app-crypt/gpgme: add python bindings

2 files changed, 170 insertions, 3 deletions

diff --git a/app-crypt/gpgme/files/gpgme-1.7.0-build-python.patch b/app-crypt/gpgme/files/gpgme-1.7.0-build-python.patch
new file mode 100644
index 000000000000..950813fe2320
--- /dev/null
+++ b/app-crypt/gpgme/files/gpgme-1.7.0-build-python.patch
@@ -0,0 +1,136 @@
+From a46cd3926d629da23b365b70b7bf24201c25d430 Mon Sep 17 00:00:00 2001
+From: Alon Bar-Lev <alon.barlev@gmail.com>
+Date: Sat, 24 Sep 2016 01:26:19 +0300
+Subject: [PATCH] build: lang: python: cleanups
+
+1. Make setup.py executable when generated.
+
+2. Add prepare target to enable prepare the source tree without building
+   anything. This is handy to enable standard distutils build outside of
+   gpgme build system.
+
+3. Treat data.h in similar manner as other VPATH issues, just copy it to
+   the srcdir to simplify build, remove the CFLAGS requirement of
+   distutils.
+
+4. Add environment variable (binary_builddir) for setup to use alternate
+   build directory so that for multiple targets same binaries may be
+   used without rebuilding the C part.
+
+The above does not alter the behavior of current build but supports the
+following sequence:
+
+$ mkdir common
+$ cd common
+$ ../configure --enable-languages=
+$ make
+$ cd ..
+$ mkdir python
+$ cd python
+$ ../configure --enable-languages=
+$ cd lang/python
+$ make prepare
+$ binary_builddir="../../../common" ./setup.py build
+$ binary_builddir="../../../common" ./setup.py install
+
+Notice the standard use of distutils which is required for package
+manager to control the python selection and build process.
+
+Signed-off-by: Alon Bar-Lev <alon.barlev@gmail.com>
+---
+ configure.ac            |  2 +-
+ lang/python/Makefile.am | 11 ++++++-----
+ lang/python/gpgme.i     |  2 +-
+ lang/python/setup.py.in |  9 +++++----
+ 4 files changed, 13 insertions(+), 11 deletions(-)
+
+diff --git a/configure.ac b/configure.ac
+index 4a29f2f..efa1f19 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -886,9 +886,9 @@ AC_CONFIG_FILES([lang/Makefile lang/cl/Makefile lang/cl/gpgme.asd])
+ AM_COND_IF([HAVE_DOXYGEN], [AC_CONFIG_FILES([lang/qt/doc/Doxyfile])])
+ AC_CONFIG_FILES(lang/qt/doc/Makefile)
+ AC_CONFIG_FILES([lang/python/Makefile
+-		 lang/python/setup.py
+ 		 lang/python/pyme/version.py
+ 		 lang/python/tests/Makefile])
++AC_CONFIG_FILES([lang/python/setup.py], [chmod a+x lang/python/setup.py])
+ AC_OUTPUT
+ 
+ echo "
+diff --git a/lang/python/Makefile.am b/lang/python/Makefile.am
+index 2271ce0..fb1eebf 100644
+--- a/lang/python/Makefile.am
++++ b/lang/python/Makefile.am
+@@ -51,17 +51,18 @@ copystamp: $(COPY_FILES) $(COPY_FILES_PYME)
+ 	  cp -R $(COPY_FILES) . ; \
+ 	  cp -R $(COPY_FILES_PYME) pyme ; \
+ 	fi
++	cp "$(top_srcdir)/src/data.h" .
+ 	touch $@
+ 
++prepare: copystamp
++
+ all-local: copystamp
+ 	for PYTHON in $(PYTHONS); do \
+-	  CFLAGS="$(CFLAGS) -I$(top_srcdir)" \
+-	    $$PYTHON setup.py build --verbose ; \
++	  $$PYTHON setup.py build --verbose ; \
+ 	done
+ 
+ dist/pyme3-$(VERSION).tar.gz dist/pyme3-$(VERSION).tar.gz.asc: copystamp
+-	CFLAGS="$(CFLAGS) -I$(top_srcdir)" \
+-	  $(PYTHON) setup.py sdist --verbose
++	$(PYTHON) setup.py sdist --verbose
+ 	gpg2 --detach-sign --armor dist/pyme3-$(VERSION).tar.gz
+ 
+ .PHONY: sdist
+@@ -72,7 +73,7 @@ upload: dist/pyme3-$(VERSION).tar.gz dist/pyme3-$(VERSION).tar.gz.asc
+ 	twine upload $^
+ 
+ CLEANFILES = gpgme.h errors.i gpgme_wrap.c pyme/gpgme.py \
+-	  copystamp
++	  data.h copystamp
+ 
+ # Remove the rest.
+ #
+diff --git a/lang/python/gpgme.i b/lang/python/gpgme.i
+index 84addae..ac666f4 100644
+--- a/lang/python/gpgme.i
++++ b/lang/python/gpgme.i
+@@ -183,7 +183,7 @@
+    representation of struct gpgme_data for an very efficient check if
+    the buffer has been modified.  */
+ %{
+-#include "src/data.h"	/* For struct gpgme_data.  */
++#include "data.h"	/* For struct gpgme_data.  */
+ %}
+ #endif
+ 
+diff --git a/lang/python/setup.py.in b/lang/python/setup.py.in
+index 31892c1..ce06758 100755
+--- a/lang/python/setup.py.in
++++ b/lang/python/setup.py.in
+@@ -32,13 +32,14 @@ library_dirs = []
+ in_tree = False
+ extra_swig_opts = []
+ extra_macros = dict()
++binary_builddir=os.environ.get('binary_builddir', '../..')
+ 
+-if os.path.exists("../../src/gpgme-config"):
++if os.path.exists(os.path.join(binary_builddir, "src/gpgme-config")):
+     # In-tree build.
+     in_tree = True
+-    gpgme_config = ["../../src/gpgme-config"] + gpgme_config_flags
+-    gpgme_h = "../../src/gpgme.h"
+-    library_dirs = ["../../src/.libs"] # XXX uses libtool internals
++    gpgme_config = [os.path.join(binary_builddir, "src/gpgme-config")] + gpgme_config_flags
++    gpgme_h = os.path.join(binary_builddir, "src/gpgme.h")
++    library_dirs = [os.path.join(binary_builddir, "src/.libs")] # XXX uses libtool internals
+     extra_macros.update(
+         HAVE_DATA_H=1,
+         IN_TREE_BUILD=1,
+-- 
+2.7.3
+
diff --git a/app-crypt/gpgme/gpgme-1.7.0.ebuild b/app-crypt/gpgme/gpgme-1.7.0.ebuild
index 2d507d5aa42e..7ea80becd83d 100644
--- a/app-crypt/gpgme/gpgme-1.7.0.ebuild
+++ b/app-crypt/gpgme/gpgme-1.7.0.ebuild
@@ -4,7 +4,10 @@
 
 EAPI="6"
 
-inherit autotools eutils
+PYTHON_COMPAT=( python2_7 python3_{3,4} )
+DISTUTILS_OPTIONAL=1
+
+inherit autotools distutils-r1 eutils
 
 DESCRIPTION="GnuPG Made Easy is a library for making GnuPG easier to use"
 HOMEPAGE="http://www.gnupg.org/related_software/gpgme"
@@ -13,7 +16,7 @@ SRC_URI="mirror://gnupg/gpgme/${P}.tar.bz2"
 LICENSE="GPL-2 LGPL-2.1"
 SLOT="1/11" # subslot = soname major version
 KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~mips ~ppc ~ppc64 ~sparc ~x86 ~x86-fbsd ~x64-freebsd ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos ~x86-macos ~sparc64-solaris ~x64-solaris ~x86-solaris"
-IUSE="common-lisp static-libs cxx qt5 test"
+IUSE="common-lisp static-libs cxx python qt5 test"
 
 RDEPEND="app-crypt/gnupg
 	>=dev-libs/libassuan-2.0.2
@@ -22,7 +25,8 @@ RDEPEND="app-crypt/gnupg
 		dev-qt/qtcore:5
 		!kde-apps/gpgmepp:4
 		!kde-apps/kdepimlibs:4
-	)"
+	)
+	python? ( ${PYTHON_DEPS} )"
 		#doc? ( app-doc/doxygen[dot] )
 DEPEND="${RDEPEND}
 	qt5? (
@@ -35,11 +39,21 @@ PATCHES=(
 	"${FILESDIR}"/${PN}-1.1.8-et_EE.patch
 	"${FILESDIR}"/${P}-build-tests.patch
 	"${FILESDIR}"/${P}-build-tests-disable.patch
+	"${FILESDIR}"/${P}-build-python.patch
 )
 
+do_python() {
+	if use python; then
+		pushd lang/python > /dev/null || die
+		binary_builddir="${S}" distutils-r1_src_${EBUILD_PHASE}
+		popd > /dev/null
+	fi
+}
+
 src_prepare() {
 	default
 	eautoreconf
+	do_python
 }
 
 src_configure() {
@@ -56,9 +70,26 @@ src_configure() {
 		--includedir="${EPREFIX}/usr/include/gpgme" \
 		--enable-languages="${languages[*]}" \
 		$(use_enable static-libs static)
+
+	python_conf() {
+		econf --enable-languages=
+	}
+	use python && python_foreach_impl python_conf
+	do_python
+}
+
+src_compile() {
+	default
+
+	python_build() {
+		make -C lang/python prepare
+	}
+	use python && python_foreach_impl python_build
+	do_python
 }
 
 src_install() {
 	default
+	do_python
 	prune_libtool_files
 }