cksum: use more accurate program name in single binary mode

Following commit v9.9-109-gcd5229222

* src/cksum.c (PROGRAM_NAME): In legacy mode, i.e., when built
as a single binary, set the PROGRAM_NAME dynamically based on
the selected digest type.  This is significant in --help
to ensure the correct texinfo node is referenced, and in
--version to ensure the correct utility name is output.

diff --git a/src/cksum.c b/src/cksum.c
index c6e4378589b3b10d00c3fb42e6015c4e94291cfb..3abc71dcad3979e73f269169bc5481c64e02c88b 100644 (file)
--- a/src/cksum.c
+++ b/src/cksum.c
@@ -77,7 +77,6 @@
 #elif HASH_ALGO_CKSUM
 # define MAX_DIGEST_BITS 512
 # define MAX_DIGEST_ALIGN 8
-# define PROGRAM_NAME "cksum"
 # define DIGEST_TYPE_STRING algorithm_tags[cksum_algorithm]
 # define DIGEST_STREAM cksumfns[cksum_algorithm]
 # define DIGEST_OUT cksum_output_fns[cksum_algorithm]
@@ -139,6 +138,17 @@
 # define DIGEST_OUT output_file
 #endif
 
+#if HASH_ALGO_CKSUM
+# define PROGRAM_NAME (!legacy_mode ? "cksum"                   \
+                       : cksum_algorithm == md5 ? "md5sum"      \
+                       : cksum_algorithm == sha1 ? "sha1sum"    \
+                       : cksum_algorithm == sha224 ? "sha224sum" \
+                       : cksum_algorithm == sha256 ? "sha256sum" \
+                       : cksum_algorithm == sha384 ? "sha384sum" \
+                       : cksum_algorithm == sha512 ? "sha512sum" \
+                       : "cksum")
+#endif
+
 #if HASH_ALGO_SUM
 # define AUTHORS \
   proper_name ("Kayvan Aghaiepour"), \