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, 15 insertions, 0 deletions

diff --git a/test/argp/argp-ex1.c b/test/argp/argp-ex1.c
new file mode 100644
index 000000000..7bb5f2241
--- /dev/null
+++ b/test/argp/argp-ex1.c
@@ -0,0 +1,15 @@
+/* Argp example #1 -- a minimal program using argp */
+
+/* This is (probably) the smallest possible program that
+   uses argp.  It won't do much except give an error
+   messages and exit when there are any arguments, and print
+   a (rather pointless) messages for --help.  */
+
+#include <stdlib.h>
+#include <argp.h>
+
+int main (int argc, char **argv)
+{
+  argp_parse (0, argc, argv, 0, 0, 0);
+  exit (0);
+}