[Buildroot] [PATCH 1/1] libFTDI major version update 1. This version can coexists beside the 0.x version (libftdi.so, libftdi1.so).

[Thomas Petazzoni <thomas.petazzoni@free-electrons.com>]

Dear Daniel Sangue,

Thanks for getting back with a proper patch for libftdi1. Definitely
looking much better!

One first nit: the way your commit log is formatted. See
http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html.
Your commit log should look like:

"""
libftdi1: new package

This commit adds libftdi1 as a new package. This version should (and
can) co-exist besides the 0.x version already packaged as libftdi,
because they use different library names and a different API.

Signed-off-by: ...
"""

The most important thing is that the first line should be short, and be
an overall summary of what the patch is doing. Then one blank line, and
one or several paragraphs of additional details, then one blank line,
and the Signed-off-by line.

On Wed,  1 Oct 2014 16:18:21 +0200, Daniel Sangue wrote:
> diff --git a/package/libftdi1/Config.in b/package/libftdi1/Config.in
> new file mode 100644
> index 0000000..d896fc0
> --- /dev/null
> +++ b/package/libftdi1/Config.in
> @@ -0,0 +1,24 @@
> +config BR2_PACKAGE_LIBFTDI1
> +	bool "libftdi1"
> +	depends on BR2_TOOLCHAIN_HAS_THREADS # libusb
> +	select BR2_PACKAGE_LIBUSB
> +	select BR2_PACKAGE_LIBUSB_COMPAT
> +	select BR2_PACKAGE_LIBCONFUSE
> +	help
> +	  Userspace access to FTDI USB interface chips (version 1.x)
> +
> +	  http://www.intra2net.com/en/developer/libftdi/index.php
> +
> +if BR2_PACKAGE_LIBFTDI1
> +
> +config BR2_PACKAGE_LIBTFDI1_CPP
> +	depends on BR2_INSTALL_LIBSTDCPP
> +	bool "C++ bindings"
> +	help
> +	  C++ bindings for libftdi

According to your libftdi1.mk file comments, it looks like C++ support
can be autodetected. So maybe it's not really worth the effort having
an option for that: we could just enable C++ support when available,
and that's it.

> +
> +endif # BR2_PACKAGE_LIBFTDI1
> +
> +comment "libftdi1 needs a toolchain w/ threads"
> +	depends on !BR2_TOOLCHAIN_HAS_THREADS
> +
> diff --git a/package/libftdi1/libftdi1.mk b/package/libftdi1/libftdi1.mk
> new file mode 100644
> index 0000000..abe0dc7
> --- /dev/null
> +++ b/package/libftdi1/libftdi1.mk
> @@ -0,0 +1,22 @@
> +################################################################################
> +#
> +# libftdi1
> +#
> +################################################################################
> +
> +LIBFTDI1_VERSION = 1.1
> +LIBFTDI1_SOURCE = libftdi1-$(LIBFTDI1_VERSION).tar.bz2
> +LIBFTDI1_SITE = http://www.intra2net.com/en/developer/libftdi/download/

Please add LIBFTDI1_LICENSE and LIBFTDI1_LICENSE_FILES.

> +LIBFTDI1_INSTALL_STAGING = YES
> +LIBFDTI1_CONF_OPT = --without-examples
> +LIBFTDI1_DEPENDENCIES = libusb-compat libusb libconfuse
> +
> +# configure detect it automaticaly so we need to force it
> +ifeq ($(BR2_PACKAGE_LIBTFDI1_CPP),y)

If you remove the option for C++ support, you could use:

ifeq ($(BR2_INSTALL_LIBSTDCPP),y)

here. It will make sure C++ bindings are automatically built when the
toolchain has C++ support.

> +LIBFDTI_CONF_OPT += --enable-libftdipp
> +else
> +LIBFDTI_CONF_OPT += --disable-libftdipp
> +endif
> +
> +$(eval $(cmake-package))

Are you sure --{enable,disable}-libftdipp options are working for
CMake? It doesn't look like the usual way of passing CMake
configuration options, but maybe I'm missing something here.

Thanks,

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com