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tools build: Make fixdep parsing wait for last target

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The fixdep tool, among other things, replaces the target of the object
in the gcc generated dependency output file.

The parsing code assumes there's only single target in the rule but this
is not always the case as described in here:

  https://gcc.gnu.org/ml/gcc-help/2016-11/msg00099.html

Make the fixdep code smart enough to skip all the possible targets.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Peter Foley <pefoley2@pefoley.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/20161201130025.GA16430@krava
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2016-12-01 14:00:25 +01:00 committed by Arnaldo Carvalho de Melo
parent e7af7b1512
commit 1cd6472e3f
1 changed files with 3 additions and 2 deletions
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5
tools/build/fixdep.c
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@ -49,7 +49,7 @@ static void parse_dep_file(void *map, size_t len)
char *end = m + len;
char *p;
char s[PATH_MAX];
int is_target;
int is_target, has_target = 0;
int saw_any_target = 0;
int is_first_dep = 0;
@ -67,7 +67,8 @@ static void parse_dep_file(void *map, size_t len)
if (is_target) {
/* The /next/ file is the first dependency */
is_first_dep = 1;
} else {
has_target = 1;
} else if (has_target) {
/* Save this token/filename */
memcpy(s, m, p-m);
s[p - m] = 0;