[ptxdist] [PATCH 1/4] host-cython: add CROSS_CYTHON_ENV declaration

[Alexander Aring <alex.aring@gmail.com>]

This patch adds a CROSS_CYTHON_ENV declaration to the host-cython make
rule file. Cython usually a host binary "cython", that's why it is a
host tool. Besides cython there exist a way to use cython in the
setup.py framework of python. Then we need to add to $(CROSS_PYTHON) an
env to "add" a site-package search path to the $(PTXCONF_SYSROOT_HOST).

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
---
Hi Michael,

for examples you can see patch 2/4 and 3/4:
("python-routing: add new package")
("python-rplicmp: add new package")

these packages will use the $(CROSS_CYTHON_ENV).

 rules/host-cython.make | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/rules/host-cython.make b/rules/host-cython.make
index 212b12d..a12dfe4 100644
--- a/rules/host-cython.make
+++ b/rules/host-cython.make
@@ -25,6 +25,8 @@ HOST_CYTHON_SOURCE	:= $(SRCDIR)/$(HOST_CYTHON).$(HOST_CYTHON_SUFFIX)
 HOST_CYTHON_DIR		:= $(HOST_BUILDDIR)/$(HOST_CYTHON)
 HOST_CYTHON_LICENSE	:= APLv2
 
+CROSS_CYTHON_ENV	:= PYTHONUSERBASE=$(PTXCONF_SYSROOT_HOST)
+
 # ----------------------------------------------------------------------------
 # Prepare
 # ----------------------------------------------------------------------------
-- 
1.9.1


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