Re: [PATCH] Avoid installing pylibfdt when dependencies are missing

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On Fri, Jan 05, 2018 at 11:54:12AM -0700, Simon Glass wrote:
> At present we have a build check that python-dev and swig are available.
> If they are not, we print a message and skip building pylibfdt.
> 
> However this check is not currently present with 'make install'. The
> install is attempted, and fails. See crbug.com/789189
> 
> Split the check out into a separate script and use it twice, once for the
> build and once for the install. This corrects the error.
> 
> Reported-by: Mike Frysinger <vapier@xxxxxxxxxxxx>
> Signed-off-by: Simon Glass <sjg@xxxxxxxxxxxx>

Applied, thanks.

> ---
> 
>  Makefile | 24 ++++++++++++++++--------
>  1 file changed, 16 insertions(+), 8 deletions(-)
> 
> diff --git a/Makefile b/Makefile
> index 9ba8121..fffb80e 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -126,19 +126,23 @@ SCRIPTS = dtdiff
>  
>  all: $(BIN) libfdt
>  
> -# We need both Python and swig to build pylibfdt.
> -.PHONY: maybe_pylibfdt
> -maybe_pylibfdt: FORCE
> +# We need both Python and swig to build/install pylibfdt.
> +# This builds the given make ${target} if those deps are found.
> +check_python_deps = \
>  	if $(PKG_CONFIG) --cflags python2 >/dev/null 2>&1; then \
>  		if which swig >/dev/null 2>&1; then \
>  			can_build=yes; \
>  		fi; \
>  	fi; \
> -	if [ "$$can_build" = "yes" ]; then \
> -		$(MAKE) pylibfdt; \
> +	if [ "$${can_build}" = "yes" ]; then \
> +		$(MAKE) $${target}; \
>  	else \
> -		echo "## Skipping pylibfdt (install python dev and swig to build)"; \
> -	fi
> +		echo "\#\# Skipping pylibfdt (install python dev and swig to build)"; \
> +	fi ;
> +
> +.PHONY: maybe_pylibfdt
> +maybe_pylibfdt: FORCE
> +	target=pylibfdt; $(check_python_deps)
>  
>  ifeq ($(NO_PYTHON),)
>  all: maybe_pylibfdt
> @@ -208,8 +212,12 @@ install-includes:
>  
>  install: install-bin install-lib install-includes
>  
> +.PHONY: maybe_install_pylibfdt
> +maybe_install_pylibfdt: FORCE
> +	target=install_pylibfdt; $(check_python_deps)
> +
>  ifeq ($(NO_PYTHON),)
> -install: install_pylibfdt
> +install: maybe_install_pylibfdt
>  endif
>  
>  $(VERSION_FILE): Makefile FORCE

-- 
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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