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scripts: kernel-doc: make it more compatible with Sphinx 3.x

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With Sphinx 3.x, the ".. c:type:" tag was changed to accept either:

	.. c:type:: typedef-like declaration
	.. c:type:: name

Using it for other types (including functions) don't work anymore.

So, there are newer tags for macro, enum, struct, union, and others,
which doesn't exist on older versions.

Add a check for the Sphinx version and change the produced tags
accordingly.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Mauro Carvalho Chehab 2020-09-24 15:30:37 +02:00
parent d38c8cfb05
commit efa44475b8
1 changed files with 65 additions and 6 deletions
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71
scripts/kernel-doc
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@ -271,6 +271,8 @@ if ($#ARGV == -1) {
}
my $kernelversion;
my $sphinx_major;
my $dohighlight = "";
my $verbose = 0;
@ -465,6 +467,43 @@ while ($ARGV[0] =~ m/^--?(.*)/) {
# continue execution near EOF;
# The C domain dialect changed on Sphinx 3. So, we need to check the
# version in order to produce the right tags.
sub findprog($)
{
foreach(split(/:/, $ENV{PATH})) {
return "$_/$_[0]" if(-x "$_/$_[0]");
}
}
sub get_sphinx_version()
{
my $ver;
my $major = 1;
my $cmd = "sphinx-build";
if (!findprog($cmd)) {
my $cmd = "sphinx-build3";
return $major if (!findprog($cmd));
}
open IN, "$cmd --version 2>&1 |";
while (<IN>) {
if (m/^\s*sphinx-build\s+([\d]+)\.([\d\.]+)(\+\/[\da-f]+)?$/) {
$major=$1;
last;
}
# Sphinx 1.2.x uses a different format
if (m/^\s*Sphinx.*\s+([\d]+)\.([\d\.]+)$/) {
$major=$1;
last;
}
}
close IN;
return $major;
}
# get kernel version from env
sub get_kernel_version() {
my $version = 'unknown kernel version';
@ -848,7 +887,11 @@ sub output_function_rst(%) {
my $start = "";
if ($args{'typedef'}) {
print ".. c:type:: ". $args{'function'} . "\n\n";
if ($sphinx_major < 3) {
print ".. c:type:: ". $args{'function'} . "\n\n";
} else {
print ".. c:function:: ". $args{'function'} . "\n\n";
}
print_lineno($declaration_start_line);
print " **Typedef**: ";
$lineprefix = "";
@ -938,9 +981,14 @@ sub output_enum_rst(%) {
my ($parameter);
my $oldprefix = $lineprefix;
my $count;
my $name = "enum " . $args{'enum'};
print "\n\n.. c:type:: " . $name . "\n\n";
if ($sphinx_major < 3) {
my $name = "enum " . $args{'enum'};
print "\n\n.. c:type:: " . $name . "\n\n";
} else {
my $name = $args{'enum'};
print "\n\n.. c:enum:: " . $name . "\n\n";
}
print_lineno($declaration_start_line);
$lineprefix = " ";
output_highlight_rst($args{'purpose'});
@ -966,8 +1014,13 @@ sub output_typedef_rst(%) {
my %args = %{$_[0]};
my ($parameter);
my $oldprefix = $lineprefix;
my $name = "typedef " . $args{'typedef'};
my $name;
if ($sphinx_major < 3) {
$name = "typedef " . $args{'typedef'};
} else {
$name = $args{'typedef'};
}
print "\n\n.. c:type:: " . $name . "\n\n";
print_lineno($declaration_start_line);
$lineprefix = " ";
@ -982,9 +1035,14 @@ sub output_struct_rst(%) {
my %args = %{$_[0]};
my ($parameter);
my $oldprefix = $lineprefix;
my $name = $args{'type'} . " " . $args{'struct'};
print "\n\n.. c:type:: " . $name . "\n\n";
if ($sphinx_major < 3) {
my $name = $args{'type'} . " " . $args{'struct'};
print "\n\n.. c:type:: " . $name . "\n\n";
} else {
my $name = $args{'struct'};
print "\n\n.. c:struct:: " . $name . "\n\n";
}
print_lineno($declaration_start_line);
$lineprefix = " ";
output_highlight_rst($args{'purpose'});
@ -2242,6 +2300,7 @@ sub process_file($) {
}
$sphinx_major = get_sphinx_version();
$kernelversion = get_kernel_version();
# generate a sequence of code that will splice in highlighting information