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pkg-config/main.c
Dan Nicholson a15bb1e72e Cleanup local variable declarations 
Having the option entries within main and requiring the option variables
to be static is just wrong. Just declare them at file scope like every
other program does.
2012-12-11 11:59:40 -08:00

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/*
* Copyright (C) 2001, 2002 Red Hat Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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 GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "pkg.h"
#include "parse.h"
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <stdio.h>
#ifdef G_OS_WIN32
#define STRICT
#include <windows.h>
#undef STRICT
#endif
char *pcsysrootdir = NULL;
char *pkg_config_pc_path = NULL;
static int want_my_version = 0;
static int want_version = 0;
static int want_libs = 0;
static int want_cflags = 0;
static int want_l_libs = 0;
static int want_L_libs = 0;
static int want_other_libs = 0;
static int want_I_cflags = 0;
static int want_other_cflags = 0;
static int want_list = 0;
static int want_static_lib_list = ENABLE_INDIRECT_DEPS;
static int want_short_errors = 0;
static int want_uninstalled = 0;
static char *variable_name = NULL;
static int want_exists = 0;
static int want_provides = 0;
static int want_requires = 0;
static int want_requires_private = 0;
static char *required_atleast_version = NULL;
static char *required_exact_version = NULL;
static char *required_max_version = NULL;
static char *required_pkgconfig_version = NULL;
static int want_silence_errors = 0;
static int want_variable_list = 0;
static int want_debug_spew = 0;
static int want_verbose_errors = 0;
static int want_stdout_errors = 0;
void
debug_spew (const char *format, ...)
{
va_list args;
gchar *str;
FILE* stream;
g_return_if_fail (format != NULL);
if (!want_debug_spew)
return;
va_start (args, format);
str = g_strdup_vprintf (format, args);
va_end (args);
if (want_stdout_errors)
stream = stdout;
else
stream = stderr;
fputs (str, stream);
fflush (stream);
g_free (str);
}
void
verbose_error (const char *format, ...)
{
va_list args;
gchar *str;
FILE* stream;
g_return_if_fail (format != NULL);
if (!want_verbose_errors)
return;
va_start (args, format);
str = g_strdup_vprintf (format, args);
va_end (args);
if (want_stdout_errors)
stream = stdout;
else
stream = stderr;
fputs (str, stream);
fflush (stream);
g_free (str);
}
static gboolean
define_variable_cb (const char *opt, const char *arg, gpointer data,
GError **error)
{
char *varname;
char *varval;
char *tmp;
tmp = g_strdup (arg);
varname = tmp;
while (*varname && isspace ((guchar)*varname))
++varname;
varval = varname;
while (*varval && *varval != '=' && *varval != ' ')
++varval;
while (*varval && (*varval == '=' || *varval == ' '))
{
*varval = '\0';
++varval;
}
if (*varval == '\0')
{
fprintf (stderr, "--define-variable argument does not have a value "
"for the variable\n");
exit (1);
}
define_global_variable (varname, varval);
g_free (tmp);
return TRUE;
}
static gboolean
pkg_uninstalled (Package *pkg)
{
/* See if > 0 pkgs were uninstalled */
GList *tmp;
if (pkg->uninstalled)
return TRUE;
tmp = pkg->requires;
while (tmp != NULL)
{
Package *pkg = tmp->data;
if (pkg_uninstalled (pkg))
return TRUE;
tmp = g_list_next (tmp);
}
return FALSE;
}
void
print_hashtable_key (gpointer key,
gpointer value,
gpointer user_data)
{
printf("%s\n", (gchar*)key);
}
static void
init_pc_path (void)
{
#ifdef G_OS_WIN32
char *instdir, *lpath, *shpath;
instdir = g_win32_get_package_installation_directory_of_module (NULL);
if (instdir == NULL)
{
/* This only happens when GetModuleFilename() fails. If it does, that
* failure should be investigated and fixed.
*/
debug_spew ("g_win32_get_package_installation_directory_of_module failed\n");
return;
}
lpath = g_build_filename (instdir, "lib", "pkgconfig", NULL);
shpath = g_build_filename (instdir, "share", "pkgconfig", NULL);
pkg_config_pc_path = g_strconcat (lpath, G_SEARCHPATH_SEPARATOR_S, shpath,
NULL);
g_free (instdir);
g_free (lpath);
g_free (shpath);
#else
pkg_config_pc_path = PKG_CONFIG_PC_PATH;
#endif
}
static const GOptionEntry options_table[] = {
{ "version", 0, 0, G_OPTION_ARG_NONE, &want_my_version,
"output version of pkg-config", NULL },
{ "modversion", 0, 0, G_OPTION_ARG_NONE, &want_version,
"output version for package", NULL },
{ "atleast-pkgconfig-version", 0, 0, G_OPTION_ARG_STRING,
&required_pkgconfig_version,
"require given version of pkg-config", "VERSION" },
{ "libs", 0, 0, G_OPTION_ARG_NONE, &want_libs,
"output all linker flags", NULL },
{ "static", 0, 0, G_OPTION_ARG_NONE, &want_static_lib_list,
"output linker flags for static linking", NULL },
{ "short-errors", 0, 0, G_OPTION_ARG_NONE, &want_short_errors,
"print short errors", NULL },
{ "libs-only-l", 0, 0, G_OPTION_ARG_NONE, &want_l_libs,
"output -l flags", NULL },
{ "libs-only-other", 0, 0, G_OPTION_ARG_NONE, &want_other_libs,
"output other libs (e.g. -pthread)", NULL },
{ "libs-only-L", 0, 0, G_OPTION_ARG_NONE, &want_L_libs,
"output -L flags", NULL },
{ "cflags", 0, 0, G_OPTION_ARG_NONE, &want_cflags,
"output all pre-processor and compiler flags", NULL },
{ "cflags-only-I", 0, 0, G_OPTION_ARG_NONE, &want_I_cflags,
"output -I flags", NULL },
{ "cflags-only-other", 0, 0, G_OPTION_ARG_NONE, &want_other_cflags,
"output cflags not covered by the cflags-only-I option", NULL },
{ "variable", 0, 0, G_OPTION_ARG_STRING, &variable_name,
"get the value of variable named NAME", "NAME" },
{ "define-variable", 0, 0, G_OPTION_ARG_CALLBACK, &define_variable_cb,
"set variable NAME to VALUE", "NAME=VALUE" },
{ "exists", 0, 0, G_OPTION_ARG_NONE, &want_exists,
"return 0 if the module(s) exist", NULL },
{ "print-variables", 0, 0, G_OPTION_ARG_NONE, &want_variable_list,
"output list of variables defined by the module", NULL },
{ "uninstalled", 0, 0, G_OPTION_ARG_NONE, &want_uninstalled,
"return 0 if the uninstalled version of one or more module(s) "
"or their dependencies will be used", NULL },
{ "atleast-version", 0, 0, G_OPTION_ARG_STRING, &required_atleast_version,
"return 0 if the module is at least version VERSION", "VERSION" },
{ "exact-version", 0, 0, G_OPTION_ARG_STRING, &required_exact_version,
"return 0 if the module is at exactly version VERSION", "VERSION" },
{ "max-version", 0, 0, G_OPTION_ARG_STRING, &required_max_version,
"return 0 if the module is at no newer than version VERSION", "VERSION" },
{ "list-all", 0, 0, G_OPTION_ARG_NONE, &want_list,
"list all known packages", NULL },
{ "debug", 0, 0, G_OPTION_ARG_NONE, &want_debug_spew,
"show verbose debug information", NULL },
{ "print-errors", 0, 0, G_OPTION_ARG_NONE, &want_verbose_errors,
"show verbose information about missing or conflicting packages,"
"default if --cflags or --libs given on the command line", NULL },
{ "silence-errors", 0, 0, G_OPTION_ARG_NONE, &want_silence_errors,
"be silent about errors (default unless --cflags or --libs"
"given on the command line)", NULL },
{ "errors-to-stdout", 0, 0, G_OPTION_ARG_NONE, &want_stdout_errors,
"print errors from --print-errors to stdout not stderr", NULL },
{ "print-provides", 0, 0, G_OPTION_ARG_NONE, &want_provides,
"print which packages the package provides", NULL },
{ "print-requires", 0, 0, G_OPTION_ARG_NONE, &want_requires,
"print which packages the package requires", NULL },
{ "print-requires-private", 0, 0, G_OPTION_ARG_NONE, &want_requires_private,
"print which packages the package requires for static linking", NULL },
#ifdef G_OS_WIN32
{ "dont-define-prefix", 0, 0, G_OPTION_ARG_NONE, &dont_define_prefix,
"don't try to override the value of prefix for each .pc file found with "
"a guesstimated value based on the location of the .pc file", NULL },
{ "prefix-variable", 0, 0, G_OPTION_ARG_STRING, &prefix_variable,
"set the name of the variable that pkg-config automatically sets",
"PREFIX" },
{ "msvc-syntax", 0, 0, G_OPTION_ARG_NONE, &msvc_syntax,
"output -l and -L flags for the Microsoft compiler (cl)", NULL },
#endif
{ NULL, 0, 0, 0, NULL, NULL, NULL }
};
int
main (int argc, char **argv)
{
GString *str;
GList *packages = NULL;
FlagType flags = 0;
char *search_path;
char *pcbuilddir;
gboolean need_newline;
FILE *log = NULL;
GError *error = NULL;
GOptionContext *opt_context;
/* This is here so that we get debug spew from the start,
* during arg parsing
*/
if (getenv ("PKG_CONFIG_DEBUG_SPEW"))
{
want_debug_spew = TRUE;
want_verbose_errors = TRUE;
want_silence_errors = FALSE;
debug_spew ("PKG_CONFIG_DEBUG_SPEW variable enabling debug spew\n");
}
/* Get the built-in search path */
init_pc_path ();
if (pkg_config_pc_path == NULL)
{
/* Even when we override the built-in search path, we still use it later
* to add pc_path to the virtual pkg-config package.
*/
verbose_error ("Failed to get default search path\n");
exit (1);
}
search_path = getenv ("PKG_CONFIG_PATH");
if (search_path)
{
add_search_dirs(search_path, G_SEARCHPATH_SEPARATOR_S);
}
if (getenv("PKG_CONFIG_LIBDIR") != NULL)
{
add_search_dirs(getenv("PKG_CONFIG_LIBDIR"), G_SEARCHPATH_SEPARATOR_S);
}
else
{
add_search_dirs(pkg_config_pc_path, G_SEARCHPATH_SEPARATOR_S);
}
pcsysrootdir = getenv ("PKG_CONFIG_SYSROOT_DIR");
if (pcsysrootdir)
{
define_global_variable ("pc_sysrootdir", pcsysrootdir);
}
else
{
define_global_variable ("pc_sysrootdir", "/");
}
pcbuilddir = getenv ("PKG_CONFIG_TOP_BUILD_DIR");
if (pcbuilddir)
{
define_global_variable ("pc_top_builddir", pcbuilddir);
}
else
{
/* Default appropriate for automake */
define_global_variable ("pc_top_builddir", "$(top_builddir)");
}
if (getenv ("PKG_CONFIG_DISABLE_UNINSTALLED"))
{
debug_spew ("disabling auto-preference for uninstalled packages\n");
disable_uninstalled = TRUE;
}
/* Parse options */
opt_context = g_option_context_new (NULL);
g_option_context_add_main_entries (opt_context, options_table, NULL);
if (!g_option_context_parse(opt_context, &argc, &argv, &error))
{
fprintf (stderr, "%s\n", error->message);
return 1;
}
/* construct Libs/Cflags mask */
if (want_cflags)
flags |= CFLAGS_ANY;
if (want_I_cflags)
flags |= CFLAGS_I;
if (want_other_cflags)
flags |= CFLAGS_OTHER;
if (want_libs)
flags |= LIBS_ANY;
if (want_l_libs)
flags |= LIBS_l;
if (want_L_libs)
flags |= LIBS_L;
if (want_other_libs)
flags |= LIBS_OTHER;
/* Error printing is determined as follows:
* - for --cflags, --libs, etc. it's on by default
* and --silence-errors can turn it off
* - for --exists, --max-version, etc. and no options
* at all, it's off by default and --print-errors
* will turn it on
*/
if (want_my_version ||
want_version ||
want_libs ||
want_cflags ||
want_l_libs ||
want_L_libs ||
want_other_libs ||
want_I_cflags ||
want_other_cflags ||
want_list ||
want_variable_list)
{
debug_spew ("Error printing enabled by default due to use of --version, --libs, --cflags, --libs-only-l, --libs-only-L, --libs-only-other, --cflags-only-I, --cflags-only-other or --list. Value of --silence-errors: %d\n", want_silence_errors);
if (want_silence_errors && getenv ("PKG_CONFIG_DEBUG_SPEW") == NULL)
want_verbose_errors = FALSE;
else
want_verbose_errors = TRUE;
}
else
{
debug_spew ("Error printing disabled by default, value of --print-errors: %d\n",
want_verbose_errors);
/* Leave want_verbose_errors unchanged, reflecting --print-errors */
}
if (want_verbose_errors)
debug_spew ("Error printing enabled\n");
else
debug_spew ("Error printing disabled\n");
if (want_static_lib_list)
enable_private_libs();
else
disable_private_libs();
/* honor Requires.private if any Cflags are requested or any static
* libs are requested */
if (want_I_cflags || want_other_cflags || want_cflags ||
want_requires_private || want_exists ||
(want_static_lib_list && (want_libs || want_l_libs || want_L_libs)))
enable_requires_private();
/* ignore Requires if no Cflags or Libs are requested */
if (!want_I_cflags && !want_other_cflags && !want_cflags &&
!want_libs && !want_l_libs && !want_L_libs && !want_requires &&
!want_exists)
disable_requires();
if (want_my_version)
{
printf ("%s\n", VERSION);
return 0;
}
if (required_pkgconfig_version)
{
if (compare_versions (VERSION, required_pkgconfig_version) >= 0)
return 0;
else
return 1;
}
package_init ();
if (want_list)
{
print_package_list ();
return 0;
}
/* Collect packages from remaining args */
str = g_string_new ("");
while (argc > 1)
{
argc--;
argv++;
g_string_append (str, *argv);
g_string_append (str, " ");
}
g_option_context_free (opt_context);
g_strstrip (str->str);
if (getenv("PKG_CONFIG_LOG") != NULL)
{
log = fopen (getenv ("PKG_CONFIG_LOG"), "a");
if (log == NULL)
{
fprintf (stderr, "Cannot open log file: %s\n",
getenv ("PKG_CONFIG_LOG"));
exit (1);
}
}
{
gboolean failed = FALSE;
GList *reqs;
GList *iter;
reqs = parse_module_list (NULL, str->str,
"(command line arguments)");
iter = reqs;
while (iter != NULL)
{
Package *req;
RequiredVersion *ver = iter->data;
/* override requested versions with cmdline options */
if (required_exact_version)
{
g_free (ver->version);
ver->comparison = EQUAL;
ver->version = g_strdup (required_exact_version);
}
else if (required_atleast_version)
{
g_free (ver->version);
ver->comparison = GREATER_THAN_EQUAL;
ver->version = g_strdup (required_atleast_version);
}
else if (required_max_version)
{
g_free (ver->version);
ver->comparison = LESS_THAN_EQUAL;
ver->version = g_strdup (required_max_version);
}
if (want_short_errors)
req = get_package_quiet (ver->name);
else
req = get_package (ver->name);
if (log != NULL)
{
if (req == NULL)
fprintf (log, "%s NOT-FOUND", ver->name);
else
fprintf (log, "%s %s %s", ver->name,
comparison_to_str (ver->comparison),
(ver->version == NULL) ? "(null)" : ver->version);
fprintf (log, "\n");
}
if (req == NULL)
{
failed = TRUE;
verbose_error ("No package '%s' found\n", ver->name);
goto nextiter;
}
if (!version_test (ver->comparison, req->version, ver->version))
{
failed = TRUE;
verbose_error ("Requested '%s %s %s' but version of %s is %s\n",
ver->name,
comparison_to_str (ver->comparison),
ver->version,
req->name,
req->version);
if (req->url)
verbose_error ("You may find new versions of %s at %s\n",
req->name, req->url);
goto nextiter;
}
packages = g_list_prepend (packages, req);
nextiter:
iter = g_list_next (iter);
}
if (log != NULL)
{
fclose (log);
}
if (failed) {
return 1;
}
}
g_string_free (str, TRUE);
packages = g_list_reverse (packages);
if (packages == NULL)
{
fprintf (stderr, "Must specify package names on the command line\n");
exit (1);
}
if (want_exists)
return 0; /* if we got here, all the packages existed. */
if (want_variable_list)
{
GList *tmp;
tmp = packages;
while (tmp != NULL)
{
Package *pkg = tmp->data;
if (pkg->vars != NULL)
g_hash_table_foreach(pkg->vars,
&print_hashtable_key,
NULL);
tmp = g_list_next (tmp);
if (tmp) printf ("\n");
}
need_newline = FALSE;
}
if (want_uninstalled)
{
/* See if > 0 pkgs (including dependencies recursively) were uninstalled */
GList *tmp;
tmp = packages;
while (tmp != NULL)
{
Package *pkg = tmp->data;
if (pkg_uninstalled (pkg))
return 0;
tmp = g_list_next (tmp);
}
return 1;
}
if (want_version)
{
GList *tmp;
tmp = packages;
while (tmp != NULL)
{
Package *pkg = tmp->data;
printf ("%s\n", pkg->version);
tmp = g_list_next (tmp);
}
}
if (want_provides)
{
GList *tmp;
tmp = packages;
while (tmp != NULL)
{
Package *pkg = tmp->data;
char *key;
key = pkg->key;
while (*key == '/')
key++;
if (strlen(key) > 0)
printf ("%s = %s\n", key, pkg->version);
tmp = g_list_next (tmp);
}
}
if (want_requires)
{
GList *pkgtmp;
for (pkgtmp = packages; pkgtmp != NULL; pkgtmp = g_list_next (pkgtmp))
{
Package *pkg = pkgtmp->data;
GList *reqtmp;
/* process Requires: */
for (reqtmp = pkg->requires; reqtmp != NULL; reqtmp = g_list_next (reqtmp))
{
Package *deppkg = reqtmp->data;
RequiredVersion *req;
req = g_hash_table_lookup(pkg->required_versions, deppkg->key);
if ((req == NULL) || (req->comparison == ALWAYS_MATCH))
printf ("%s\n", deppkg->key);
else
printf ("%s %s %s\n", deppkg->key,
comparison_to_str(req->comparison),
req->version);
}
}
}
if (want_requires_private)
{
GList *pkgtmp;
for (pkgtmp = packages; pkgtmp != NULL; pkgtmp = g_list_next (pkgtmp))
{
Package *pkg = pkgtmp->data;
GList *reqtmp;
/* process Requires.private: */
for (reqtmp = pkg->requires_private; reqtmp != NULL; reqtmp = g_list_next (reqtmp))
{
Package *deppkg = reqtmp->data;
RequiredVersion *req;
if (g_list_find (pkg->requires, reqtmp->data))
continue;
req = g_hash_table_lookup(pkg->required_versions, deppkg->key);
if ((req == NULL) || (req->comparison == ALWAYS_MATCH))
printf ("%s\n", deppkg->key);
else
printf ("%s %s %s\n", deppkg->key,
comparison_to_str(req->comparison),
req->version);
}
}
}
/* Print all flags; then print a newline at the end. */
need_newline = FALSE;
if (variable_name)
{
char *str = packages_get_var (packages, variable_name);
printf ("%s", str);
g_free (str);
need_newline = TRUE;
}
if (flags != 0)
{
char *str = packages_get_flags (packages, flags);
printf ("%s", str);
g_free (str);
need_newline = TRUE;
}
if (need_newline)
printf ("\n");
return 0;
}
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