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| author | Masahiro Yamada <masahiroy@kernel.org> | 2022-12-29 10:15:00 +0100 |
|---|---|---|
| committer | Masahiro Yamada <masahiroy@kernel.org> | 2023-01-22 15:43:33 +0100 |
| commit | 92215e7a801da7b89037a185c98f5ebb86a415b9 (patch) | |
| tree | 3c1547bd8226598cc84cbeaa351f84d86ef6badf /scripts/basic | |
| parent | kbuild: make W=1 warn files that are tracked but ignored by git (diff) | |
| download | linux-92215e7a801da7b89037a185c98f5ebb86a415b9.tar.xz linux-92215e7a801da7b89037a185c98f5ebb86a415b9.zip | |
kbuild: rename cmd_$@ to savedcmd_$@ in *.cmd files
The cmd-check macro compares $(cmd_$@) and $(cmd_$1), but a pitfall is
that you cannot use cmd_<target> as the variable name for the command.
For example, the following code will not work in the top Makefile
or ./Kbuild.
quiet_cmd_foo = GEN $@
cmd_foo = touch $@
targets += foo
foo: FORCE
$(call if_changed,foo)
In this case, both $@ and $1 are expanded to 'foo', so $(cmd_check)
is always empty.
We do not need to use the same prefix for cmd_$@ and cmd_$1.
Rename the former to savedcmd_$@.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
Diffstat (limited to 'scripts/basic')
| -rw-r--r-- | scripts/basic/fixdep.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/scripts/basic/fixdep.c b/scripts/basic/fixdep.c index f932aeaba71a..37782a632494 100644 --- a/scripts/basic/fixdep.c +++ b/scripts/basic/fixdep.c @@ -70,7 +70,7 @@ * * It first generates a line * - * cmd_<target> = <cmdline> + * savedcmd_<target> = <cmdline> * * and then basically copies the .<target>.d file to stdout, in the * process filtering out the dependency on autoconf.h and adding @@ -343,7 +343,7 @@ int main(int argc, char *argv[]) target = argv[2]; cmdline = argv[3]; - printf("cmd_%s := %s\n\n", target, cmdline); + printf("savedcmd_%s := %s\n\n", target, cmdline); buf = read_file(depfile); parse_dep_file(buf, target); |