[Buildroot] [PATCH 1/1] package/pistache: new package

[Thomas Ruschival <thomas@ruschival.de>]

Hi Yann, dear list,
thanks for the effort of the extensive review and sorry for not having read 
about 'make check-package'.
I agree with your suggestions and will look into the build errors on other 
platforms.

On 4/26/20 7:41 PM Yann E. MORIN wrote:
> Thomas, All,
> 
> Thanks for your patch. Please see my review below...
> 
> On 2020-04-26 15:58 +0200, Thomas Ruschival spake thusly:
> > Add a new package for pistache https://pistache.io/
> > Pistache is a C++ REST client/server library.
> 
> Note: all you wrote in your cover letter should have been in the commit
> log.
> 
> > Signed-off-by: Thomas Ruschival <thomas@ruschival.de>
> > ---
> > 
> >  package/Config.in              |  1 +
> >  package/pistache/Config.in     | 22 ++++++++++++++++++++++
> >  package/pistache/pistache.hash |  5 +++++
> >  package/pistache/pistache.mk   | 23 +++++++++++++++++++++++
> >  4 files changed, 51 insertions(+)
> >  create mode 100644 package/pistache/Config.in
> >  create mode 100644 package/pistache/pistache.hash
> >  create mode 100644 package/pistache/pistache.mk
> > 
> > diff --git a/package/Config.in b/package/Config.in
> > index 6c55c5bc42..631aec69a1 100644
> > --- a/package/Config.in
> > +++ b/package/Config.in
> > @@ -1753,6 +1753,7 @@ menu "Networking"
> > 
> >  	source "package/ortp/Config.in"
> >  	source "package/paho-mqtt-c/Config.in"
> >  	source "package/paho-mqtt-cpp/Config.in"
> > 
> > +	source "package/pistache/Config.in"
> > 
> >  	source "package/qdecoder/Config.in"
> >  	source "package/qpid-proton/Config.in"
> >  	source "package/rabbitmq-c/Config.in"
> > 
> > diff --git a/package/pistache/Config.in b/package/pistache/Config.in
> > new file mode 100644
> > index 0000000000..5b81c9c1b7
> > --- /dev/null
> > +++ b/package/pistache/Config.in
> > @@ -0,0 +1,22 @@
> > +config BR2_PACKAGE_PISTACHE
> > +	bool "pistache"
> > +	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 # C++14
> > +	depends on BR2_USE_WCHAR
> > +	depends on BR2_TOOLCHAIN_HAS_THREADS
> 
> Since it is C++, it also needs:
> 
>     depends on BR2_INSTALL_LIBSTDCPP
Right.
> > +	help
> > +	  Pistache is a C++ REST framework written by Mathieu Stefani
> > +	  at Datacratic. It is written in pure C++14 with no external
> > +	  dependency and provides a low-level HTTP abstraction. It
> > +	  provides both an HTTP client and server that can be used
> > +	  to create and query complex web and REST APIs.
> > +
> > +	  https://pistache.io/
> 
> https://pistache.io/ uses an invalid certificate, while http://pistache.io/
> works. However, I'd prefer we directly point to the github repository,
> since this seems to be kept more up-to-date than the website (as you
> noticed, at least about C++11 vs C++14).
> 
> Also, the description, although the one from the webasite, is a bit too
> verbose, especially since Datacratic (http://datacratic.com/) does not
> exist anymore it seems.
> 
> I'd rather we just use the shorter description from the github repo:
> 
>     Pistache is a modern and elegant HTTP and REST framework for C++. It
>     is entirely written in pure-C++14 and provides a clear and pleasant
>     API.
> 
>     https://github.com/oktal/pistache
> 
Agreed, will fix that.
> 
> Single empty line, as noticed by 'make check-package'.
Sorry for that, should have read all docs.  Especially since there are tools 
to lint patches.

> > +config BR2_PACKAGE_PISTACHE_ENABLE_SSL
> > +	bool "pistache SSL support"
> > +	depends on BR2_PACKAGE_PISTACHE
> > +	depends on BR2_PACKAGE_OPENSSL
> > +	help
> > +	  Configure pistache with -DPISTACHE_USE_SSL=On to support HTTPS
> 
> I don't think an option is needed. Usually, such optional dependencies
> are treated directly in the .mk, see below...
> 
> > +
> > diff --git a/package/pistache/pistache.hash
> > b/package/pistache/pistache.hash new file mode 100644
> > index 0000000000..fb4ada8b24
> > --- /dev/null
> > +++ b/package/pistache/pistache.hash
> > @@ -0,0 +1,5 @@
> > +# Nov 22
> > +sha256 6b02ee423047992c5298d9c81a81231f71d62a549242a63913a050836b863e64 
> > pistache-394b17c01f928bb.tar.gz +
> > +# Apr 13
> > +sha256 bcc7640eb4ae4b178e504f18ebf29dd0a6f8189710cdc0fa4703fa27728145e4 
> > 73f248acd6db4c53.tar.gz
> Please only provide just the one hash that is needed. The dates are
> meaningless, too. Instead, comment the hash with 'locally computed'
> (as it comes from a github -generated tarball).
> 
> > diff --git a/package/pistache/pistache.mk b/package/pistache/pistache.mk
> > new file mode 100644
> > index 0000000000..da9e61b10e
> > --- /dev/null
> > +++ b/package/pistache/pistache.mk
> > @@ -0,0 +1,23 @@
> > +#########################################################################
> > ####### +#
> > +# Pistache
> > +#
> > +#########################################################################
> > ####### +
> > +PISTACHE_VERSION = 73f248acd6db4c53
> > +PISTACHE_SOURCE = $(PISTACHE_VERSION).tar.gz
> > +PISTACHE_SITE = https://github.com/oktal/pistache/archive
> > +PISTACHE_SITE_METHOD = wget
> 
> Use the full-length hash, ie. 73f248acd6db4c53e6604577b7e13fd5e756f96f
> Don't override the _SOURCE, use the github helper for _SITE, and don't
> force the _SITE_METHOD:
> 
>     PISTACHE_VERSION = 73f248acd6db4c53
>     PISTACHE_SITE = $(call github,oktal,pistache,$(PISTACHE_VERSION))
> 
> > +
> > +PISTACHE_INSTALL_STAGING = YES
> > +PISTACHE_INSTALL_TARGET = YES
> 
> _INSTALL_TARGET is the default, no need to specify it.
> 
> > +PISTACHE_LICENSE = Apache-2.0
> > +PISTACHE_LICENSE_FILE = LICENSE
> 
> Put the licensing info before INSTALL_STAGING, but after the download
> info.
> 
> > +PISTACHE_CONF_OPTS += -DCMAKE_BUILD_TYPE=Release
> 
> Not needed, this is set by the cmake-package infra.
True, bad habit. Will remove.

> Also, you should probably set additionaly options:
> 
>     PISTACHE_CONF_OPTS = \
>        -DPISTACHE_BUILD_EXAMPLES=OFF \
>        -DPISTACHE_BUILD_TESTS=OFF \
>        -DPISTACHE_BUILD_DOCS=OFF
> 
> > +ifeq (y, $(BR2_PACKAGE_PISTACHE_ENABLE_SSL))
> > +	PISTACHE_CONF_OPTS += -DPISTACHE_USE_SSL=On
> > +endif
> 
> That's were we would handle the optional dependency to openssl:
> 
>     ifeq ($(BR2_PACKAGE_OPENSSL),y)
>     PISTACHE_DEPENDENCIES += openssl
>     PISTACHE_CONF_OPTS += -DPISTACHE_USE_SSL=ON
>     else
>     PISTACHE_CONF_OPTS += -DPISTACHE_USE_SSL=OFF
>     endif
Makes sense, I fully agree.

> I was about to do all those changes locally, but there are too many
> build failures anyway:
> 
>     $ echo 'BR2_PACKAGE_PISTACHE=y' >pistache.cfg
>     $ ./utils/test-pkg -d $(pwd)/br-test -c pistache.cfg
>                              br-arm-full [1/6]: FAILED
>                   br-arm-cortex-a9-glibc [2/6]: OK
>                    br-arm-cortex-m4-full [3/6]: FAILED
>                           br-x86-64-musl [4/6]: OK
>                       br-arm-full-static [5/6]: FAILED
>                             sourcery-arm [6/6]: SKIPPED
>     6 builds, 1 skipped, 3 build failed, 0 legal-info failed
> 
> The build logs will be located in br-test/*/logfile
> 
> Care to address these issues, and look into the build failures?

Sure, I will look into the build errors and provide an updated patch later 
this week.

> Regards,
> Yann E. MORIN.

Best regards,
Thomas

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