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authorYann E. MORIN <yann.morin.1998@anciens.enib.fr>2011-02-24 19:36:42 +0100
committerMichal Marek <mmarek@suse.cz>2011-04-15 15:12:48 +0200
commitf094f8a1b2737a4f3ca46742ff9aaf460d39285e (patch)
tree91f1b35efd025cc0a31f78230c8f81ab5a21c78f /scripts/kconfig/zconf.l
parent466de9183570fe9fd21ef167951488fc9d513fcb (diff)
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kconfig: allow multiple inclusion of the same file
Allow 'source'ing the same file from multiple places (eg. from different files, and/or under different conditions). To avoid circular inclusion, scan the source-ancestry of the current file, and abort if already sourced in this branch. Regenerate the pre-parsed lex.zconf.c_shipped file. Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> Signed-off-by: Michal Marek <mmarek@suse.cz>
Diffstat (limited to 'scripts/kconfig/zconf.l')
-rw-r--r--scripts/kconfig/zconf.l29
1 files changed, 19 insertions, 10 deletions
diff --git a/scripts/kconfig/zconf.l b/scripts/kconfig/zconf.l
index 3dbaec1..f23e3af 100644
--- a/scripts/kconfig/zconf.l
+++ b/scripts/kconfig/zconf.l
@@ -299,6 +299,7 @@ void zconf_initscan(const char *name)
void zconf_nextfile(const char *name)
{
+ struct file *iter;
struct file *file = file_lookup(name);
struct buffer *buf = malloc(sizeof(*buf));
memset(buf, 0, sizeof(*buf));
@@ -314,16 +315,24 @@ void zconf_nextfile(const char *name)
buf->parent = current_buf;
current_buf = buf;
- if (file->flags & FILE_BUSY) {
- printf("%s:%d: do not source '%s' from itself\n",
- zconf_curname(), zconf_lineno(), name);
- exit(1);
- }
- if (file->flags & FILE_SCANNED) {
- printf("%s:%d: file '%s' is already sourced from '%s'\n",
- zconf_curname(), zconf_lineno(), name,
- file->parent->name);
- exit(1);
+ for (iter = current_file->parent; iter; iter = iter->parent ) {
+ if (!strcmp(current_file->name,iter->name) ) {
+ printf("%s:%d: recursive inclusion detected. "
+ "Inclusion path:\n current file : '%s'\n",
+ zconf_curname(), zconf_lineno(),
+ zconf_curname());
+ iter = current_file->parent;
+ while (iter && \
+ strcmp(iter->name,current_file->name)) {
+ printf(" included from: '%s:%d'\n",
+ iter->name, iter->lineno-1);
+ iter = iter->parent;
+ }
+ if (iter)
+ printf(" included from: '%s:%d'\n",
+ iter->name, iter->lineno+1);
+ exit(1);
+ }
}
file->flags |= FILE_BUSY;
file->lineno = 1;