python3-libselinux: new package

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
[strip C library after adding it to openwrt repository]
Signed-off-by: W. Michael Petullo <mike@flyn.org>

lang/python/python3-libselinux/patches/010-setup-py-custom-cc.patch

@@ -0,0 +1,12 @@
+diff -u --recursive libselinux-3.1-vanilla/src/Makefile libselinux-3.1/src/Makefile
+--- libselinux-3.1-vanilla/src/Makefile	2020-07-10 11:17:15.000000000 -0400
++++ libselinux-3.1/src/Makefile	2020-07-12 14:33:56.337229240 -0400
+@@ -131,7 +131,7 @@
+ all: $(LIBA) $(LIBSO) $(LIBPC)
+ 
+ pywrap: all selinuxswig_python_exception.i
+-	CFLAGS="$(CFLAGS) $(SWIG_CFLAGS)" $(PYTHON) setup.py build_ext
++	LDSHARED="$(CC) -shared" CFLAGS="$(CFLAGS) $(SWIG_CFLAGS)" $(PYTHON) setup.py build_ext
+ 
+ rubywrap: all $(SWIGRUBYSO)
+ 

lang/python/python3-libselinux/patches/020-Make-use-of-variables-when-defining-libdir-and-inclu.patch

@@ -0,0 +1,26 @@
+Pkg-config definitions commonly make use of ${exec_prefix} and ${prefix}
+when defining libdir and includedir, respectively. OpenWrt, for example,
+relies on this when it adjusts things for cross compiling.
+
+Signed-off-by: W. Michael Petullo <mike@flyn.org>
+---
+ src/libselinux.pc.in | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/src/libselinux.pc.in b/src/libselinux.pc.in
+index 7c66b1fa..d9d58125 100644
+--- a/src/libselinux.pc.in
++++ b/src/libselinux.pc.in
+@@ -1,7 +1,7 @@
+ prefix=@prefix@
+ exec_prefix=${prefix}
+-libdir=@libdir@
+-includedir=@includedir@
++libdir=${exec_prefix}/lib
++includedir=${prefix}/include
+ 
+ Name: libselinux
+ Description: SELinux utility library
+-- 
+2.26.2
+