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Subject[PATCH 20/39] kbuild: allow docproc invocation from external
Date
From: Jiri Slaby <jirislaby@gmail.com>

- getcwd returns path without a slash at the end, add the slash
- add KBUILD_SRC env support, so that we can specify path for
kernel (to know where scripts/kernel-doc resides) and SRCTREE
(for searching files referenced in .tmpl) separately

[v2]
- use KBUILD_SRC instead of a newly introduced environment variable

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
---
scripts/basic/docproc.c | 13 +++++++++----
1 files changed, 9 insertions(+), 4 deletions(-)
diff --git a/scripts/basic/docproc.c b/scripts/basic/docproc.c
index 35bdc68..4c9523e 100644
--- a/scripts/basic/docproc.c
+++ b/scripts/basic/docproc.c
@@ -69,7 +69,7 @@ FILELINE * docsection;
#define NOFUNCTION "-nofunction"
#define NODOCSECTIONS "-no-doc-sections"

-char *srctree;
+static char *srctree, *kernsrctree;

void usage (void)
{
@@ -77,7 +77,8 @@ void usage (void)
fprintf(stderr, "Input is read from file.tmpl. Output is sent to stdout\n");
fprintf(stderr, "doc: frontend when generating kernel documentation\n");
fprintf(stderr, "depend: generate list of files referenced within file\n");
- fprintf(stderr, "Environment variable SRCTREE: absolute path to kernel source tree.\n");
+ fprintf(stderr, "Environment variable SRCTREE: absolute path to sources.\n");
+ fprintf(stderr, " KBUILD_SRC: absolute path to kernel source tree.\n");
}

/*
@@ -96,8 +97,8 @@ void exec_kernel_doc(char **svec)
exit(1);
case 0:
memset(real_filename, 0, sizeof(real_filename));
- strncat(real_filename, srctree, PATH_MAX);
- strncat(real_filename, KERNELDOCPATH KERNELDOC,
+ strncat(real_filename, kernsrctree, PATH_MAX);
+ strncat(real_filename, "/" KERNELDOCPATH KERNELDOC,
PATH_MAX - strlen(real_filename));
execvp(real_filename, svec);
fprintf(stderr, "exec ");
@@ -178,6 +179,7 @@ void find_export_symbols(char * filename)
char real_filename[PATH_MAX + 1];
memset(real_filename, 0, sizeof(real_filename));
strncat(real_filename, srctree, PATH_MAX);
+ strncat(real_filename, "/", PATH_MAX - strlen(real_filename));
strncat(real_filename, filename,
PATH_MAX - strlen(real_filename));
sym = add_new_file(filename);
@@ -382,6 +384,9 @@ int main(int argc, char *argv[])
srctree = getenv("SRCTREE");
if (!srctree)
srctree = getcwd(NULL, 0);
+ kernsrctree = getenv("KBUILD_SRC");
+ if (!kernsrctree)
+ kernsrctree = srctree;
if (argc != 3) {
usage();
exit(1);
--
1.6.3.rc3.40.g75b44


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