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main: add --help support

feature/tap-sh
William Pitcock 2012-05-01 01:10:56 +00:00
parent f99ecae9e8
commit 60421ad27e
1 changed files with 40 additions and 0 deletions
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40
main.c
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@ -36,6 +36,7 @@
/* we are compatible with 0.26 of pkg-config */ /* we are compatible with 0.26 of pkg-config */
#define PKGCONFIG_VERSION_EQUIV "0.26" #define PKGCONFIG_VERSION_EQUIV "0.26"
static int want_help = 0;
static int want_version = 0; static int want_version = 0;
static int want_cflags = 0; static int want_cflags = 0;
static int want_libs = 0; static int want_libs = 0;
@ -244,6 +245,38 @@ version(void)
printf("%s %s\n", PACKAGE_NAME, PACKAGE_VERSION); printf("%s %s\n", PACKAGE_NAME, PACKAGE_VERSION);
} }
static void
usage(void)
{
printf("usage: %s [OPTIONS] [LIBRARIES]\n", PACKAGE_NAME);
printf("\nbasic options:\n\n");
printf(" --help this message\n");
printf(" --version print pkgconf version to stdout\n");
printf(" --atleast-pkgconfig-version check whether or not pkgconf is compatible\n");
printf(" with a specified pkg-config version\n");
printf("\nchecking specific pkg-config database entries:\n\n");
printf(" --atleast-version require a specific version of a module\n");
printf(" --exists check whether or not a module exists\n");
printf(" --maximum-traverse-depth maximum allowed depth for dependency graph\n");
printf(" --static be more aggressive when computing dependency graph\n");
printf(" (for static linking)\n");
printf("\nquerying specific pkg-config database fields:\n\n");
printf(" --variable=varname print specified variable entry to stdout\n");
printf(" --cflags print required CFLAGS to stdout\n");
printf(" --libs print required linker flags to stdout\n");
printf(" --print-requires print required dependency frameworks to stdout\n");
printf(" --print-variables print all known variables in module to stdout\n");
printf(" --digraph print entire dependency graph in graphviz 'dot' format\n");
printf("\nreport bugs to <%s>.\n", PACKAGE_BUGREPORT);
}
int int
main(int argc, char *argv[]) main(int argc, char *argv[])
{ {
@ -267,6 +300,7 @@ main(int argc, char *argv[])
{ "print-requires", no_argument, &want_requires, 13, }, { "print-requires", no_argument, &want_requires, 13, },
{ "print-variables", no_argument, &want_variables, 14, }, { "print-variables", no_argument, &want_variables, 14, },
{ "digraph", no_argument, &want_digraph, 15, }, { "digraph", no_argument, &want_digraph, 15, },
{ "help", no_argument, &want_help, 16, },
{ NULL, 0, NULL, 0 } { NULL, 0, NULL, 0 }
}; };
@ -297,6 +331,12 @@ main(int argc, char *argv[])
return EXIT_SUCCESS; return EXIT_SUCCESS;
} }
if (want_help)
{
usage();
return EXIT_SUCCESS;
}
if (want_static) if (want_static)
maximum_traverse_depth++; maximum_traverse_depth++;