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| author | Michal Marek <mmarek@suse.cz> | 2011-03-11 22:34:47 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-13 15:59:58 -0700 |
| commit | 7840fea200cd1ad93ed19853a83752a21f691326 (patch) | |
| tree | e13f604355993207d34cc5abe335ec944ff871d7 /scripts | |
| parent | e8444a3e3b56b268c6ca31a2f77040fd944834fb (diff) | |
| download | kernel-common-7840fea200cd1ad93ed19853a83752a21f691326.tar.gz kernel-common-7840fea200cd1ad93ed19853a83752a21f691326.tar.bz2 kernel-common-7840fea200cd1ad93ed19853a83752a21f691326.zip | |
kbuild: Fix computing srcversion for modules
Recent change to fixdep:
commit b7bd182176960fdd139486cadb9962b39f8a2b50
Author: Michal Marek <mmarek@suse.cz>
Date: Thu Feb 17 15:13:54 2011 +0100
fixdep: Do not record dependency on the source file itself
changed the format of the *.cmd files without realizing that it is also
used by modpost. Put the path to the source file to the file back, in a
special variable, so that modpost sees all source files when calculating
srcversion for modules.
Reported-and-tested-by: Henrik Rydberg <rydberg@euromail.se>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'scripts')
| -rw-r--r-- | scripts/basic/fixdep.c | 19 | ||||
| -rw-r--r-- | scripts/mod/sumversion.c | 19 |
2 files changed, 30 insertions, 8 deletions
diff --git a/scripts/basic/fixdep.c b/scripts/basic/fixdep.c index 6c94c6ce2925..291228e25984 100644 --- a/scripts/basic/fixdep.c +++ b/scripts/basic/fixdep.c @@ -309,6 +309,11 @@ static void do_config_file(const char *filename) close(fd); } +/* + * Important: The below generated source_foo.o and deps_foo.o variable + * assignments are parsed not only by make, but also by the rather simple + * parser in scripts/mod/sumversion.c. + */ static void parse_dep_file(void *map, size_t len) { char *m = map; @@ -323,7 +328,6 @@ static void parse_dep_file(void *map, size_t len) exit(1); } memcpy(s, m, p-m); s[p-m] = 0; - printf("deps_%s := \\\n", target); m = p+1; clear_config(); @@ -343,12 +347,15 @@ static void parse_dep_file(void *map, size_t len) strrcmp(s, "arch/um/include/uml-config.h") && strrcmp(s, ".ver")) { /* - * 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. + * Do not list the source file as dependency, so that + * kbuild is not confused if a .c file is rewritten + * into .S or vice versa. Storing it in source_* is + * needed for modpost to compute srcversions. */ - if (!first) + if (first) { + printf("source_%s := %s\n\n", target, s); + printf("deps_%s := \\\n", target); + } else printf(" %s \\\n", s); do_config_file(s); } diff --git a/scripts/mod/sumversion.c b/scripts/mod/sumversion.c index ecf9c7dc1825..9dfcd6d988da 100644 --- a/scripts/mod/sumversion.c +++ b/scripts/mod/sumversion.c @@ -300,8 +300,8 @@ static int is_static_library(const char *objfile) return 0; } -/* We have dir/file.o. Open dir/.file.o.cmd, look for deps_ line to - * figure out source file. */ +/* We have dir/file.o. Open dir/.file.o.cmd, look for source_ and deps_ line + * to figure out source files. */ static int parse_source_files(const char *objfile, struct md4_ctx *md) { char *cmd, *file, *line, *dir; @@ -340,6 +340,21 @@ static int parse_source_files(const char *objfile, struct md4_ctx *md) */ while ((line = get_next_line(&pos, file, flen)) != NULL) { char* p = line; + + if (strncmp(line, "source_", sizeof("source_")-1) == 0) { + p = strrchr(line, ' '); + if (!p) { + warn("malformed line: %s\n", line); + goto out_file; + } + p++; + if (!parse_file(p, md)) { + warn("could not open %s: %s\n", + p, strerror(errno)); + goto out_file; + } + continue; + } if (strncmp(line, "deps_", sizeof("deps_")-1) == 0) { check_files = 1; continue; |