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toolchain-wrapper: support change of BR2_CCACHE

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By moving the ccache call to the toolchain wrapper, the following
scenario no longer works:

make foo-dirclean all BR2_CCACHE=

That's a sometimes useful call to check if some failure is perhaps
caused by ccache.

We can enable this scenario again by exporting BR_NO_CCACHE when
BR2_CCACHE is not set, and by handling this in the toolchain wrapper.

Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Tested-by: Romain Naour <romain.naour@openwide.fr>
Reviewed-by: Romain Naour <romain.naour@openwide.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Arnout Vandecappelle 2015-10-04 13:28:56 +01:00 committed by Peter Korsgaard
parent 2b356105f0
commit 792f1278e3
2 changed files with 13 additions and 4 deletions
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2
Makefile
View File

@ -375,6 +375,8 @@ BR_CACHE_DIR = $(call qstrip,$(BR2_CCACHE_DIR))
export BR_CACHE_DIR
HOSTCC := $(CCACHE) $(HOSTCC)
HOSTCXX := $(CCACHE) $(HOSTCXX)
else
export BR_NO_CCACHE
endif
# Scripts in support/ or post-build scripts may need to reference

15
toolchain/toolchain-wrapper.c
View File

@ -98,7 +98,7 @@ static void check_unsafe_path(const char *path, int paranoid)
int main(int argc, char **argv)
{
char **args, **cur;
char **args, **cur, **exec_args;
char *relbasedir, *absbasedir;
char *progpath = argv[0];
char *basename;
@ -247,6 +247,13 @@ int main(int argc, char **argv)
/* finish with NULL termination */
*cur = NULL;
exec_args = args;
#ifdef BR_CCACHE
if (getenv("BR_NO_CCACHE"))
/* Skip the ccache call */
exec_args++;
#endif
/* Debug the wrapper to see actual arguments passed to
* the compiler:
* unset, empty, or 0: do not trace
@ -257,14 +264,14 @@ int main(int argc, char **argv)
debug = atoi(env_debug);
if (debug > 0) {
fprintf(stderr, "Toolchain wrapper executing:");
for (i = 0; args[i]; i++)
for (i = 0; exec_args[i]; i++)
fprintf(stderr, "%s'%s'",
(debug == 2) ? "\n " : " ", args[i]);
(debug == 2) ? "\n " : " ", exec_args[i]);
fprintf(stderr, "\n");
}
}
if (execv(args[0], args))
if (execv(exec_args[0], exec_args))
perror(path);
free(args);