实际上,我创建了一个 CMake 脚本,以在 win32 平台上使用 MSYS/MinGW 本地化 DevIL 库。在尝试查找 DevIL 时,我已经扩展了原始 FindDevIL CMake 脚本以考虑 MinGW 根:
project (DevILTest)
cmake_minimum_required(VERSION 2.6)
FIND_PACKAGE(OpenGL)
IF(OPENGL_FOUND)
MESSAGE(STATUS "OpenGL render API found.")
MESSAGE(STATUS "Detected OpenGL path is : ${OPENGL_LIBRARIES}")
ENDIF(OPENGL_FOUND)
#Determine DevIL specific header file
FIND_PATH(IL_INCLUDE_DIR il.h
PATH_SUFFIXES include/IL
PATHS c:/mingw
DOC "The path the the directory that contains il.h"
)
MESSAGE("Found DevIL includes at: ${IL_INCLUDE_DIR}")
#Determine DevIL library
FIND_LIBRARY(IL_LIBRARY NAMES DEVIL
PATH_SUFFIXES lib
PATHS c:/mingw
DOC "The file that corresponds to the base il library."
)
MESSAGE("Found DevIL library at: ${IL_LIBRARY}")
SET (Sources
winmain.cpp
)
SET(CMAKE_VERBOSE_MAKEFILE ON)
SET(IL_INCLUDE_DIR /c/binrev/development/mingw/include)
INCLUDE_DIRECTORIES(${CMAKE_CURRENT_BINARY_DIR}
${CMAKE_CURRENT_SOURCE_DIR}/src
${IL_INCLUDE_DIR}
/usr/include
/usr/local/include
)
add_executable (DevILTest ${Sources})
SET(EXECUTABLE_OUTPUT_PATH ${CMAKE_SOURCE_DIR})
TARGET_LINK_LIBRARIES(DevILTest ${OPENGL_LIBRARIES} ${IL_LIBRARY})
DevIL .dll 文件放置在 bin 子文件夹中,DevIL.lib 和 DevIL.a 文件位于 MinGW 根目录 (c:/mingw) 的 lib 子文件夹中。我使用 find_library() 检查库是否存在。
-- OpenGL render API found.
-- Detected OpenGL path is : glu32;opengl32
-- Found DevIL includes at: C:/mingw/include/IL
-- Found DevIL library at: C:/mingw/bin/DevIL.dll
Find_libary() 始终返回 dll 文件的路径 - 但我无法使用 MinGW 链接到该库:
Linking CXX executable DevILTest.exe
/C/binrev/development/mingw/bin/g++.exe "CMakeFiles/DevILTest.dir /winmain.cpp.obj" -o DevILTest.exe -Wl,--out-implib,libDevILTest.dll.a -Wl,--ma
32 -lopengl32 DevIL.dll -lkernel32 -luser32 -lgdi32 -lwinspool -lshell32 -lole32 -loleaut32 -luuid -lcomdlg32 -ladvapi32
CMakeFiles/DevILTest.dir/winmain.cpp.obj:winmain.cpp:(.text+0xcc8): undefined reference to `_imp__ilOriginFunc@4'
CMakeFiles/DevILTest.dir/winmain.cpp.obj:winmain.cpp:(.text+0xce0): undefined reference to `_imp__ilEnable@4'
CMakeFiles/DevILTest.dir/winmain.cpp.obj:winmain.cpp:(.text+0xcf9): undefined reference to `_imp__ilSetInteger@8'
如果我删除 dll 文件并运行 cmake 脚本,则 DevIL.lib 库已正确本地化,并且不会出现链接器故障:
-- Detected OpenGL path is : glu32;opengl32
-- Found DevIL includes at: C:/mingw/include/IL
-- Found DevIL library at: C:/mingw/lib/DevIL.lib
但是,在这种情况下,应用程序在启动时崩溃而缺少 dll 文件。如果我现在将它们添加回 mingw 或应用程序根应用程序运行,但在本地化 dll 文件而不是 .lib 时在 cmake 执行时再次失败...
有谁知道我该如何解决这个问题?对于任何提示,我将不胜感激。最好的问候,克里斯蒂安