fixdep: accept extra dependencies on stdin

... and merge them in the list of parsed dependencies.

Signed-off-by: Nicolas Pitre <nico@linaro.org>

1 files changed, 45 insertions, 15 deletions

diff --git a/scripts/basic/fixdep.c b/scripts/basic/fixdep.c
index caef815d1743..7e90a1f7de0f 100644
--- a/scripts/basic/fixdep.c
+++ b/scripts/basic/fixdep.c
@@ -120,13 +120,15 @@
 #define INT_NFIG ntohl(0x4e464947)
 #define INT_FIG_ ntohl(0x4649475f)
 
+int insert_extra_deps;
 char *target;
 char *depfile;
 char *cmdline;
 
 static void usage(void)
 {
-        fprintf(stderr, "Usage: fixdep <depfile> <target> <cmdline>\n");
+        fprintf(stderr, "Usage: fixdep [-e] <depfile> <target> <cmdline>\n");
+        fprintf(stderr, " -e  insert extra dependencies given on stdin\n");
         exit(1);
 }
 
@@ -138,6 +140,40 @@ static void print_cmdline(void)
         printf("cmd_%s := %s\n\n", target, cmdline);
 }
 
+/*
+ * Print out a dependency path from a symbol name
+ */
+static void print_config(const char *m, int slen)
+{
+        int c, i;
+
+        printf("    $(wildcard include/config/");
+        for (i = 0; i < slen; i++) {
+                c = m[i];
+                if (c == '_')
+                        c = '/';
+                else
+                        c = tolower(c);
+                putchar(c);
+        }
+        printf(".h) \\\n");
+}
+
+static void do_extra_deps(void)
+{
+        if (insert_extra_deps) {
+                char buf[80];
+                while(fgets(buf, sizeof(buf), stdin)) {
+                        int len = strlen(buf);
+                        if (len < 2 || buf[len-1] != '\n') {
+                                fprintf(stderr, "fixdep: bad data on stdin\n");
+                                exit(1);
+                        }
+                        print_config(buf, len-1);
+                }
+        }
+}
+
 struct item {
         struct item     *next;
         unsigned int    len;
@@ -197,23 +233,12 @@ static void define_config(const char *name, int len, unsigned int hash)
 static void use_config(const char *m, int slen)
 {
         unsigned int hash = strhash(m, slen);
-        int c, i;
 
         if (is_defined_config(m, slen, hash))
             return;
 
         define_config(m, slen, hash);
-
-        printf("    $(wildcard include/config/");
-        for (i = 0; i < slen; i++) {
-                c = m[i];
-                if (c == '_')
-                        c = '/';
-                else
-                        c = tolower(c);
-                putchar(c);
-        }
-        printf(".h) \\\n");
+        print_config(m, slen);
 }
 
 static void parse_config_file(const char *map, size_t len)
@@ -250,7 +275,7 @@ static void parse_config_file(const char *map, size_t len)
         }
 }
 
-/* test is s ends in sub */
+/* test if s ends in sub */
 static int strrcmp(const char *s, const char *sub)
 {
         int slen = strlen(s);
@@ -378,6 +403,8 @@ static void parse_dep_file(void *map, size_t len)
                 exit(1);
         }
 
+        do_extra_deps();
+
         printf("\n%s: $(deps_%s)\n\n", target, target);
         printf("$(deps_%s):\n", target);
 }
@@ -434,7 +461,10 @@ int main(int argc, char *argv[])
 {
         traps();
 
-        if (argc != 4)
+        if (argc == 5 && !strcmp(argv[1], "-e")) {
+                insert_extra_deps = 1;
+                argv++;
+        } else if (argc != 4)
                 usage();
 
         depfile = argv[1];