cxl: Implement more device DVSEC decoding

[pciutils.git] / compat / getopt.c

diff --git a/compat/getopt.c b/compat/getopt.c
index 1d0beb76953e787571a3e3faa276279d82a2305c..f3ccb4b49781c59b886f922ce65b1ec2dc0d3b20 100644 (file)
--- a/compat/getopt.c
+++ b/compat/getopt.c
@@ -36,7 +36,6 @@
 #endif
 
 #include <stdio.h>
-#include <string.h>
 
 /* Comment out all this code if we are using the GNU C Library, and are not
    actually compiling the library itself.  This code is part of the GNU C
@@ -163,6 +162,8 @@ static enum {
 #include <string.h>
 #define        my_index        strchr
 #define        my_strlen       strlen
+#define        my_strcmp       strcmp
+#define        my_strncmp      strncmp
 #else
 
 /* Avoid depending on library functions or files
@@ -170,11 +171,11 @@ static enum {
 
 #if __STDC__ || defined(PROTO)
 extern char *getenv(const char *name);
-extern int strcmp(const char *s1, const char *s2);
-extern int strncmp(const char *s1, const char *s2, int n);
 
 static int my_strlen(const char *s);
 static char *my_index(const char *str, int chr);
+static int my_strncmp(const char *s1, const char *s2, int n);
+static int my_strcmp(const char *s1, const char *s2);
 #else
 extern char *getenv();
 #endif
@@ -197,6 +198,23 @@ static char *my_index(const char *str, int chr)
        return 0;
 }
 
+static int my_strncmp(const char *s1, const char *s2, int n)
+{
+       while (n && *s1 && (*s1 == *s2)) {
+               ++s1;
+               ++s2;
+               --n;
+       }
+       if (n == 0)
+               return 0;
+       return *(const unsigned char *)s1 - *(const unsigned char *)s2;
+}
+
+static int my_strcmp(const char *s1, const char *s2)
+{
+       return my_strncmp(s1, s2, -1);
+}
+
 #endif                         /* GNU C library.  */
 \f
 /* Handle permutation of arguments.  */
@@ -385,7 +403,7 @@ int _getopt_internal(int argc, char *const *argv, const char *optstring,
                   then exchange with previous non-options as if it were an option,
                   then skip everything else like a non-option.  */
 
-               if (optind != argc && !strcmp(argv[optind], "--")) {
+               if (optind != argc && !my_strcmp(argv[optind], "--")) {
                        optind++;
 
                        if (first_nonopt != last_nonopt && last_nonopt != optind)
@@ -445,7 +463,7 @@ int _getopt_internal(int argc, char *const *argv, const char *optstring,
 
                /* Test all options for either exact match or abbreviated matches.  */
                for (p = longopts, option_index = 0; p->name; p++, option_index++)
-                       if (!strncmp(p->name, nextchar, s - nextchar)) {
+                       if (!my_strncmp(p->name, nextchar, s - nextchar)) {
                                if (s - nextchar == my_strlen(p->name)) {
                                        /* Exact match found.  */
                                        pfound = p;