can't link libpqxx on linux ubuntu

[pahan76]

Package: libpqxx:x64-linux Vcpkg version: 2018.11.23-unknownhash

pavels@crab:~/dev/cpp/test/release$ ../../cmake .. -DCMAKE_TOOLCHAIN_FILE=/home/pavels/dev/cpp/vcpkg/scripts/buildsystems/vcpkg.cmake
-- The C compiler identification is GNU 7.3.0
-- The CXX compiler identification is GNU 7.3.0
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Current source dir /home/pavels/dev/cpp/test
-- set project test
CMake Warning at /home/pavels/dev/cpp/vcpkg/scripts/buildsystems/vcpkg.cmake:234 (_find_package):
  By not providing "Findlibpqxx.cmake" in CMAKE_MODULE_PATH this project has
  asked CMake to find a package configuration file provided by "libpqxx", but
  CMake did not find one.

  Could not find a package configuration file provided by "libpqxx" with any
  of the following names:

    libpqxxConfig.cmake
    libpqxx-config.cmake

  Add the installation prefix of "libpqxx" to CMAKE_PREFIX_PATH or set
  "libpqxx_DIR" to a directory containing one of the above files.  If
  "libpqxx" provides a separate development package or SDK, be sure it has
  been installed.
Call Stack (most recent call first):
  src/CMakeLists.txt:12 (find_package)

-- Configuring done
-- Generating done
-- Build files have been written to: /home/pavels/dev/cpp/test/release

Output errors:

pavels@crab:~/dev/cpp/test/release$ ../../cmake --build .
/home/pavels/cmake/cmake-3.14.3-Linux-x86_64/bin/cmake -S/home/pavels/dev/cpp/test -B/home/pavels/dev/cpp/test/release --check-build-system CMakeFiles/Makefile.cmak                                           e 0
/home/pavels/cmake/cmake-3.14.3-Linux-x86_64/bin/cmake -E cmake_progress_start /home/pavels/dev/cpp/test/release/CMakeFiles /home/pavels/dev/cpp/test/release/CMakeF                                           iles/progress.marks
/usr/bin/make -f CMakeFiles/Makefile2 all
make[1]: Entering directory '/home/pavels/dev/cpp/test/release'
/usr/bin/make -f src/CMakeFiles/test.dir/build.make src/CMakeFiles/test.dir/depend
make[2]: Entering directory '/home/pavels/dev/cpp/test/release'
cd /home/pavels/dev/cpp/test/release && /home/pavels/cmake/cmake-3.14.3-Linux-x86_64/bin/cmake -E cmake_depends "Unix Makefiles" /home/pavels/dev/cpp/test /home/pav                                           els/dev/cpp/test/src /home/pavels/dev/cpp/test/release /home/pavels/dev/cpp/test/release/src /home/pavels/dev/cpp/test/release/src/CMakeFiles/test.dir/DependInfo.cm                                           ake --color=
Scanning dependencies of target test
make[2]: Leaving directory '/home/pavels/dev/cpp/test/release'
/usr/bin/make -f src/CMakeFiles/test.dir/build.make src/CMakeFiles/test.dir/build
make[2]: Entering directory '/home/pavels/dev/cpp/test/release'
[ 50%] Building CXX object src/CMakeFiles/test.dir/test.cpp.o
cd /home/pavels/dev/cpp/test/release/src && /usr/bin/c++   -I/home/pavels/dev/cpp/test/src  -std=gnu++1z -o CMakeFiles/test.dir/test.cpp.o -c /home/pavels/dev/cpp/t                                           est/src/test.cpp
[100%] Linking CXX executable test
cd /home/pavels/dev/cpp/test/release/src && /home/pavels/cmake/cmake-3.14.3-Linux-x86_64/bin/cmake -E cmake_link_script CMakeFiles/test.dir/link.txt --verbose=1
/usr/bin/c++    -rdynamic CMakeFiles/test.dir/test.cpp.o  -o test -llibpqxx
/usr/bin/ld: cannot find -llibpqxx
collect2: error: ld returned 1 exit status
src/CMakeFiles/test.dir/build.make:86: recipe for target 'src/test' failed
make[2]: *** [src/test] Error 1
make[2]: Leaving directory '/home/pavels/dev/cpp/test/release'
CMakeFiles/Makefile2:93: recipe for target 'src/CMakeFiles/test.dir/all' failed
make[1]: *** [src/CMakeFiles/test.dir/all] Error 2
make[1]: Leaving directory '/home/pavels/dev/cpp/test/release'
Makefile:86: recipe for target 'all' failed
make: *** [all] Error 2

./CMakeLists.txt

cmake_minimum_required(VERSION 3.12)
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_VERBOSE_MAKEFILE ON)

############ Project name and version
set (TEST_MAJOR_VERSION 1)
set (TEST_MINOR_VERSION 0)
set (TEST_PATCH_VERSION 0)
set (TEST_VERSION ${TEST_MAJOR_VERSION}.${TEST_MINOR_VERSION}.${TEST_PATCH_VERSION})

# Include our cmake macros
set (CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_CURRENT_SOURCE_DIR}/cmake)
message (STATUS "Current source dir " ${CMAKE_CURRENT_SOURCE_DIR})
include (CMakeHelpers)

add_subdirectory (src)

src/CMakeLists.txt

init_target (test)
message (STATUS "set project " ${TARGET_NAME})
project (${TARGET_NAME} VERSION ${TEST_VERSION})

file (GLOB SOURCE_FILES
        *.cpp
        )
file (GLOB HEADER_FILES
        *.h
        )

find_package(libpqxx)

add_executable(${TARGET_NAME} ${SOURCE_FILES} ${HEADER_FILES})
target_link_libraries(test PRIVATE libpqxx)

Why package not found? How to link it well?

[gnaggnoyil]

Same issue here. The find package configuratuion file of libpqxx seems not to be installed by vcpkg while other libraries like protobuf does not have such issue.

[flj]

I have the same issue [though on alpine]

[LilyWangL]

Hi @pahan76, you should use find_library to find libpqxx. This is my CMakeLists.txt:

cmake_minimum_required (VERSION 3.9)

project (testpqxx C)

add_executable(testpqxx main.c)

find_path(LIBPQXX_INCLUDE_DIR pqxx)
find_library(LIBPQXX_LIBRARY liblibpqxx_static.a)
include_directories(${LIBPQXX_INCLUDE_DIR})
target_link_libraries(testpqxx PUBLIC ${LIBPQXX_LIBRARY})

[LilyWangL]

Thanks for posting this issue. Please reopen this issue if it still be a problem for you.

[gnaggnoyil]

@LilyWangL I'm sorry, but I don't think it is a common practice to use find_path and find_library directly instead of using a find_package configuration file to find libpqxx, nor it follows upstream's intention. Please reopen this issue and keep it open until a find_package configuration file can be installed though VcPkg.