CMake find_package 与 GLEW
CMake find_package with GLEW
我正在尝试为我使用 GLEW 的项目设置一个 CMakeLists.txt 文件。我一直这样做：
find_path(GLEW_INCLUDE_DIR GL/glew.h)
find_library(GLEW_LIBRARY_RELEASE glew32)
find_library(GLEW_LIBRARY_DEBUG glew32d)
target_include_directories(${APP_NAME} PUBLIC ${GLEW_INCLUDE_DIR})
target_link_libraries(${APP_NAME} optimized ${GLEW_LIBRARY_RELEASE}
debug ${GLEW_LIBRARY_DEBUG})
这种方法有效，但我想使用 find_package 方法，因为我认为它更好。
我在这个网站上找到了一些例子，比如这个：Adding GLEW to project (CMake) 建议做这样的事情：
find_package(GLEW REQUIRED)
target_link_libraries(${APP_NAME} GLEW::GLEW)
但是当我尝试这样做时，它会在配置阶段产生错误：
CMake Error at C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:16 (include):
include could not find load file:
C:/libs/glew-2.1.0/build/cmake/glew-targets.cmake
Call Stack (most recent call first):
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:64 (get_property):
get_property could not find TARGET GLEW::glew. Perhaps it has not yet been
created.
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:64 (get_property):
get_property could not find TARGET GLEW::glew. Perhaps it has not yet been
created.
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:64 (get_property):
get_property could not find TARGET GLEW::glew. Perhaps it has not yet been
created.
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:64 (get_property):
get_property could not find TARGET GLEW::glew. Perhaps it has not yet been
created.
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:64 (get_property):
get_property could not find TARGET GLEW::glew. Perhaps it has not yet been
created.
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:64 (get_property):
get_property could not find TARGET GLEW::glew. Perhaps it has not yet been
created.
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:64 (get_property):
get_property could not find TARGET GLEW::glew. Perhaps it has not yet been
created.
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:64 (get_property):
get_property could not find TARGET GLEW::glew. Perhaps it has not yet been
created.
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:64 (get_property):
get_property could not find TARGET GLEW::glew. Perhaps it has not yet been
created.
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:64 (get_property):
get_property could not find TARGET GLEW::glew. Perhaps it has not yet been
created.
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:64 (get_property):
get_property could not find TARGET GLEW::glew. Perhaps it has not yet been
created.
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:64 (get_property):
get_property could not find TARGET GLEW::glew. Perhaps it has not yet been
created.
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:64 (get_property):
get_property could not find TARGET GLEW::glew. Perhaps it has not yet been
created.
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:64 (get_property):
get_property could not find TARGET GLEW::glew. Perhaps it has not yet been
created.
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:64 (get_property):
get_property could not find TARGET GLEW::glew. Perhaps it has not yet been
created.
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:64 (get_property):
get_property could not find TARGET GLEW::glew. Perhaps it has not yet been
created.
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:64 (get_property):
get_property could not find TARGET GLEW::glew. Perhaps it has not yet been
created.
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:64 (get_property):
get_property could not find TARGET GLEW::glew. Perhaps it has not yet been
created.
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:73 (get_target_property):
get_target_property() called with non-existent target "GLEW::glew".
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
所以看起来它正在 C:/libs/glew-2.1.0/build/cmake 中寻找 glew-targets.cmake 这是我在 CMake GUI 中设置的 GLEW_DIR 因为它有 glew-config.cmake 文件。
但是 glew-targets.cmake 文件实际上在 C:\libs\glew-2.1.0\build\cmake\build\CMakeFiles\Export\lib\cmake\glew 中，当我在 GLEW 上 运行 CMake 时创建了它。
为什么它找错了地方？
我从 http://glew.sourceforge.net/ 下载了 GLEW 作为 .ZIP 源。然后我在上面 运行 CMake，同时指定 C:/libs/glew-2.1.0/build/cmake 作为源目录和 C:/libs/glew-2.1.0/build/cmake/build 作为构建目录。
那么我应该怎么做呢？
This approach works but I want to use the find_package approach because I think it is better.
更好，因为您无法了解 glew 的所有使用要求。 find_package 命令具有从支持的库（或支持 CMake 的库）中检测需求的所有必要条件。
So it looks like it is looking for glew-targets.cmake in C:/libs/glew-2.1.0/build/cmake which is the GLEW_DIR I set in CMake GUI because it has the glew-config.cmake file.
问题是 GLEW 不支持从它的构建树导入。
要使其正常工作，只需在使用 CMake 构建 GLEW 时设置安装前缀即可：
-DCMAKE_INSTALL_PREFIX=C:/libs/glew-2.1.0/build/cmake/install
然后，安装库。它应该安装在指定的目录中。
然后，您应该将 glew_DIR 变量设置为该目录：
set(glew_DIR "C:/libs/glew-2.1.0/build/cmake/install/lib/cmake/glew")
您也可以将前缀路径设置为安装目录：
list(APPEND CMAKE_PREFIX_PATH "C:/libs/glew-2.1.0/build/cmake/install")
它找到了错误的文件，因为在他们的源目录中，glew 有一个名为 glew-config.cmake (IMO it should be in a subfolder to avoid situation like this one) 的文件。
构建目录还应包含配置文件。
我正在尝试为我使用 GLEW 的项目设置一个 CMakeLists.txt 文件。我一直这样做：
find_path(GLEW_INCLUDE_DIR GL/glew.h)
find_library(GLEW_LIBRARY_RELEASE glew32)
find_library(GLEW_LIBRARY_DEBUG glew32d)
target_include_directories(${APP_NAME} PUBLIC ${GLEW_INCLUDE_DIR})
target_link_libraries(${APP_NAME} optimized ${GLEW_LIBRARY_RELEASE}
debug ${GLEW_LIBRARY_DEBUG})
这种方法有效，但我想使用 find_package 方法，因为我认为它更好。
我在这个网站上找到了一些例子，比如这个：Adding GLEW to project (CMake) 建议做这样的事情：
find_package(GLEW REQUIRED)
target_link_libraries(${APP_NAME} GLEW::GLEW)
但是当我尝试这样做时，它会在配置阶段产生错误：
CMake Error at C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:16 (include):
include could not find load file:
C:/libs/glew-2.1.0/build/cmake/glew-targets.cmake
Call Stack (most recent call first):
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:64 (get_property):
get_property could not find TARGET GLEW::glew. Perhaps it has not yet been
created.
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:64 (get_property):
get_property could not find TARGET GLEW::glew. Perhaps it has not yet been
created.
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:64 (get_property):
get_property could not find TARGET GLEW::glew. Perhaps it has not yet been
created.
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:64 (get_property):
get_property could not find TARGET GLEW::glew. Perhaps it has not yet been
created.
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:64 (get_property):
get_property could not find TARGET GLEW::glew. Perhaps it has not yet been
created.
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:64 (get_property):
get_property could not find TARGET GLEW::glew. Perhaps it has not yet been
created.
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:64 (get_property):
get_property could not find TARGET GLEW::glew. Perhaps it has not yet been
created.
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:64 (get_property):
get_property could not find TARGET GLEW::glew. Perhaps it has not yet been
created.
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:64 (get_property):
get_property could not find TARGET GLEW::glew. Perhaps it has not yet been
created.
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:64 (get_property):
get_property could not find TARGET GLEW::glew. Perhaps it has not yet been
created.
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:64 (get_property):
get_property could not find TARGET GLEW::glew. Perhaps it has not yet been
created.
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:64 (get_property):
get_property could not find TARGET GLEW::glew. Perhaps it has not yet been
created.
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:64 (get_property):
get_property could not find TARGET GLEW::glew. Perhaps it has not yet been
created.
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:64 (get_property):
get_property could not find TARGET GLEW::glew. Perhaps it has not yet been
created.
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:64 (get_property):
get_property could not find TARGET GLEW::glew. Perhaps it has not yet been
created.
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:64 (get_property):
get_property could not find TARGET GLEW::glew. Perhaps it has not yet been
created.
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:64 (get_property):
get_property could not find TARGET GLEW::glew. Perhaps it has not yet been
created.
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:64 (get_property):
get_property could not find TARGET GLEW::glew. Perhaps it has not yet been
created.
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
CMake Error at C:/libs/glew-2.1.0/build/cmake/CopyImportedTargetProperties.cmake:73 (get_target_property):
get_target_property() called with non-existent target "GLEW::glew".
Call Stack (most recent call first):
C:/libs/glew-2.1.0/build/cmake/glew-config.cmake:56 (copy_imported_target_properties)
C:/Program Files/CMake/share/cmake-3.15/Modules/FindGLEW.cmake:62 (find_package)
CMakeLists.txt:14 (find_package)
所以看起来它正在 C:/libs/glew-2.1.0/build/cmake 中寻找 glew-targets.cmake 这是我在 CMake GUI 中设置的 GLEW_DIR 因为它有 glew-config.cmake 文件。
但是 glew-targets.cmake 文件实际上在 C:\libs\glew-2.1.0\build\cmake\build\CMakeFiles\Export\lib\cmake\glew 中，当我在 GLEW 上 运行 CMake 时创建了它。
为什么它找错了地方？
我从 http://glew.sourceforge.net/ 下载了 GLEW 作为 .ZIP 源。然后我在上面 运行 CMake，同时指定 C:/libs/glew-2.1.0/build/cmake 作为源目录和 C:/libs/glew-2.1.0/build/cmake/build 作为构建目录。
那么我应该怎么做呢？
This approach works but I want to use the find_package approach because I think it is better.
更好，因为您无法了解 glew 的所有使用要求。 find_package 命令具有从支持的库（或支持 CMake 的库）中检测需求的所有必要条件。
So it looks like it is looking for glew-targets.cmake in C:/libs/glew-2.1.0/build/cmake which is the GLEW_DIR I set in CMake GUI because it has the glew-config.cmake file.
问题是 GLEW 不支持从它的构建树导入。
要使其正常工作，只需在使用 CMake 构建 GLEW 时设置安装前缀即可：
-DCMAKE_INSTALL_PREFIX=C:/libs/glew-2.1.0/build/cmake/install
然后，安装库。它应该安装在指定的目录中。
然后，您应该将 glew_DIR 变量设置为该目录：
set(glew_DIR "C:/libs/glew-2.1.0/build/cmake/install/lib/cmake/glew")
您也可以将前缀路径设置为安装目录：
list(APPEND CMAKE_PREFIX_PATH "C:/libs/glew-2.1.0/build/cmake/install")
它找到了错误的文件，因为在他们的源目录中，glew 有一个名为 glew-config.cmake (IMO it should be in a subfolder to avoid situation like this one) 的文件。
构建目录还应包含配置文件。