(ldd_argv[0], ldd_argv);
/* Report why execution failed. */
kwsys_shared_forward_print_failure(ldd_argv);
return 1;
# else
/* We have no ldd-like executable available on this platform. */
fprintf(stderr, "No ldd-like tool is known to this executable.\n");
return 1;
# endif
}
#endif
/* Replace this process with the real executable. */
argv[0] = exe;
kwsys_shared_forward_execvp(argv[0], argv);
/* Report why execution failed. */
kwsys_shared_forward_print_failure(argv);
}
else
{
/* Could not convert self path to the library directory. */
}
}
else
{
/* Could not find this executable. */
fprintf(stderr, "Error locating executable \"%s\".\n", argv[0]);
}
/* Avoid unused argument warning. */
(void)argc;
/* Exit with failure. */
return 1;
}
#else
# error "@KWSYS_NAMESPACE@/SharedForward.h should be included only once."
#endif
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