[PATCH] ipu3: Use posix basename

[Khem Raj]

musl does not implement GNU basename extention and with latest musl
the prototype from string.h is also removed [1] which now results in
compile errors e.g.

../git/utils/ipu3/ipu3-pack.c:21:47: error: call to undeclared function 'basename'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]

These utilities are using this function in usage() which is used just
before program exit. Always use the basename APIs from libgen.h which is
posix implementation

[1] https://git.musl-libc.org/cgit/musl/commit/?id=725e17ed6dff4d0cd22487bb64470881e86a92e7

Signed-off-by: Khem Raj <raj.khem at gmail.com>
---
 utils/ipu3/ipu3-pack.c   | 4 ++--
 utils/ipu3/ipu3-unpack.c | 3 ++-
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/utils/ipu3/ipu3-pack.c b/utils/ipu3/ipu3-pack.c
index decbfc6c..23d2db8b 100644
--- a/utils/ipu3/ipu3-pack.c
+++ b/utils/ipu3/ipu3-pack.c
@@ -8,6 +8,7 @@
 
 #include <errno.h>
 #include <fcntl.h>
+#include <libgen.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <string.h>
@@ -15,9 +16,8 @@
 #include <sys/types.h>
 #include <unistd.h>
 
-static void usage(const char *argv0)
+static void usage(char *argv0)
 {
-
 	printf("Usage: %s input-file output-file\n", basename(argv0));
 	printf("Convert unpacked RAW10 Bayer data to the IPU3 packed Bayer formats\n");
 	printf("If the output-file '-', output data will be written to standard output\n");
diff --git a/utils/ipu3/ipu3-unpack.c b/utils/ipu3/ipu3-unpack.c
index 9d2c1200..1505a970 100644
--- a/utils/ipu3/ipu3-unpack.c
+++ b/utils/ipu3/ipu3-unpack.c
@@ -8,6 +8,7 @@
 
 #include <errno.h>
 #include <fcntl.h>
+#include <libgen.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <string.h>
@@ -15,7 +16,7 @@
 #include <sys/types.h>
 #include <unistd.h>
 
-static void usage(const char *argv0)
+static void usage(char *argv0)
 {
 	printf("Usage: %s input-file output-file\n", basename(argv0));
 	printf("Unpack the IPU3 raw Bayer format to 16-bit Bayer\n");
-- 
2.44.0