hybris/pulsecore-private-headers: new package (!448)

Essentially needed for packaging pulseaudio-modules-droid.

This package is basically a set of headers taken from
original pulseaudio tarball and one hand-made pkg-config file.

All versions listed in this package and in pulsecore.pc should
match pulseaudio's MAJOR.MINOR version, otherwise everything
will break. All library paths listed in pulsecore.pc should
match pulseaudio paths, too. Because library itself is built
and installed by pulseaudio package (pulseaudio-dev).

For motivation behind this see:
https://git.sailfishos.org/mer-core/pulseaudio/commit/9316d7ba941516cabfc080a0099fad80a231582d

TL;DR pulsecore is an internal pulseaudio library needed to build
pulseaudio's own modules, not meant to be used py pulseaudio clients.
It is not exported since pulseaudio-8. We fake an "export"
of this library, since we need it to build an out-of-tree module.

hybris/pulsecore-private-headers/0001-core-util-add-socket-h.patch

+diff --git a/src/pulsecore/core-util.h b/src/pulsecore/core-util.h
+index e28b6aa..fb0f941 100644
+--- a/src/pulsecore/core-util.h
++++ b/src/pulsecore/core-util.h
+@@ -26,6 +26,7 @@
+ #include <stdarg.h>
+ #include <stdio.h>
+ #include <string.h>
++#include <sys/socket.h>
+ 
+ #ifdef HAVE_SYS_RESOURCE_H
+ #include <sys/resource.h>

hybris/pulsecore-private-headers/APKBUILD

+# Contributor: Alexey Min <alexey.min@gmail.com>
+# Maintainer: Alexey Min <alexey.min@gmail.com>
+pkgname=pulsecore-private-headers
+pkgver=12.2
+pkgrel=0
+pkgdesc="PulseAudio internal development library (headers and pkg-config)"
+url="http://www.freedesktop.org/wiki/Software/PulseAudio"
+arch="all"
+license="LGPL-2.1-or-later"
+depends="pulseaudio-dev libpulse pkgconfig"
+options="!check"  # No test suite available
+source="
+	https://freedesktop.org/software/pulseaudio/releases/pulseaudio-$pkgver.tar.xz
+	pulsecore.pc
+	0001-core-util-add-socket-h.patch
+"
+
+builddir="$srcdir/pulseaudio-$pkgver"
+
+build() {
+	sed -i "s/@PA_MAJORMINOR@/$pkgver/" "$srcdir"/pulsecore.pc
+}
+
+package() {
+	install -Dm644 "$srcdir"/pulsecore.pc "$pkgdir"/usr/lib/pkgconfig/pulsecore.pc
+
+	mkdir -p "$pkgdir"/usr/include/pulsecore
+	mkdir -p "$pkgdir"/usr/include/pulsecore/filter
+	cp -r "$builddir"/src/pulsecore/*.h "$pkgdir"/usr/include/pulsecore/
+	cp -r "$builddir"/src/pulsecore/filter/*.h "$pkgdir"/usr/include/pulsecore/filter/
+}
+
+sha512sums="877754c1838b3cb042dbc18a5f1cc3cf313ffcaee7a64703330406d1f86279c34f1107634ac3083b158365e6757fbacf5ec406bc3c5788d291de67b77a561a4e  pulseaudio-12.2.tar.xz
+e419ceab4779e061fb0378fc4ce0d24e2a738610b5d837866c47e9fd8044c206bb32485f7aaf0df336c2944d67b856fdee95ea6ca9e7c12954d15ae521adad66  pulsecore.pc
+4e24295e5e03d3f89f5197657e7946c56e9d776c1b64306d2798075df322700ca1f89a19f1fa9ab7f379b1b33196eb316dc17a20efdc5b0e41ff47c41b567e34  0001-core-util-add-socket-h.patch"

hybris/pulsecore-private-headers/pulsecore.pc

+prefix=/usr
+libdir=/usr/lib
+includedir=${prefix}/include
+ver=@PA_MAJORMINOR@
+
+Name: pulsecore
+Description: Module building interface for pulseaudio
+Version: @PA_MAJORMINOR@
+Libs: -L${libdir} -L${libdir}/pulseaudio -L${libdir}/pulse-${ver}/modules -lpulsecore-${ver} -lpulsecommon-${ver} -lpulse
+Cflags: -D_REENTRANT -D__INCLUDED_FROM_PULSE_AUDIO -DPA_DEFAULT_CONFIG_DIR=\"/etc/pulse\" -I${includedir}