[Buildroot] [PATCH/next v2 1/2]: pybind11: new package

* [Buildroot] [PATCH/next v2 1/2]: pybind11: new package
@ 2021-12-04 12:05 guillaume.bressaix
  2021-12-04 12:05 ` [Buildroot] [PATCH/next v2 2/2]: remove python-pybind guillaume.bressaix
  2021-12-04 13:46 ` [Buildroot] [PATCH/next v2 1/2]: pybind11: new package Yann E. MORIN
  0 siblings, 2 replies; 5+ messages in thread
From: guillaume.bressaix @ 2021-12-04 12:05 UTC (permalink / raw)
  To: buildroot; +Cc: thomas.petazzoni, yann.morin.1998, asafka7, Guillaume W. Bres

From: "Guillaume W. Bres" <guillaume.bressaix@gmail.com>

fixes http://autobuild.buildroot.net/results/b89f1de64b308dffa73675f1f31ccb0b7be5a10d
fixes http://autobuild.buildroot.net/results/d0287b7f64f206b0f074908c5780a3632e0cb799
fixes http://autobuild.buildroot.net/results/27efb545a5a719a5581c8f746d3a3555ff4216ce
fixes http://autobuild.buildroot.net/results/d2f0a0ad8f6c7178517df109e7d885dac9134c3a
fixes http://autobuild.buildroot.net/results/b57e9a3279260dae4a590f9421238fcabb2f7cab
fixes http://autobuild.buildroot.net/results/515e6f2fc6b5780260d98d6bb52b541ce4bf1afe
fixes http://autobuild.buildroot.net/results/d89c4ecc81222d4f80c951da2232d2e393fa1c69
list goes on..

---
v2: Reviewed by gwen@trabucayre.com,
Removed some non needed empty lines,
force -DFINDPYTHON=OFF when using pybind11 without python,
handle legacy package properly in a seperate patch

v1: python-pybind was not the right approach and is in failure since
it's been upgraded to V2.6.1.

Building with setup.py now requires a cmake build first.
With this new approach we can build the package with cmake
for python bindings in C++ AND we also have the
C++ bindings in python as an option (depending & requiring the first one).

I make this a host-only package, in the sense that other packages will
require it at build time, and I don't forsee any reasons to have
such a package as a target package.

Signed-off-by: Guillaume W. Bres <guillaume.bressaix@gmail.com>
---
 DEVELOPERS                     |  1 +
 package/Config.in              |  1 +
 package/pybind11/Config.in     | 25 +++++++++++++++++++++
 package/pybind11/pybind11.hash |  3 +++
 package/pybind11/pybind11.mk   | 41 ++++++++++++++++++++++++++++++++++
 5 files changed, 71 insertions(+)
 create mode 100644 package/pybind11/Config.in
 create mode 100644 package/pybind11/pybind11.hash
 create mode 100644 package/pybind11/pybind11.mk

diff --git a/DEVELOPERS b/DEVELOPERS
index 6f812eb564..8a04efa63f 100644
--- a/DEVELOPERS
+++ b/DEVELOPERS
@@ -1105,6 +1105,7 @@ F:	package/libxcrypt/
 F:	package/liquid-dsp/
 F:	package/pixiewps/
 F:	package/python-pybind/
+F:	package/pybind11/
 F:	package/reaver/
 
 N:	Guo Ren <ren_guo@c-sky.com>
diff --git a/package/Config.in b/package/Config.in
index 311004db2c..5749118ee3 100644
--- a/package/Config.in
+++ b/package/Config.in
@@ -2006,6 +2006,7 @@ endif
 	source "package/protobuf/Config.in"
 	source "package/protobuf-c/Config.in"
 	source "package/protozero/Config.in"
+	source "package/pybind11/Config.in"
 	source "package/qhull/Config.in"
 	source "package/qlibc/Config.in"
 	source "package/riemann-c-client/Config.in"
diff --git a/package/pybind11/Config.in b/package/pybind11/Config.in
new file mode 100644
index 0000000000..4fc6c5eebc
--- /dev/null
+++ b/package/pybind11/Config.in
@@ -0,0 +1,25 @@
+comment "pybind11 needs a toolchain w/ C++, wchar"
+	depends on !BR2_INSTALL_LIBSTDCPP || !BR2_USE_WCHAR
+
+config BR2_PACKAGE_PYBIND11
+	bool "pybind11"
+	depends on BR2_USE_WCHAR # boost
+	depends on BR2_INSTALL_LIBSTDCPP # boost
+	depends on !BR2_TOOLCHAIN_HAS_GCC_BUG_64735 # boost-thread
+	select BR2_PACKAGE_BOOST
+	help
+	  Pybind11 is a lightweight header-only library that exposes C++
+	  types in Python and vice versa, mainly to create Python
+	  bindings of existing C++ code.
+
+	  http://pybind11.readthedocs.org/en/master
+
+if BR2_PACKAGE_PYBIND11
+
+config BR2_PACKAGE_PYBIND11_WITH_PYTHON
+	bool "pybind11-python"
+	depends on BR2_PACKAGE_PYTHON3
+	help
+	  Activate support for python
+
+endif
diff --git a/package/pybind11/pybind11.hash b/package/pybind11/pybind11.hash
new file mode 100644
index 0000000000..ab8825bf04
--- /dev/null
+++ b/package/pybind11/pybind11.hash
@@ -0,0 +1,3 @@
+# Locally calculated
+sha256 f1bcc07caa568eb312411dde5308b1e250bd0e1bc020fae855bf9f43209940cc  pybind11-2.8.1.tar.gz
+sha256 83965b843b98f670d3a85bd041ed4b372c8ec50d7b4a5995a83ac697ba675dcb  LICENSE
diff --git a/package/pybind11/pybind11.mk b/package/pybind11/pybind11.mk
new file mode 100644
index 0000000000..a67ce237ea
--- /dev/null
+++ b/package/pybind11/pybind11.mk
@@ -0,0 +1,41 @@
+################################################################################
+#
+# pybind11
+#
+################################################################################
+
+PYBIND11_VERSION = 2.8.1
+PYBIND11_SITE = $(call github,pybind,pybind11,v$(PYBIND11_VERSION))
+PYBIND11_LICENSE = BSD-3-Clause
+PYBIND11_LICENSE_FILES = LICENSE
+PYBIND11_INSTALL_STAGING = YES
+PYBIND11_SUPPORTS_IN_SOURCE_BUILD = YES
+
+HOST_PYBIND11_CONF_OPTS = \
+	-DBUILD_DOCS=OFF \
+	-DDOWNLOAD_EIGEN=OFF
+
+# pybind11 python support activation
+ifeq ($(BR2_PACKAGE_PYBIND11_WITH_PYTHON),y)
+HOST_PYBIND11_DEPENDENCIES += host-python3
+
+# pybind11 with python requires cmake install in $(@D)
+HOST_PYBIND11_CONF_OPTS += \
+	-DCMAKE_INSTALL_PREFIX=$(@D)/pybind11 \
+	-DPYTHON=$(HOST_DIR)/bin/python3 \
+	-DPYTHON_PREFIX=$(STAGING_DIR)/usr \
+	-DPYBIND_FINDPYTHON=ON \
+	-DPYBIND11_NOPYTHON=OFF
+
+define PYBIND11_PYTHON_BUILD
+	cd $(@D) && $(HOST_DIR)/bin/python setup.py install
+endef
+
+HOST_PYBIND11_POST_INSTALL_HOOKS += PYBIND11_PYTHON_BUILD
+else
+HOST_PYBIND11_CONF_OPTS += \
+	-DPYBIND_FINDPYTHON=OFF \
+	-DPYBIND11_NOPYTHON=ON
+endif
+
+$(eval $(host-cmake-package))
-- 
2.20.1

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