Re: [PATCH v3 1/4] pylibfdt: allow build out of tree

[David Gibson <david-xT8FGy+AXnRB3Ne2BGzF6laj5H9X9Tb+@public.gmane.org>]

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On Tue, Sep 15, 2020 at 11:27:02PM +0400, marcandre.lureau-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org wrote:
> From: Marc-André Lureau <marcandre.lureau-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
> 
> With meson, we have to support out-of-tree build. Fix path lookup.
> 
> Signed-off-by: Marc-André Lureau <marcandre.lureau-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
> ---
>  pylibfdt/Makefile.pylibfdt |  2 +-
>  pylibfdt/setup.py          | 25 +++++++++++++++++--------
>  2 files changed, 18 insertions(+), 9 deletions(-)
> 
> diff --git a/pylibfdt/Makefile.pylibfdt b/pylibfdt/Makefile.pylibfdt
> index 6866a0b..32ae1c5 100644
> --- a/pylibfdt/Makefile.pylibfdt
> +++ b/pylibfdt/Makefile.pylibfdt
> @@ -10,7 +10,7 @@ PYLIBFDT_CLEANDIRS_L = build __pycache__
>  PYLIBFDT_CLEANDIRS = $(PYLIBFDT_CLEANDIRS_L:%=$(PYLIBFDT_dir)/%)
>  
>  SETUP = $(PYLIBFDT_dir)/setup.py
> -SETUPFLAGS =
> +SETUPFLAGS = --top-builddir .
>  
>  ifndef V
>  SETUPFLAGS += --quiet
> diff --git a/pylibfdt/setup.py b/pylibfdt/setup.py
> index 53f2bef..f8ec924 100755
> --- a/pylibfdt/setup.py
> +++ b/pylibfdt/setup.py
> @@ -19,23 +19,31 @@ import sys
>  VERSION_PATTERN = '^#define DTC_VERSION "DTC ([^"]*)"$'
>  
>  
> +def get_top_builddir():
> +    assert '--top-builddir' in sys.argv

I see you've added the option to the Makefile, but if this were
invoked manually, I'm not sure that you want to just die if the
--top-builddir option isn't included.

Even if you do, I think you want a more meaningful error than an
assertion failure.

> +    index = sys.argv.index('--top-builddir')
> +    sys.argv.pop(index)
> +    return sys.argv.pop(index)
> +
> +
> +srcdir = os.path.dirname(os.path.abspath(sys.argv[0]))
> +top_builddir = get_top_builddir()
> +
> +
>  def get_version():
> -    version_file = "../version_gen.h"
> +    version_file = os.path.join(top_builddir, 'version_gen.h')
>      f = open(version_file, 'rt')
>      m = re.match(VERSION_PATTERN, f.readline())
>      return m.group(1)
>  
>  
> -setupdir = os.path.dirname(os.path.abspath(sys.argv[0]))
> -os.chdir(setupdir)
> -
>  libfdt_module = Extension(
>      '_libfdt',
> -    sources=['libfdt.i'],
> -    include_dirs=['../libfdt'],
> +    sources=[os.path.join(srcdir, 'libfdt.i')],
> +    include_dirs=[os.path.join(srcdir, '../libfdt')],
>      libraries=['fdt'],
> -    library_dirs=['../libfdt'],
> -    swig_opts=['-I../libfdt'],
> +    library_dirs=[os.path.join(top_builddir, 'libfdt')],
> +    swig_opts=['-I' + os.path.join(srcdir, '../libfdt')],
>  )
>  
>  setup(
> @@ -44,5 +52,6 @@ setup(
>      author='Simon Glass <sjg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>',
>      description='Python binding for libfdt',
>      ext_modules=[libfdt_module],
> +    package_dir={'': srcdir},
>      py_modules=['libfdt'],
>  )

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson

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