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docs: Kbuild/Makefile: allow check for missing docs at build time

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While this doesn't make sense for production Kernels, in order to
avoid regressions when documents are touched, let's add a
check target at the make file.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Mauro Carvalho Chehab 2019-06-04 09:26:27 -03:00 committed by Jonathan Corbet
parent 3f9564e680
commit b1663d7e3a
4 changed files with 29 additions and 0 deletions
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13
Documentation/Kconfig Normal file
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@ -0,0 +1,13 @@
config WARN_MISSING_DOCUMENTS
bool "Warn if there's a missing documentation file"
depends on COMPILE_TEST
help
It is not uncommon that a document gets renamed.
This option makes the Kernel to check for missing dependencies,
warning when something is missing. Works only if the Kernel
is built from a git tree.
If unsure, select 'N'.

5
Documentation/Makefile
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@ -4,6 +4,11 @@
subdir-y := devicetree/bindings/
# Check for broken documentation file references
ifeq ($(CONFIG_WARN_MISSING_DOCUMENTS),y)
$(shell $(srctree)/scripts/documentation-file-ref-check --warn)
endif
# You can set these variables from the command line.
SPHINXBUILD = sphinx-build
SPHINXOPTS =

2
Kconfig
View File

@ -30,3 +30,5 @@ source "crypto/Kconfig"
source "lib/Kconfig"
source "lib/Kconfig.debug"
source "Documentation/Kconfig"

9
scripts/documentation-file-ref-check
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@ -22,9 +22,16 @@ $scriptname =~ s,.*/([^/]+/),$1,;
# Parse arguments
my $help = 0;
my $fix = 0;
my $warn = 0;
if (! -d ".git") {
printf "Warning: can't check if file exists, as this is not a git tree";
exit 0;
}
GetOptions(
'fix' => \$fix,
'warn' => \$warn,
'h|help|usage' => \$help,
);
@ -139,6 +146,8 @@ while (<IN>) {
if (!($ref =~ m/(scripts|Kconfig|Kbuild)/)) {
$broken_ref{$ref}++;
}
} elsif ($warn) {
print STDERR "Warning: $f references a file that doesn't exist: $fulref\n";
} else {
print STDERR "$f: $fulref\n";
}