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| author | Michal Marek <mmarek@suse.cz> | 2011-02-17 17:13:54 +0300 |
|---|---|---|
| committer | Michal Marek <mmarek@suse.cz> | 2011-02-21 15:35:17 +0300 |
| commit | b7bd182176960fdd139486cadb9962b39f8a2b50 (patch) | |
| tree | dfd9a501ff513e40800ef404ce3af5b62690cc62 | |
| parent | 0f54088aac3fc744cae0cbc4f021fc377e48a00c (diff) | |
| download | linux-b7bd182176960fdd139486cadb9962b39f8a2b50.tar.xz | |
fixdep: Do not record dependency on the source file itself
The dependency is already expressed by the Makefiles, storing it in the
.cmd file breaks build if a .c file is replaced by .S or vice versa,
because the .cmd file contains
foo/bar.o: foo/bar.c ...
foo/bar.c ... :
so the foo/bar.c -> foo/bar.o rule triggers even if there is no
foo/bar.c anymore.
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Michal Marek <mmarek@suse.cz>
| -rw-r--r-- | scripts/basic/fixdep.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/scripts/basic/fixdep.c b/scripts/basic/fixdep.c index c9a16abacab4..6c94c6ce2925 100644 --- a/scripts/basic/fixdep.c +++ b/scripts/basic/fixdep.c @@ -315,6 +315,7 @@ static void parse_dep_file(void *map, size_t len) char *end = m + len; char *p; char s[PATH_MAX]; + int first; p = strchr(m, ':'); if (!p) { @@ -327,6 +328,7 @@ static void parse_dep_file(void *map, size_t len) clear_config(); + first = 1; while (m < end) { while (m < end && (*m == ' ' || *m == '\\' || *m == '\n')) m++; @@ -340,9 +342,17 @@ static void parse_dep_file(void *map, size_t len) if (strrcmp(s, "include/generated/autoconf.h") && strrcmp(s, "arch/um/include/uml-config.h") && strrcmp(s, ".ver")) { - printf(" %s \\\n", s); + /* + * Do not output the first dependency (the + * source file), so that kbuild is not confused + * if a .c file is rewritten into .S or vice + * versa. + */ + if (!first) + printf(" %s \\\n", s); do_config_file(s); } + first = 0; m = p + 1; } printf("\n%s: $(deps_%s)\n\n", target, target); |