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configure.c
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configure.c
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/****************************************************************************
* tools/configure.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <sys/stat.h>
#include <stdint.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <dirent.h>
#include <libgen.h>
#include <errno.h>
#include "cfgparser.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define BUFFER_SIZE 1024
#ifdef WIN32
# define strndup(x, y) strdup(x)
#endif
#define HOST_NOCHANGE 0
#define HOST_LINUX 1
#define HOST_MACOS 2
#define HOST_WINDOWS 3
#define HOST_BSD 4
#define WINDOWS_NATIVE 1
#define WINDOWS_CYGWIN 2
#define WINDOWS_MSYS 3
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
static void show_usage(const char *progname, int exitcode);
static void dumpcfgs(void);
static void debug(const char *fmt, ...);
static void parse_args(int argc, char **argv);
static int run_make(const char *arg);
static bool filecmp(const char *f1, const char *f2);
static bool check_directory(const char *directory);
static void verify_directory(const char *directory);
static bool verify_optiondir(const char *directory);
static bool verify_file(const char *path);
static void find_topdir(void);
typedef void (*config_callback)(const char *boarddir, const char *archname,
const char *chipname, const char *boardname,
const char *configname, void *data);
static void config_search(const char *boarddir,
config_callback callback, void *data);
static void archname_callback(const char *boarddir, const char *archname,
const char *chipname, const char *boardname,
const char *configname, void *data);
static void find_archname(void);
static void enumerate_callback(const char *boarddir, const char *archname,
const char *chipname, const char *boardname,
const char *configname, void *data);
static void enumerate_configs(void);
static void check_configdir(void);
static void check_configured(void);
static void read_configfile(void);
static void read_versionfile(void);
static void get_verstring(void);
static bool verify_appdir(const char *appdir);
static void check_appdir(void);
static void check_configuration(void);
static void copy_file(const char *srcpath,
const char *destpath, mode_t mode);
static void substitute(char *str, int ch1, int ch2);
static char *double_appdir_backslashes(char *old_appdir);
static void copy_optional(void);
static void enable_feature(const char *destconfig, const char *varname);
static void disable_feature(const char *destconfig, const char *varname);
static void set_host(const char *destconfig);
static void configure(void);
static void refresh(void);
static void save_original_config(void);
/****************************************************************************
* Private Data
****************************************************************************/
#ifdef CONFIG_WINDOWS_NATIVE
static char g_delim = '\\'; /* Delimiter to use when forming paths */
static bool g_winpaths = true; /* True: Windows style paths */
#else
static char g_delim = '/'; /* Delimiter to use when forming paths */
static bool g_winpaths = false; /* False: POSIX style paths */
#endif
static bool g_debug = false; /* Enable debug output */
static bool g_enforce = false; /* Enfore distclean */
static bool g_distclean = false; /* Distclean if configured */
static const char *g_appdir = NULL; /* Relative path to the application directory */
static const char *g_archdir = NULL; /* Name of architecture subdirectory */
static const char *g_chipdir = NULL; /* Name of chip subdirectory */
static const char *g_boarddir = NULL; /* Name of board subdirectory */
static char *g_configdir = NULL; /* Name of configuration subdirectory */
static char *g_topdir = NULL; /* Full path to top-level NuttX build directory */
static char *g_apppath = NULL; /* Full path to the application directory */
static char *g_configtop = NULL; /* Full path to the top-level configuration directory */
static char *g_configpath = NULL; /* Full path to the configuration sub-directory */
static char *g_scriptspath = NULL; /* Full path to the scripts sub-directory */
static char *g_verstring = "0.0"; /* Version String */
static char *g_srcdefconfig = NULL; /* Source defconfig file */
static char *g_srcmakedefs = NULL; /* Source Make.defs file */
static char **g_makeargv = NULL; /* Arguments pass to make */
static bool g_winnative = false; /* True: Windows native configuration */
static bool g_oldnative = false; /* True: Was Windows native configuration */
static bool g_needapppath = true; /* Need to add app path to the .config file */
static uint8_t g_host = HOST_NOCHANGE;
static uint8_t g_windows = WINDOWS_CYGWIN;
static char g_buffer[BUFFER_SIZE]; /* Scratch buffer for forming full paths */
static struct variable_s *g_configvars = NULL;
static struct variable_s *g_versionvars = NULL;
/* Optional configuration files */
static const char *g_optfiles[] =
{
".gdbinit",
".cproject",
".project"
};
#define N_OPTFILES (sizeof(g_optfiles) / sizeof(const char *))
/****************************************************************************
* Private Functions
****************************************************************************/
static void show_usage(const char *progname, int exitcode)
{
fprintf(stderr, "\nUSAGE: %s [-d] [-E] [-e] [-b|f] [-L] [-l|m|c|g|n|B] "
"[-a <app-dir>] <board-name>:<config-name> [make-opts]\n",
progname);
fprintf(stderr, "\nUSAGE: %s [-h]\n", progname);
fprintf(stderr, "\nWhere:\n");
fprintf(stderr, " -d:\n");
fprintf(stderr, " Enables debug output\n");
fprintf(stderr, " -E:\n");
fprintf(stderr, " Enforce distclean if already configured\n");
fprintf(stderr, " -e:\n");
fprintf(stderr, " Performs distclean if configuration changed\n");
fprintf(stderr, " -b:\n");
#ifdef CONFIG_WINDOWS_NATIVE
fprintf(stderr, " Informs the tool that it should use Windows style\n");
fprintf(stderr, " paths like C:\\Program Files instead of POSIX\n");
fprintf(stderr, " style paths are used like /usr/local/bin. Windows\n");
fprintf(stderr, " style paths are used by default.\n");
#else
fprintf(stderr, " Informs the tool that it should use Windows style\n");
fprintf(stderr, " paths like C:\\Program Files. By default, POSIX\n");
fprintf(stderr, " style paths like /usr/local/bin are used.\n");
#endif
fprintf(stderr, " -f:\n");
#ifdef CONFIG_WINDOWS_NATIVE
fprintf(stderr, " Informs the tool that it should use POSIX style\n");
fprintf(stderr, " paths like /usr/local/bin. By default, Windows\n");
fprintf(stderr, " style paths like C:\\Program Files are used.\n");
#else
fprintf(stderr, " Informs the tool that it should use POSIX style\n");
fprintf(stderr, " paths like /usr/local/bin instead of Windows\n");
fprintf(stderr, " style paths like C:\\Program Files are used.\n");
fprintf(stderr, " POSIX style paths are used by default.\n");
#endif
fprintf(stderr, " [-l|m|c|g|n]\n");
fprintf(stderr, " Selects the host environment.\n");
fprintf(stderr, " -l Selects the Linux (l) host environment.\n");
fprintf(stderr, " -m Selects the macOS (m) host environment.\n");
fprintf(stderr, " -B Selects the *BSD (B) host environment.\n");
fprintf(stderr, " -c Selects the Windows Cygwin (c) environment.\n");
fprintf(stderr, " -g Selects the Windows MinGW/MSYS environment.\n");
fprintf(stderr, " -n Selects the Windows native (n) environment.\n");
fprintf(stderr, " Default: Use host setup in the defconfig file.\n");
fprintf(stderr, " Default Windows: Cygwin.\n");
fprintf(stderr, " -L:\n");
fprintf(stderr, " Lists all available configurations.\n");
fprintf(stderr, " -a <app-dir>:\n");
fprintf(stderr, " Informs the configuration tool where the\n");
fprintf(stderr, " application build directory. This is a relative\n");
fprintf(stderr, " path from the top-level NuttX build directory.\n");
fprintf(stderr, " But default, this tool will look in the usual\n");
fprintf(stderr, " places to locate the application directory:\n");
fprintf(stderr, " ..%capps or\n", g_delim);
fprintf(stderr, " ..%capps-xx.yy where xx.yy is the version number.\n",
g_delim);
fprintf(stderr, " <board-name>:\n");
fprintf(stderr, " Identifies the board. This must correspond to a\n");
fprintf(stderr, " board directory under nuttx%cboards%c.\n",
g_delim, g_delim);
fprintf(stderr, " <config-name>:\n");
fprintf(stderr, " Identifies the specific configuration for the\n");
fprintf(stderr, " selected <board-name>. This must correspond to\n");
fprintf(stderr, " a sub-directory under the board directory at\n");
fprintf(stderr, " under nuttx%cboards%c<board-name>%cconfigs%c.\n",
g_delim, g_delim, g_delim, g_delim);
fprintf(stderr, " [make-opts]:\n");
fprintf(stderr, " Options directly pass to make\n");
fprintf(stderr, " -h:\n");
fprintf(stderr, " Prints this message and exits.\n");
exit(exitcode);
}
static void dumpcfgs(void)
{
find_topdir();
snprintf(g_buffer, BUFFER_SIZE, "%s%cboards", g_topdir, g_delim);
verify_directory(g_buffer);
g_configtop = strdup(g_buffer);
enumerate_configs();
free(g_configtop);
exit(EXIT_SUCCESS);
}
static void debug(const char *fmt, ...)
{
va_list ap;
if (g_debug)
{
va_start(ap, fmt);
vprintf(fmt, ap);
va_end(ap);
}
}
static void parse_args(int argc, char **argv)
{
char *ptr;
int ch;
/* Parse command line options */
while ((ch = getopt(argc, argv, "a:bcdEefghLlmBnu")) > 0)
{
switch (ch)
{
case 'a' :
g_appdir = optarg;
break;
case 'b' :
g_delim = '\\';
g_winpaths = false;
break;
case 'c' :
g_host = HOST_WINDOWS;
g_windows = WINDOWS_CYGWIN;
break;
case 'd' :
g_debug = true;
break;
case 'E' :
g_enforce = true;
break;
case 'e' :
g_distclean = true;
break;
case 'f' :
g_delim = '/';
g_winpaths = true;
break;
case 'g' :
g_host = HOST_WINDOWS;
g_windows = WINDOWS_MSYS;
break;
case 'h' :
show_usage(argv[0], EXIT_SUCCESS);
case 'L' :
dumpcfgs();
case 'l' :
g_host = HOST_LINUX;
break;
case 'm' :
g_host = HOST_MACOS;
break;
case 'B' :
g_host = HOST_BSD;
break;
case 'n' :
g_host = HOST_WINDOWS;
g_windows = WINDOWS_NATIVE;
break;
case '?' :
fprintf(stderr, "ERROR: Unrecognized option: %c\n", optopt);
show_usage(argv[0], EXIT_FAILURE);
case ':' :
fprintf(stderr, "ERROR: Missing option argument, option: %c\n",
optopt);
show_usage(argv[0], EXIT_FAILURE);
default:
fprintf(stderr, "ERROR: Unexpected option: %c\n", ch);
show_usage(argv[0], EXIT_FAILURE);
}
}
/* There should be exactly one argument following the options */
if (optind >= argc)
{
fprintf(stderr, "ERROR: Missing <board-name>:<config-name>\n");
show_usage(argv[0], EXIT_FAILURE);
}
/* The required option should be the board directory name and the
* configuration directory name separated by ':', '/' or '\'. Any are
* acceptable in this context. Or using the custom board relative or
* absolute path directly here.
*/
g_boarddir = argv[optind];
optind++;
if (!verify_optiondir(g_boarddir))
{
ptr = strchr(g_boarddir, ':');
if (ptr == NULL)
{
ptr = strchr(g_boarddir, '/');
if (!ptr)
{
ptr = strchr(g_boarddir, '\\');
}
}
if (ptr == NULL)
{
fprintf(stderr, "ERROR: Invalid <board-name>:<config-name>\n");
show_usage(argv[0], EXIT_FAILURE);
}
*ptr++ = '\0';
g_configdir = ptr;
}
else
{
/* custom board case with relative or absolute path */
g_configpath = strdup(g_boarddir);
}
/* The left arguments will pass to make */
g_makeargv = &argv[optind];
}
static int run_make(const char *arg)
{
char **argv;
snprintf(g_buffer, BUFFER_SIZE, "make %s", arg);
for (argv = g_makeargv; *argv; argv++)
{
strncat(g_buffer, " ", BUFFER_SIZE - 1);
strncat(g_buffer, *argv, BUFFER_SIZE - 1);
}
return system(g_buffer);
}
static bool filecmp(const char *f1, const char *f2)
{
FILE *stream1;
FILE *stream2;
char ch1;
char ch2;
stream1 = fopen(f1, "r");
stream2 = fopen(f2, "r");
if (stream1 == NULL || stream2 == NULL)
{
return false;
}
do
{
ch1 = fgetc(stream1);
ch2 = fgetc(stream2);
if (ch1 != ch2)
{
return false;
}
}
while (ch1 != EOF && ch2 != EOF);
fclose(stream1);
fclose(stream2);
return true;
}
static bool check_directory(const char *directory)
{
struct stat buf;
if (stat(directory, &buf) < 0)
{
debug("stat of %s failed: %s\n", directory, strerror(errno));
return false;
}
if (!S_ISDIR(buf.st_mode))
{
debug("%s exists but is not a directory\n", directory);
return false;
}
return true;
}
static void verify_directory(const char *directory)
{
struct stat buf;
if (stat(directory, &buf) < 0)
{
fprintf(stderr, "ERROR: stat of %s failed: %s\n",
directory, strerror(errno));
exit(EXIT_FAILURE);
}
if (!S_ISDIR(buf.st_mode))
{
fprintf(stderr, "ERROR: %s exists but is not a directory\n",
directory);
exit(EXIT_FAILURE);
}
}
static bool verify_optiondir(const char *directory)
{
struct stat buf;
if (stat(directory, &buf) < 0)
{
/* It may be okay if the directory does not exist */
/* It may be okay if the file does not exist */
int errcode = errno;
if (errcode == ENOENT)
{
debug("verify_optiondir: stat of %s failed: %s\n",
directory, strerror(errno));
return false;
}
else
{
fprintf(stderr, "ERROR: stat of %s failed: %s\n",
directory, strerror(errno));
exit(EXIT_FAILURE);
}
}
if (!S_ISDIR(buf.st_mode))
{
fprintf(stderr, "ERROR: %s exists but is not a directory\n",
directory);
exit(EXIT_FAILURE);
}
return true;
}
static bool verify_file(const char *path)
{
struct stat buf;
if (stat(path, &buf) < 0)
{
/* It may be okay if the file does not exist */
int errcode = errno;
if (errcode == ENOENT)
{
debug("verify_file: stat of %s failed: %s\n",
path, strerror(errno));
return false;
}
else
{
fprintf(stderr, "ERROR: stat of %s failed: %s\n",
path, strerror(errno));
exit(EXIT_FAILURE);
}
}
if (!S_ISREG(buf.st_mode))
{
fprintf(stderr, "ERROR: %s exists but is not a regular file\n", path);
exit(EXIT_FAILURE);
}
return true;
}
static void find_topdir(void)
{
char *currdir;
/* Get and verify the top-level NuttX directory */
/* First get the current directory. We expect this to be either
* the nuttx root directory or the tools subdirectory.
*/
if (getcwd(g_buffer, BUFFER_SIZE) == NULL)
{
fprintf(stderr, "ERROR: getcwd failed: %s\n", strerror(errno));
exit(EXIT_FAILURE);
}
/* Assume that we are in the tools sub-directory and the directory above
* is the nuttx root directory.
*/
currdir = strdup(g_buffer);
g_topdir = strdup(dirname(g_buffer));
debug("get_topdir: Checking parent directory: %s\n", g_topdir);
verify_directory(g_topdir);
/* Check if the current directory is the nuttx root directory.
* If so, then the tools directory should be a sub-directory.
*/
snprintf(g_buffer, BUFFER_SIZE, "%s%ctools", currdir, g_delim);
debug("get_topdir: Checking topdir/tools=%s\n", g_buffer);
if (check_directory(g_buffer))
{
/* There is a tools sub-directory under the current directory.
* We must have already been in the nuttx root directory. We
* will find out for sure in later tests.
*/
free(g_topdir);
g_topdir = currdir;
}
else
{
/* Yes, we are probably in the tools/ sub-directory */
free(currdir);
if (chdir(g_topdir) < 0)
{
fprintf(stderr, "ERROR: Failed to ch to %s\n", g_topdir);
exit(EXIT_FAILURE);
}
}
}
static void config_search(const char *boarddir,
config_callback callback, void *data)
{
DIR *dir;
struct dirent *dp;
struct stat buf;
char *parent;
char *child;
/* Skip over any leading '/' or '\\'. This happens on the first second
* call because the starting boarddir is ""
*/
if (boarddir[0] == g_delim)
{
boarddir++;
}
/* Get the full directory path and open it */
snprintf(g_buffer, BUFFER_SIZE, "%s%c%s", g_configtop, g_delim, boarddir);
dir = opendir(g_buffer);
if (!dir)
{
fprintf(stderr, "ERROR: Could not open %s: %s\n",
g_buffer, strerror(errno));
return;
}
/* Make a copy of the path to the directory */
parent = strdup(g_buffer);
/* Visit each entry in the directory */
while ((dp = readdir(dir)) != NULL)
{
/* Ignore directory entries that start with '.' */
if (dp->d_name[0] == '.')
{
continue;
}
/* Get a properly terminated copy of d_name (if d_name is long it may
* not include a NUL terminator.
*/
child = strndup(dp->d_name, NAME_MAX);
/* Get the full path to d_name and stat the file/directory */
snprintf(g_buffer, BUFFER_SIZE, "%s%c%s", parent, g_delim, child);
if (stat(g_buffer, &buf) < 0)
{
fprintf(stderr, "ERROR: stat of %s failed: %s\n",
g_buffer, strerror(errno));
free(child);
continue;
}
/* If it is a directory, then recurse */
if (S_ISDIR(buf.st_mode))
{
char *tmppath;
snprintf(g_buffer, BUFFER_SIZE, "%s%c%s",
boarddir, g_delim, child);
tmppath = strdup(g_buffer);
config_search(tmppath, callback, data);
free(tmppath);
}
/* If it is a regular file named 'defconfig' then we have found a
* configuration directory. We could terminate the search in this case
* because we do not expect sub-directories within configuration
* directories.
*/
else if (S_ISREG(buf.st_mode) && strcmp("defconfig", child) == 0)
{
char *archname;
char *chipname;
char *boardname;
char *configname;
char *delim;
/* Get the board directory near the beginning of the 'boarddir':
* <archdir>/<chipdir>/<boarddir>/configs/<configdir>
*/
/* Make a modifiable copy */
strncpy(g_buffer, boarddir, BUFFER_SIZE - 1);
/* Save the <archdir> */
archname = g_buffer;
delim = strchr(g_buffer, g_delim);
if (delim == NULL)
{
debug("ERROR: delimiter not found in path: %s\n", boarddir);
}
else
{
/* Save the <chipdir> */
*delim = '\0';
chipname = delim + 1;
delim = strchr(chipname, g_delim);
if (delim == NULL)
{
debug("ERROR: delimiter not found in path: %s\n",
chipname);
}
else
{
/* Save the <boardir> */
*delim = '\0';
boardname = delim + 1;
delim = strchr(boardname, g_delim);
if (delim == NULL)
{
debug("ERROR: delimiter not found in path: %s\n",
boardname);
}
else
{
/* Save the <configdir> */
*delim = '\0';
delim = strrchr(delim + 1, g_delim);
if (delim == NULL)
{
debug("ERROR: directory not found in path: %s\n",
boardname);
}
else
{
configname = delim + 1;
callback(boarddir, archname, chipname,
boardname, configname, data);
}
}
}
}
}
free(child);
}
free(parent);
closedir(dir);
}
static void archname_callback(const char *boarddir, const char *archname,
const char *chipname, const char *boardname,
const char *configname, void *data)
{
if (strcmp(g_boarddir, boardname) == 0 &&
strcmp(g_configdir, configname) == 0)
{
g_archdir = strdup(archname);
g_chipdir = strdup(chipname);
}
}
static void find_archname(void)
{
config_search("", archname_callback, NULL);
if (g_archdir == NULL || g_chipdir == NULL)
{
g_archdir = "unknown";
g_chipdir = "unknown";
}
}
static void enumerate_callback(const char *boarddir, const char *archname,
const char *chipname, const char *boardname,
const char *configname, void *data)
{
fprintf(stderr, " %s:%s\n", boardname, configname);
}
static void enumerate_configs(void)
{
fprintf(stderr, "Options for <board-name>:<config-name> include:\n\n");
config_search("", enumerate_callback, NULL);
}
static void check_configdir(void)
{
if (g_configpath && verify_optiondir(g_configpath))
{
/* Get the path to the custom board scripts directory */
snprintf(g_buffer, BUFFER_SIZE, "%s%c..%c..%cscripts",
g_configpath, g_delim, g_delim, g_delim);
if (verify_optiondir(g_buffer))
{
g_scriptspath = strdup(g_buffer);
}
}
else
{
/* Get the path to the top level configuration directory: boards/ */
snprintf(g_buffer, BUFFER_SIZE, "%s%cboards", g_topdir, g_delim);
debug("check_configdir: Checking configtop=%s\n", g_buffer);
verify_directory(g_buffer);
g_configtop = strdup(g_buffer);
/* Get and verify the path to the selected configuration:
* boards/<archdir>/<chipdir>/<boarddir>/configs/<configdir>
*/
find_archname();
snprintf(g_buffer, BUFFER_SIZE, "%s%cboards%c%s%c%s%c%s%cconfigs%c%s",
g_topdir, g_delim, g_delim, g_archdir, g_delim, g_chipdir,
g_delim, g_boarddir, g_delim, g_delim, g_configdir);
debug("check_configdir: Checking configpath=%s\n", g_buffer);
if (!verify_optiondir(g_buffer))
{
fprintf(stderr, "ERROR: No configuration at %s\n", g_buffer);
fprintf(stderr, "Run tools/configure -L"
" to list available configurations.\n");
exit(EXIT_FAILURE);
}
g_configpath = strdup(g_buffer);
/* Get and verify the path to the scripts directory:
* boards/<archdir>/<chipdir>/<boarddir>/scripts
*/
snprintf(g_buffer, BUFFER_SIZE, "%s%cboards%c%s%c%s%c%s%cscripts",
g_topdir, g_delim, g_delim, g_archdir, g_delim,
g_chipdir, g_delim, g_boarddir, g_delim);
debug("check_configdir: Checking scripts path=%s\n", g_buffer);
g_scriptspath = NULL;
if (verify_optiondir(g_buffer))
{
g_scriptspath = strdup(g_buffer);
}
}
}
static void check_configured(void)
{
/* If we are already configured then there will be a .config and
* a Make.defs file in the top-level directory.
*/
snprintf(g_buffer, BUFFER_SIZE, "%s%c.config", g_topdir, g_delim);
debug("check_configured: Checking %s\n", g_buffer);
if (!verify_file(g_buffer))
{
return;
}
if (g_enforce)
{
run_make("distclean");
}
else
{
char *defcfgpath = NULL;
snprintf(g_buffer, BUFFER_SIZE, "%s%cdefconfig",
g_configpath, g_delim);
defcfgpath = strdup(g_buffer);
snprintf(g_buffer, BUFFER_SIZE, "%s%cdefconfig",
g_topdir, g_delim);
if (filecmp(g_buffer, defcfgpath))
{
fprintf(stderr, "No configuration change.\n");
free(defcfgpath);
exit(EXIT_SUCCESS);
}
else
{
free(defcfgpath);
if (g_distclean)
{
run_make("distclean");
}
else
{
fprintf(stderr, "Already configured!\n");
fprintf(stderr, "Please 'make distclean' and try again.\n");
exit(EXIT_FAILURE);
}
}
}
}
static void read_configfile(void)
{
FILE *stream;
snprintf(g_buffer, BUFFER_SIZE, "%s%cdefconfig", g_configpath, g_delim);
stream = fopen(g_buffer, "r");
if (!stream)
{
fprintf(stderr, "ERROR: failed to open %s for reading: %s\n",
g_buffer, strerror(errno));
exit(EXIT_FAILURE);
}
parse_file(stream, &g_configvars);
fclose(stream);
}
static void read_versionfile(void)
{
FILE *stream;
snprintf(g_buffer, BUFFER_SIZE, "%s%c.version", g_topdir, g_delim);
stream = fopen(g_buffer, "r");
if (!stream)
{
/* It may not be an error if there is no .version file */
debug("Failed to open %s for reading: %s\n",
g_buffer, strerror(errno));
}
else
{
parse_file(stream, &g_versionvars);
fclose(stream);
}
}
static void get_verstring(void)
{
struct variable_s *var;
if (g_versionvars)
{
var = find_variable("CONFIG_VERSION_STRING", g_versionvars);
if (var && var->val)
{
g_verstring = strdup(var->val);
}
}
debug("get_verstring: Version string=%s\n", g_verstring);
}
static bool verify_appdir(const char *appdir)
{
/* Does this directory exist? */
snprintf(g_buffer, BUFFER_SIZE, "%s%c%s", g_topdir, g_delim, appdir);
debug("verify_appdir: Checking apppath=%s\n", g_buffer);
if (verify_optiondir(g_buffer))
{
/* Yes.. Use this application directory path */
g_appdir = strdup(appdir);
g_apppath = strdup(g_buffer);
return true;
}
debug("verify_appdir: apppath=%s does not exist\n", g_buffer);
return false;
}
static void check_appdir(void)
{
char tmp[16];
/* Get and verify the full path to the application directory */
/* Was the appdir provided on the command line? */
debug("check_appdir: Command line appdir=%s\n",
g_appdir ? g_appdir : "<null>");
if (!g_appdir)
{
/* If no application directory was provided on the command line and we