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| author | Kees Cook <keescook@chromium.org> | 2019-09-24 16:29:58 -0700 |
|---|---|---|
| committer | Jonathan Corbet <corbet@lwn.net> | 2019-10-01 06:24:27 -0600 |
| commit | 29efbb24d992564db4bbb808597719934ed9ac9f (patch) | |
| tree | f0e5cea4c2345d762d7da07c105e57f192fd4639 /Documentation/Makefile | |
| parent | 54ecb8f7028c5eb3d740bb82b0f1d90f2df63c5c (diff) | |
| download | lwn-29efbb24d992564db4bbb808597719934ed9ac9f.tar.gz lwn-29efbb24d992564db4bbb808597719934ed9ac9f.zip | |
docs: Use make invocation's -j argument for parallelism
While sphinx 1.7 and later supports "-jauto" for parallelism, this
effectively ignores the "-j" flag used in the "make" invocation, which
may cause confusion for build systems. Instead, extract the available
parallelism from "make"'s job server (since it is not exposed in any
special variables) and use that for the "sphinx-build" run. Now things
work correctly for builds where -j is specified at the top-level:
make -j16 htmldocs
If -j is not specified, continue to fallback to "-jauto" if available.
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to 'Documentation/Makefile')
| -rw-r--r-- | Documentation/Makefile | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/Documentation/Makefile b/Documentation/Makefile index e145e4db508b..c6e564656a5b 100644 --- a/Documentation/Makefile +++ b/Documentation/Makefile @@ -33,7 +33,7 @@ ifeq ($(HAVE_SPHINX),0) else # HAVE_SPHINX -export SPHINXOPTS = $(shell perl -e 'open IN,"sphinx-build --version 2>&1 |"; while (<IN>) { if (m/([\d\.]+)/) { print "-jauto" if ($$1 >= "1.7") } ;} close IN') +export SPHINX_PARALLEL = $(shell perl -e 'open IN,"sphinx-build --version 2>&1 |"; while (<IN>) { if (m/([\d\.]+)/) { print "auto" if ($$1 >= "1.7") } ;} close IN') # User-friendly check for pdflatex and latexmk HAVE_PDFLATEX := $(shell if which $(PDFLATEX) >/dev/null 2>&1; then echo 1; else echo 0; fi) @@ -68,6 +68,7 @@ quiet_cmd_sphinx = SPHINX $@ --> file://$(abspath $(BUILDDIR)/$3/$4) PYTHONDONTWRITEBYTECODE=1 \ BUILDDIR=$(abspath $(BUILDDIR)) SPHINX_CONF=$(abspath $(srctree)/$(src)/$5/$(SPHINX_CONF)) \ $(SPHINXBUILD) \ + -j $(shell python $(srctree)/scripts/jobserver-count $(SPHINX_PARALLEL)) \ -b $2 \ -c $(abspath $(srctree)/$(src)) \ -d $(abspath $(BUILDDIR)/.doctrees/$3) \ |