CMake: added MESHOPT_ prefix for CMake options (zeux#90)

CMakeLists.txt

@@ -7,9 +7,9 @@ endif()
 
 project(meshoptimizer VERSION 0.13 LANGUAGES CXX)
 
-option(BUILD_DEMO "Build demo" OFF)
-option(BUILD_TOOLS "Build tools" OFF)
-option(BUILD_SHARED_LIBS "Build shared libraries" OFF)
+option(MESHOPT_BUILD_DEMO "Build demo" OFF)
+option(MESHOPT_BUILD_TOOLS "Build tools" OFF)
+option(MESHOPT_BUILD_SHARED_LIBS "Build shared libraries" OFF)
 
 set(SOURCES
     src/meshoptimizer.h
@@ -38,7 +38,7 @@ endif()
 add_library(meshoptimizer ${SOURCES})
 target_include_directories(meshoptimizer INTERFACE "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/src>")
 
-if(BUILD_SHARED_LIBS)
+if(MESHOPT_BUILD_SHARED_LIBS)
     set_target_properties(meshoptimizer PROPERTIES CXX_VISIBILITY_PRESET hidden)
     set_target_properties(meshoptimizer PROPERTIES VISIBILITY_INLINES_HIDDEN ON)
 
@@ -52,17 +52,17 @@ endif()
 
 set(TARGETS meshoptimizer)
 
-if(BUILD_DEMO)
+if(MESHOPT_BUILD_DEMO)
     add_executable(demo demo/main.cpp demo/miniz.cpp demo/tests.cpp tools/meshloader.cpp)
     target_link_libraries(demo meshoptimizer)
 endif()
 
-if(BUILD_TOOLS)
+if(MESHOPT_BUILD_TOOLS)
     add_executable(gltfpack tools/gltfpack.cpp tools/meshloader.cpp tools/basistoktx.cpp)
     target_link_libraries(gltfpack meshoptimizer)
     list(APPEND TARGETS gltfpack)
 
-    if(BUILD_SHARED_LIBS)
+    if(MESHOPT_BUILD_SHARED_LIBS)
         string(CONCAT RPATH "$ORIGIN/../" ${CMAKE_INSTALL_LIBDIR})
         set_target_properties(gltfpack PROPERTIES INSTALL_RPATH ${RPATH})
     endif()