[tinyexpr] Add new port

ports/tinyexpr/CMakeLists.txt

@@ -0,0 +1,48 @@
+cmake_minimum_required(VERSION 3.14)
+
+project(tinyexpr LANGUAGES C)
+
+include(CheckSymbolExists)
+include(GNUInstallDirs)
+
+if(WIN32 AND BUILD_SHARED_LIBS)
+    add_library(tinyexpr tinyexpr.c exports.def)
+else()
+    add_library(tinyexpr tinyexpr.c)
+endif()
+
+target_include_directories(
+    tinyexpr
+    PUBLIC
+        $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
+)
+
+# https://stackoverflow.com/questions/32816646/can-cmake-detect-if-i-need-to-link-to-libm-when-using-pow-in-c
+if(NOT POW_FUNCTION_EXISTS AND NOT NEED_LINKING_AGAINST_LIBM)
+    check_symbol_exists(pow "math.h" POW_FUNCTION_EXISTS)
+    if(NOT POW_FUNCTION_EXISTS)
+        unset(POW_FUNCTION_EXISTS CACHE)
+        list(APPEND CMAKE_REQUIRED_LIBRARIES m)
+        check_symbol_exists(pow "math.h" POW_FUNCTION_EXISTS)
+        if(POW_FUNCTION_EXISTS)
+            set(NEED_LINKING_AGAINST_LIBM True CACHE BOOL "" FORCE)
+        else()
+            message(FATAL_ERROR "Failed making the pow() function available")
+        endif()
+    endif()
+endif()
+
+if(NEED_LINKING_AGAINST_LIBM)
+    target_link_libraries(tinyexpr PUBLIC m)
+endif()
+
+set_target_properties(tinyexpr PROPERTIES PUBLIC_HEADER tinyexpr.h)
+
+install(TARGETS tinyexpr EXPORT unofficial-tinyexpr-config)
+
+install(
+    EXPORT unofficial-tinyexpr-config
+    NAMESPACE unofficial::tinyexpr::
+    DESTINATION share/unofficial-tinyexpr
+    PERMISSIONS OWNER_READ OWNER_WRITE GROUP_READ WORLD_READ
+)

ports/tinyexpr/exports.def

@@ -0,0 +1,6 @@
+EXPORTS 
+	te_compile
+	te_eval
+	te_free
+	te_interp
+	te_print

ports/tinyexpr/fix-issue-34.patch

@@ -0,0 +1,16 @@
+diff --git a/tinyexpr.c b/tinyexpr.c
+index 90ed8fc..570f2fd 100755
+--- a/tinyexpr.c
++++ b/tinyexpr.c
+@@ -49,6 +49,11 @@ For log = natural log uncomment the next line. */
+ #define INFINITY (1.0/0.0)
+ #endif
+
++/* https://github.com/codeplea/tinyexpr/issues/34 */
++#ifdef _MSC_VER
++#pragma function(ceil)
++#pragma function(floor)
++#endif
+
+ typedef double (*te_fun2)(double, double);
+

ports/tinyexpr/portfile.cmake

@@ -0,0 +1,27 @@
+vcpkg_from_github(
+    OUT_SOURCE_PATH SOURCE_PATH
+    REPO codeplea/tinyexpr
+    REF ffb0d41b13e5f8d318db95feb071c220c134fe70
+    SHA512 fe4975f8b444a50d7ba8135450a42007a81f1545eebd7775f92307b87b72bc9abee4591e56ddeb76ec9e5aa41f0852ba98c99881d671f47a58caca8bd1ca9999
+    HEAD_REF master
+    PATCHES
+        fix-issue-34.patch
+)
+
+file(COPY ${CMAKE_CURRENT_LIST_DIR}/CMakeLists.txt DESTINATION ${SOURCE_PATH})
+file(COPY ${CMAKE_CURRENT_LIST_DIR}/exports.def DESTINATION ${SOURCE_PATH})
+
+vcpkg_configure_cmake(
+    SOURCE_PATH ${SOURCE_PATH}
+    PREFER_NINJA
+)
+
+vcpkg_install_cmake()
+
+vcpkg_copy_pdbs()
+
+vcpkg_fixup_cmake_targets(CONFIG_PATH share/unofficial-${PORT} TARGET_PATH share/unofficial-${PORT})
+
+file(REMOVE_RECURSE ${CURRENT_PACKAGES_DIR}/debug/include)
+
+file(INSTALL ${SOURCE_PATH}/LICENSE DESTINATION ${CURRENT_PACKAGES_DIR}/share/${PORT} RENAME copyright)

ports/tinyexpr/vcpkg.json

@@ -0,0 +1,7 @@
+{
+  "name": "tinyexpr",
+  "version-string": "2020-09-25",
+  "description": "Tiny recursive descent parser and evaluation engine in C",
+  "homepage": "https://codeplea.com/tinyexpr",
+  "license": "Zlib"
+}