Add CMake build system support

CMakeLists.txt

@@ -0,0 +1,53 @@
+cmake_minimum_required(VERSION 2.8.4)
+
+project(tinyexpr)
+
+option(build_tinyexpr_test "Build TinyExpr tests." OFF)
+option(build_tinyexpr_test_pr "Build TinyExpr tests PR." OFF)
+option(build_tinyexpr_bench "Build TinyExpr benchmark." OFF)
+option(build_tinyexpr_example "Build TinyExpr example." OFF)
+option(build_tinyexpr_example2 "Build TinyExpr example 2." OFF)
+option(build_tinyexpr_example3 "Build TinyExpr example 3." OFF)
+
+find_library(MATH_LIB m)
+
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -ansi -Wall -Wshadow -O2")
+
+set(SOURCE_FILES
+        tinyexpr.c
+        tinyexpr.h
+        )
+
+add_library(tinyexpr STATIC ${SOURCE_FILES})
+target_link_libraries(tinyexpr ${MATH_LIB})
+
+if (build_tinyexpr_test)
+    add_executable(tinyexpr_test test.c)
+    target_link_libraries(tinyexpr_test tinyexpr)
+endif()
+
+if (build_tinyexpr_test_pr)
+    add_definitions(-DTE_POW_FROM_RIGHT -DTE_NAT_LOG)
+    add_executable(tinyexpr_test_pr test.c)
+    target_link_libraries(tinyexpr_test_pr tinyexpr)
+endif()
+
+if (build_tinyexpr_bench)
+    add_executable(tinyexpr_benchmark benchmark.c)
+    target_link_libraries(tinyexpr_benchmark tinyexpr)
+endif()
+
+if (build_tinyexpr_example)
+    add_executable(tinyexpr_example example.c)
+    target_link_libraries(tinyexpr_example tinyexpr)
+endif()
+
+if (build_tinyexpr_example2)
+    add_executable(tinyexpr_example2 example2.c)
+    target_link_libraries(tinyexpr_example2 tinyexpr)
+endif()
+
+if (build_tinyexpr_example3)
+    add_executable(tinyexpr_example3 example3.c)
+    target_link_libraries(tinyexpr_example3 tinyexpr)
+endif()