cmake添加位于项目文件夹中的外部库
序言：我在Windows上，希望轻松将此项目发送给其他OS上的其他人。
我的文件夹结构是：
EigenTest/
libs/
├─ Eigen3/
├─ OpenBLAS C Asm/
src/
├─ main.cpp
我的cmake文件：
cmake_minimum_required(VERSION 3.22)
project(EigenTest)
set(CMAKE_CXX_STANDARD 20)
add_executable(EigenTest src/main.cpp)
add_library(EigenLib STATIC)
target_include_directories(EigenLib INTERFACE "libs/Eigen3")
target_link_libraries(EigenTest PRIVATE EigenLib)
add_library(OpenBlasLib STATIC)
target_include_directories(OpenBlasLib PRIVATE "libs/OpenBLAS C ASM")
target_link_libraries(EigenTest PRIVATE OpenBlasLib)
出于某种原因，当eigen3和openblas都有自己的cmakelist.txt和这些文件夹中的源文件时，我遇到了一个错误。 错误：
CMake Error at CMakeLists.txt:8 (add_library):
No SOURCES given to target: EigenLib
CMake Error at CMakeLists.txt:14 (add_library):
No SOURCES given to target: OpenBlasLib
Preface: I am on Windows and wish to easily send this project to someone else on a different OS.
My folder structure is:
EigenTest/
libs/
├─ Eigen3/
├─ OpenBLAS C Asm/
src/
├─ main.cpp
My cmake file:
cmake_minimum_required(VERSION 3.22)
project(EigenTest)
set(CMAKE_CXX_STANDARD 20)
add_executable(EigenTest src/main.cpp)
add_library(EigenLib STATIC)
target_include_directories(EigenLib INTERFACE "libs/Eigen3")
target_link_libraries(EigenTest PRIVATE EigenLib)
add_library(OpenBlasLib STATIC)
target_include_directories(OpenBlasLib PRIVATE "libs/OpenBLAS C ASM")
target_link_libraries(EigenTest PRIVATE OpenBlasLib)
For some reason, I get an error that there are no sources when both Eigen3 and OpenBLAS have their own CmakeList.txt and source files in those folders.
Error:
CMake Error at CMakeLists.txt:8 (add_library):
No SOURCES given to target: EigenLib
CMake Error at CMakeLists.txt:14 (add_library):
No SOURCES given to target: OpenBlasLib
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