1. 安裝protobuf
鏈接:
- https://blog.csdn.net/u010918487/article/details/82947157
- https://blog.csdn.net/kdchxue/article/details/81046192
2. 編譯ncnn
$ cd <ncnn-root-dir>
$ mkdir -p build
$ cd build
# cmake option NCNN_VULKAN for enabling vulkan
$ cmake -DNCNN_VULKAN=OFF ..
$ make -j4
$ make install
報錯
In file included from /usr/local/include/google/protobuf/arena.h:48:0,
from /usr/local/include/google/protobuf/message.h:118,
from /usr/local/include/google/protobuf/text_format.h:48,
from /home/yangna/chenjun/ncnn/ncnn-20180704/tools/caffe/caffe2ncnn.cpp:26:
/usr/include/c++/5/typeinfo:39:37: error: expected ‘}’ before end of line
/usr/include/c++/5/typeinfo:39:37: error: expected unqualified-id before end of line
/usr/include/c++/5/typeinfo:39:37: error: expected ‘}’ before end of line
/usr/include/c++/5/typeinfo:39:37: error: expected ‘}’ before end of line
/usr/include/c++/5/typeinfo:39:37: error: expected ‘}’ before end of line
/usr/include/c++/5/typeinfo:39:37: error: expected declaration before end of line
tools/caffe/CMakeFiles/caffe2ncnn.dir/build.make:70: recipe for target 'tools/caffe/CMakeFiles/caffe2ncnn.dir/caffe2ncnn.cpp.o' failed
make[2]: *** [tools/caffe/CMakeFiles/caffe2ncnn.dir/caffe2ncnn.cpp.o] Error 1
CMakeFiles/Makefile2:203: recipe for target 'tools/caffe/CMakeFiles/caffe2ncnn.dir/all' failed
make[1]: *** [tools/caffe/CMakeFiles/caffe2ncnn.dir/all] Error 2
Makefile:127: recipe for target 'all' failed
make: *** [all] Error 2
解決方案:
- 在cmakelist.txt中加一句
add_definitions(-std=c++11)
- 參考https://www.jianshu.com/p/988499c72b5e,加一句:
set(CMAKE_CXX_FLAGS "-std=c++11")
結果
會在build
文件夾下有install/include
和install/lib
兩個文件夾,include是*.h頭文件;lib是動態鏈接庫。
3. 使用ncnn
- 這裏以cmakelist.txt爲例。需要在cmakelist.txt中包含
<ncnn project path>/build/install/include
的文件夾,引入libncnn.a庫文件。
cmakelist.txt的關鍵部分
1.
include_directories(/home/yangna/chenjun/ncnn/ncnn-20180704/build/install/include) # 包含頭文件
2.
# 項目中添加libncnn.a庫
add_library( libncnn STATIC IMPORTED )
set_target_properties(
libncnn
PROPERTIES IMPORTED_LOCATION
${DIR}/lib/libncnn.a
)
3. 鏈接
target_link_libraries(demo
libncnn
${OpenCV_LIBS}
)
- 這裏用centerface做測試。項目中已經有ncnn模型和相關代碼。只需要編譯通過就行。
- 修改cmakelist.txt,只需要修改一處
#1.cmake verson
cmake_minimum_required(VERSION 2.8)
# 設置變量
set (DIR /home/yangna/chenjun/ncnn/ncnn-20180704/build/install) # 只需要修改這一處
#2.project name
project(demo C CXX)
#opencv
find_package(OpenCV REQUIRED)
#3.set environment variable
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
#4. include
include_directories(${DIR}/include
${CMAKE_CURRENT_LIST_DIR}/cpp)
# ncnn lib
add_library( libncnn STATIC IMPORTED )
set_target_properties(
libncnn
PROPERTIES IMPORTED_LOCATION
${DIR}/lib/libncnn.a
)
# add OPENMP support
FIND_PACKAGE( OpenMP REQUIRED)
if(OPENMP_FOUND)
message("OPENMP FOUND")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${OpenMP_C_FLAGS}")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${OpenMP_EXE_LINKER_FLAGS}")
endif()
#6.source directory
file(GLOB TEST_SRC ${CMAKE_CURRENT_LIST_DIR}/cpp/*.cpp
${CMAKE_CURRENT_LIST_DIR}/demo.cpp)
set(TEST_COMPILE_CODE ${TEST_SRC})
add_executable(demo ${TEST_COMPILE_CODE})
target_link_libraries(demo
libncnn
${OpenCV_LIBS}
)
- 編譯項目
cd $project
makedir build
cmake ..
make
- 執行
./demo
- 結果