[septag-sx] Add new port

ports/septag-sx/CONTROL

@@ -0,0 +1,3 @@
+Source: septag-sx
+Version: 2019-05-07-1
+Description: Portable base library for C programmers, designed for performance and simplicity.

ports/septag-sx/portfile.cmake

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+include(vcpkg_common_functions)
+
+if(TARGET_TRIPLET MATCHES "(uwp|arm)")
+    message(FATAL_ERROR "septag-sx doesn't support ${TARGET_TRIPLET} currently.")
+endif()
+
+vcpkg_from_github(
+    OUT_SOURCE_PATH SOURCE_PATH
+    REPO septag/sx
+    REF b70567a52636f9ecfdb904c586a957a806efc990
+    SHA512 8945476b428418d3c7845afd831503f43fd44672a9b3506576c5baf50f55739327275a8be97a323f3ae146f84b76bbe266ac7b5df1b85cb05a826ed5e30b9547
+    HEAD_REF master
+)
+
+string(COMPARE EQUAL "${VCPKG_LIBRARY_LINKAGE}" "dynamic" SX_SHARED_LIB)
+
+vcpkg_configure_cmake(
+    SOURCE_PATH ${SOURCE_PATH}
+    OPTIONS
+        -DSX_BUILD_TESTS=OFF
+        -DSX_SHARED_LIB=${SX_SHARED_LIB}
+)
+
+vcpkg_install_cmake()
+
+vcpkg_copy_pdbs()
+
+vcpkg_fixup_cmake_targets(CONFIG_PATH lib/cmake/sx TARGET_PATH share/sx)
+
+if(VCPKG_LIBRARY_LINKAGE STREQUAL dynamic)
+    vcpkg_replace_string(${CURRENT_PACKAGES_DIR}/include/sx/config.h
+        "define SX_CONFIG_SHARED_LIB 0"
+        "define SX_CONFIG_SHARED_LIB 1"
+    )
+endif()
+
+file(REMOVE_RECURSE ${CURRENT_PACKAGES_DIR}/debug/include)
+
+# Handle copyright
+configure_file(${SOURCE_PATH}/LICENSE ${CURRENT_PACKAGES_DIR}/share/${PORT}/copyright COPYONLY)
+
+# CMake integration test
+vcpkg_test_cmake(PACKAGE_NAME sx)