libdispatch: add package

packages/libdispatch/build.sh

@@ -0,0 +1,8 @@
+TERMUX_PKG_HOMEPAGE=https://github.com/apple/swift-corelibs-libdspatch
+TERMUX_PKG_DESCRIPTION="The libdispatch project, for concurrency on multicore hardware"
+TERMUX_PKG_LICENSE="Apache-2.0"
+TERMUX_PKG_VERSION=2019-09-04
+TERMUX_PKG_SRCURL=https://github.com/apple/swift-corelibs-libdispatch/archive/swift-DEVELOPMENT-SNAPSHOT-${TERMUX_PKG_VERSION}-a.tar.gz
+TERMUX_PKG_SHA256=fada9fc9f4c6fac1c8b11d4187deb67329744f412df656d1b77122765db06147
+TERMUX_PKG_DEPENDS="libc++"
+TERMUX_PKG_EXTRA_CONFIGURE_ARGS="-DENABLE_TESTING=OFF"

packages/libdispatch/src-CMakeLists.txt.patch

@@ -0,0 +1,14 @@
+diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
+index 2809c11..368d428 100644
+--- a/src/CMakeLists.txt
++++ b/src/CMakeLists.txt
+@@ -246,6 +246,9 @@ if(CMAKE_SYSTEM_NAME STREQUAL Darwin)
+                  "-Xlinker -dead_strip"
+                  "-Xlinker -alias_list -Xlinker ${PROJECT_SOURCE_DIR}/xcodeconfig/libdispatch.aliases")
+ endif()
++if(CMAKE_SYSTEM_NAME STREQUAL Android)
++  set_property(TARGET dispatch APPEND PROPERTY LINK_LIBRARIES "log")
++endif()
+ 
+ install(TARGETS
+           dispatch