Can't compile in Centos7 environment #645
Comments
|
in addition, my envirnoment is： |
|
The simplest if you're using cmake is to add pqxx as a subdirectory: And then use |
but i already write it: |
|
But you also have a load of other things. You only need the |
|
this time，i simplify my CMakeLists.txt except things for importing workflow cmake_minimum_required (VERSION 3.8)
project ("CMPlatformServer" LANGUAGES CXX)
MESSAGE(STATUS "Project Directory: ${PROJECT_SOURCE_DIR}")
include_directories(
${PROJECT_SOURCE_DIR}/src
${PROJECT_SOURCE_DIR}/src/server
${PROJECT_SOURCE_DIR}/third/workflow/_include/
)
file(GLOB_RECURSE CODE_SRC "${PROJECT_SOURCE_DIR}/src/*.h"
"${PROJECT_SOURCE_DIR}/src/*.cpp"
"${PROJECT_SOURCE_DIR}/src/server/*.h"
"${PROJECT_SOURCE_DIR}/src/server/*.cpp")
add_subdirectory(${PROJECT_SOURCE_DIR}/third/workflow)
add_subdirectory(${PROJECT_SOURCE_DIR}/third/libpqxx)
add_executable (CMPlatformServer ${CODE_SRC})
target_link_libraries(CMPlatformServer
PRIVATE workflow-static pqxx pthread ssl crypto
)But it still reports errors |
|
The error is reported because the PostgreSQL library installed on the machine is missing. libpqxx depends on the PostgreSQL library, so PostgreSQL must be installed on your machine. |
I search for my PostgreSQL and find it: in my linux environment, in /usr directory： |
|
You'll also need the development packages. Depending on the distribution they can have different names. Maybe something like |
|
Note also that CMake automatically detects PostgreSQL libraries only for PostgreSQL versions that have been released at the time CMake is released. See also: #624 (comment) |
thank you very much, i have solved this problem by adding "set(PostgreSQL_ROOT "/usr/pgsql-14")" it seems like cmake don't find target pqxx |
The error makes it look like it's not understanding that |
yes, i add it in target_link_libraries:
|
this is my CMakeLists.txt cmake_minimum_required (VERSION 3.8)
project ("CMPlatformServer" LANGUAGES CXX)
set(CMAKE_CXX_FLAGS "-D_GLIBCXX_USE_CXX11_ABI=0 -g -Werror=return-type")
add_definitions(-std=c++11)
MESSAGE(STATUS "Project Directory: ${PROJECT_SOURCE_DIR}")
set(PostgreSQL_ROOT "/usr/pgsql-14")
link_directories()
include_directories(
${PROJECT_SOURCE_DIR}/src
${PROJECT_SOURCE_DIR}/src/server
${PROJECT_SOURCE_DIR}/third/workflow/_include/
${PROJECT_SOURCE_DIR}/third/libpqxx/include/
)
file(GLOB_RECURSE CODE_SRC "${PROJECT_SOURCE_DIR}/src/*.h"
"${PROJECT_SOURCE_DIR}/src/*.cpp"
"${PROJECT_SOURCE_DIR}/src/server/*.h"
"${PROJECT_SOURCE_DIR}/src/server/*.cpp")
add_subdirectory(${PROJECT_SOURCE_DIR}/third/workflow)
add_subdirectory(${PROJECT_SOURCE_DIR}/third/libpqxx)
add_executable (CMPlatformServer ${CODE_SRC})
target_link_libraries(CMPlatformServer
PRIVATE workflow-static pqxx pthread ssl crypto
) |
in build/third/libpqxx/CMakeFiles directory, it doesn't create a .so or .a lib file
|
|
I have a question about importing thirdpart library. for example, in my this project: cd third/libpqxx
mkdir build
cd build
cmake ..
makethen i build my whole project i have this idea because i import thirdpart lib which don't be built yet, so it don't have .a or .so lib file, how can cmake link target with static library or dynamic library ? |
If third-party libraries are imported with You need to remove the CMake build directory once, because CMake generates a cache of variables in the build directory, and the old cache causes the |
|
i understand what you said but i notice that it does't build pqxx target before link CMPlatformServer target; but another thirdpart target called workflow has built successfully cmake_minimum_required (VERSION 3.8)
project ("CMPlatformServer" LANGUAGES CXX)
add_definitions(-std=c++11)
MESSAGE(STATUS "Project Directory: ${PROJECT_SOURCE_DIR}")
set(PostgreSQL_ROOT "/usr/pgsql-14")
include_directories(
${PROJECT_SOURCE_DIR}/src
${PROJECT_SOURCE_DIR}/src/server
${PROJECT_SOURCE_DIR}/third/workflow/_include/
${PROJECT_SOURCE_DIR}/third/libpqxx/include/
)
file(GLOB_RECURSE CODE_SRC "${PROJECT_SOURCE_DIR}/src/*.h"
"${PROJECT_SOURCE_DIR}/src/*.cpp"
"${PROJECT_SOURCE_DIR}/src/server/*.h"
"${PROJECT_SOURCE_DIR}/src/server/*.cpp")
add_subdirectory(${PROJECT_SOURCE_DIR}/third/workflow)
add_subdirectory(${PROJECT_SOURCE_DIR}/third/libpqxx)
add_executable (CMPlatformServer ${CODE_SRC})
target_link_libraries(CMPlatformServer
PRIVATE workflow-static pthread ssl crypto
PRIVATE pqxx
) |
|
You can see in the build output that it isn't building pqxx. Maybe the extra |
I turn to version7.6 and switch c++ compile version to C++17. and finally success! 🎉🎉 thank you so much to help me solve problems 😘😘 |
I am not a native specker, Please forgive me。
I want to add libpqxx as a third part dependence by CMake。but when i use "cmake .." to compile, there are something wrong like this:
here is my project structure:
and here is my CMakeLists.txt:
how can i currently import libpqxx by CMake?
The text was updated successfully, but these errors were encountered: