Add argp implementation

Argp is an advanced support for parsing unix-style argument vectors.
In addition to the common getopt interface, it provides automatic
response
to `--help' and `--version' options and use of custom parser in
conjunction
with argp native option parser, among others.
Argp support is required by elfutils package and prelink.

In uClibc argp functionalities has been moved from C library to
libuargp.so
Further the libc.so linker script contains an AS_NEEDED entry so that
it doesn't need to link libuargp.so explicitely.

Disable argp test if feature disabled.

Signed-off-by: Salvatore Cro <salvatore.cro@st.com>
Signed-off-by: Filippo Arcidiacono <filippo.arcidiacono@st.com>
Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Waldemar Brodkorb <wbx@uclibc-ng.org>

1 files changed, 18 insertions, 1 deletions

diff --git a/libc/unistd/getopt.c b/libc/unistd/getopt.c
index f63482bc8..db5e12c59 100644
--- a/libc/unistd/getopt.c
+++ b/libc/unistd/getopt.c
@@ -105,7 +105,7 @@
    they can distinguish the relative order of options and other arguments.  */
 
 #include <getopt.h>
-#include "getopt_int.h"
+#include <bits/getopt_int.h>
 
 
 /* For communication from `getopt' to the caller.
@@ -1170,6 +1170,15 @@ getopt_long (int argc, char *const *argv, const char *options,
   return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
 }
 
+int
+_getopt_long_r (int argc, char *const *argv, const char *options,
+               const struct option *long_options, int *opt_index,
+               struct _getopt_data *d)
+{
+  return _getopt_internal_r (argc, argv, options, long_options, opt_index,
+                            0, d);
+}
+
 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
    If an option that starts with '-' (not '--') doesn't match a long option,
    but does match a short option, it is parsed as a short option
@@ -1183,4 +1192,12 @@ getopt_long_only (int argc, char *const *argv, const char *options,
 }
 #endif /* __UCLIBC_HAS_GETOPT_LONG__ */
 
+int
+_getopt_long_only_r (int argc, char *const *argv, const char *options,
+                    const struct option *long_options, int *opt_index,
+                    struct _getopt_data *d)
+{
+  return _getopt_internal_r (argc, argv, options, long_options, opt_index, 1, d);
+}
+
 #endif	/* Not ELIDE_CODE.  */