[soci] Fix usage

[dg0yt]

Fixes #34327 (comment).

CC @baziorek

Now (Edit: SOCI!)

soci provides CMake targets:

    find_package(SOCI CONFIG REQUIRED)
    # Using core (loading backends at runtime)
    target_link_libraries(main PRIVATE $<IF:$<TARGET_EXISTS:SOCI::soci_core>,SOCI::soci_core,SOCI::soci_core_static>)

This static build doesn't include any soci backend and may not be useful.

or e.g.

soci provides CMake targets:

    find_package(SOCI CONFIG REQUIRED)
    # Using core (loading backends at runtime)
    target_link_libraries(main PRIVATE $<IF:$<TARGET_EXISTS:SOCI::soci_core>,SOCI::soci_core,SOCI::soci_core_static>)

    # Using the mysql backend directly
    target_link_libraries(main PRIVATE $<IF:$<TARGET_EXISTS:SOCI::soci_mysql>,SOCI::soci_mysql,SOCI::soci_mysql_static>)

    # Using the sqlite3 backend directly
    target_link_libraries(main PRIVATE $<IF:$<TARGET_EXISTS:SOCI::soci_sqlite3>,SOCI::soci_sqlite3,SOCI::soci_sqlite3_static>)

[baziorek]

@dg0yt I think it is not working (not configuring with CMake). I tried commands:

     apt-get update && apt-get upgrade -y --no-install-recommends
     apt-get install g++ git cmake curl zip unzip tar ca-certificates make pkg-config --no-install-recommends  -y
    git clone https://github.com/dg0yt/vcpkg.git -b soci --depth=1
    ./vcpkg/bootstrap-vcpkg.sh
    ./vcpkg/vcpkg install 'soci[sqlite3]'
soci provides CMake targets:

    find_package(soci CONFIG REQUIRED)
    # Using core (loading backends at runtime)
    target_link_libraries(main PRIVATE $<IF:$<TARGET_EXISTS:SOCI::soci_core>,SOCI::soci_core,SOCI::soci_core_static>)

    # Using the sqlite3 backend directly
    target_link_libraries(main PRIVATE $<IF:$<TARGET_EXISTS:SOCI::soci_sqlite3>,SOCI::soci_sqlite3,SOCI::soci_sqlite3_static>)


    ./vcpkg/vcpkg integrate install
CMake projects should use: "-DCMAKE_TOOLCHAIN_FILE=/home/vcpkg/scripts/buildsystems/vcpkg.cmake"
   cmake . -DCMAKE_TOOLCHAIN_FILE=/home/vcpkg/scripts/buildsystems/vcpkg.cmake

And errors are like that:

cmake . -DCMAKE_TOOLCHAIN_FILE=/home/vcpkg/scripts/buildsystems/vcpkg.cmake
-- The CXX compiler identification is GNU 11.4.0
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
CMake Error at vcpkg/scripts/buildsystems/vcpkg.cmake:859 (_find_package):
  Could not find a package configuration file provided by "soci" with any of
  the following names:

    sociConfig.cmake
    soci-config.cmake

  Add the installation prefix of "soci" to CMAKE_PREFIX_PATH or set
  "soci_DIR" to a directory containing one of the above files.  If "soci"
  provides a separate development package or SDK, be sure it has been
  installed.
Call Stack (most recent call first):
  CMakeLists.txt:15 (find_package)


-- Configuring incomplete, errors occurred!
See also "/home/CMakeFiles/CMakeOutput.log".

my CMakeLists.txt:

cmake_minimum_required(VERSION 3.16)
project(Learning_VCPKG LANGUAGES CXX)

find_package(soci CONFIG REQUIRED)

add_executable(${PROJECT_NAME} main.cpp)

# Using core (loading backends at runtime)
target_link_libraries(${PROJECT_NAME} PRIVATE $<IF:$<TARGET_EXISTS:SOCI::soci_core>,SOCI::soci_core,SOCI::soci_core_static>)

# Using the sqlite3 backend directly
target_link_libraries(${PROJECT_NAME} PRIVATE $<IF:$<TARGET_EXISTS:SOCI::soci_sqlite3>,SOCI::soci_sqlite3,SOCI::soci_sqlite3_static>)

C++ file the same as here

[dg0yt]

Great testing and feedback 👍
I realized that we lost the proper case which is find_package(SOCI ...).

[baziorek]

After corrections in the commit: 6d398f3
it works with commands provided in my previous message (#34436 (comment)) and:

make && ./Learning_VCPKG

APPROVE from me:)

---

EDIT: Just to make sure I checked if sqlite3 is working with boost and it is also working, commands the same as above with difference:

./vcpkg/vcpkg install 'soci[sqlite3,boost]' --recurse

Code with boost from one of my previous posts (#34168 (comment)).
APPROVE v2:)

[BillyONeal]

@dg0yt Thanks for the fix!
@baziorek Thanks for the review and testing!