Re: [PATCH 1/1] cairo: add libpng to EXTRA_libcairo_la_DEPENDENCIES

[Saul Wold <sgw@linux.intel.com>]

On 03/13/2013 01:58 AM, Robert Yang wrote:
> There is a build error when I update the git repo and build again:
>
> x86_64-linux-libtool: link: cannot find the library `/path/to/sysroots/x86_64-linux/usr/lib/libpng15.la' or ...
>
> This because libpng was 1.5 before I update the git repo, and it
> is 1.6 now, libpng's include dir and lib dir are special, they are:
>
> /usr/include/libpngXX/png.h
> /usr/lib/libpngXX.la
>
> The XX is the version, e.g, libpng15.la, cairo doesn't handle this
> depends well, the configure finds that the lbpng is 1.6 after the
> update, but it doesn't rebuild libcairo.la since this depends isn't in
> the Makefile, it should have a file like cairo.def (cairo has this file,
> but it is only used for windows) to record this dependency.  Add
> libpng's includedir to EXTRA_libcairo_la_DEPENDENCIES as a quick fix.
>
I understand what you are trying to do here, but this is a point fix for 
a much bigger issue with the renaming of libpngXX, there are a number of 
other issues that will be uncovered and making this a hard code change 
here is not correct.

There are other .la that will contain pngXX and cause problems, this 
issue is also contained in SSTATE files, in the past we would do PR 
bumps to all the affected recipes that depended on PNG.

Sau!

> [YOCTO #4002]
>
> Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
> ---
>   meta/recipes-graphics/cairo/cairo_1.12.14.bb | 13 +++++++++++++
>   1 file changed, 13 insertions(+)
>
> diff --git a/meta/recipes-graphics/cairo/cairo_1.12.14.bb b/meta/recipes-graphics/cairo/cairo_1.12.14.bb
> index 16f9d7b..857cfa6 100644
> --- a/meta/recipes-graphics/cairo/cairo_1.12.14.bb
> +++ b/meta/recipes-graphics/cairo/cairo_1.12.14.bb
> @@ -38,6 +38,19 @@ FILES_cairo-gobject = "${libdir}/libcairo-gobject.so.*"
>   FILES_cairo-script-interpreter = "${libdir}/libcairo-script-interpreter.so.*"
>   FILES_cairo-perf-utils = "${bindir}/cairo-trace ${libdir}/cairo/libcairo-trace.so.*"
>
> +do_compile() {
> +	# The libpng's include is special, it is usually
> +	# usr/include/libpngXX, the XX is the version number, add it to
> +	# libcairo.la's dependencies so that libcairo.la can be rebuilt
> +	# when libpng upgrades.
> +	if [ "${PN}" = "cairo-native" ]; then
> +		libpng_DEPS="`pkg-config libpng --variable=includedir`"
> +	else
> +		libpng_DEPS="${STAGING_DIR_HOST}`pkg-config libpng --variable=includedir`"
> +	fi
> +	oe_runmake EXTRA_libcairo_la_DEPENDENCIES="$libpng_DEPS"
> +}
> +
>   do_install_append () {
>   	rm -rf ${D}${bindir}/cairo-sphinx
>   	rm -rf ${D}${libdir}/cairo/cairo-fdr*
>