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projectM-visualizer / frontend-sdl2

Standalone application based on SDL2 that turns your desktop audio into awesome visuals. Available on most platforms supported by both libprojectM and libSDL2.
GNU General Public License v3.0
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Building on Windows fails, cmake cannot find PCRE #26

Closed benj02 closed 2 years ago

benj02 commented 2 years ago

I have build libprojectM and am now trying to build this project, but I'm running into this error:

C:\home\SoundBetter\frontend-sdl2\build>cmake -G "Visual Studio 16 2019" -A "X64" -DCMAKE_TOOLCHAIN_FILE="C:\home\vcpkg\scripts\buildsystems\vcpkg.cmake" -DCMAKE_PREFIX_PATH="C:\home\SoundBetter\projectm\build\src\libprojectM\libprojectM" -CMAKE_INCLUDE_PATH="C:\home\vcpkg\buildtrees\pcre\x64-windows-rel" -CMAKE_LIBRARY_PATH="C:\home\vcpkg\installed\x64-windows\lib" ..
loading initial cache file MAKE_INCLUDE_PATH=C:\home\vcpkg\buildtrees\pcre\x64-windows-rel
CMake Error: Error processing file: C:/home/SoundBetter/frontend-sdl2/build/MAKE_INCLUDE_PATH=C:/home/vcpkg/buildtrees/pcre/x64-windows-rel
loading initial cache file MAKE_LIBRARY_PATH=C:\home\vcpkg\installed\x64-windows\lib
CMake Error: Error processing file: C:/home/SoundBetter/frontend-sdl2/build/MAKE_LIBRARY_PATH=C:/home/vcpkg/installed/x64-windows/lib
-- Selecting Windows SDK version 10.0.19041.0 to target Windows 10.0.19043.
CMake Error at C:/home/SoundBetter/projectm/build/src/libprojectM/libprojectM/libprojectMConfig.cmake:39 (include):
  include could not find load file:

    C:/home/SoundBetter/projectm/build/src/libprojectM/libprojectM/libprojectMTargets.cmake
Call Stack (most recent call first):
  C:/home/vcpkg/scripts/buildsystems/vcpkg.cmake:555 (_find_package)
  CMakeLists.txt:37 (find_package)

CMake Error at C:/home/vcpkg/scripts/buildsystems/vcpkg.cmake:555 (_find_package):
  By not providing "FindPCRE.cmake" in CMAKE_MODULE_PATH this project has
  asked CMake to find a package configuration file provided by "PCRE", but
  CMake did not find one.

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

    PCREConfig.cmake
    pcre-config.cmake

  Add the installation prefix of "PCRE" to CMAKE_PREFIX_PATH or set
  "PCRE_DIR" to a directory containing one of the above files.  If "PCRE"
  provides a separate development package or SDK, be sure it has been
  installed.
Call Stack (most recent call first):
  C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/Common7/IDE/CommonExtensions/Microsoft/CMake/CMake/share/cmake-3.19/Modules/CMakeFindDependencyMacro.cmake:47 (find_package)
  C:/home/vcpkg/installed/x64-windows/share/poco/PocoFoundationConfig.cmake:5 (find_dependency)
  C:/home/vcpkg/scripts/buildsystems/vcpkg.cmake:555 (_find_package)
  C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/Common7/IDE/CommonExtensions/Microsoft/CMake/CMake/share/cmake-3.19/Modules/CMakeFindDependencyMacro.cmake:47 (find_package)
  C:/home/vcpkg/installed/x64-windows/share/poco/PocoUtilConfig.cmake:2 (find_dependency)
  C:/home/vcpkg/scripts/buildsystems/vcpkg.cmake:555 (_find_package)
  C:/home/vcpkg/installed/x64-windows/share/poco/PocoConfig.cmake:36 (find_package)
  C:/home/vcpkg/scripts/buildsystems/vcpkg.cmake:555 (_find_package)
  CMakeLists.txt:39 (find_package)

-- Configuring incomplete, errors occurred!
See also "C:/home/SoundBetter/frontend-sdl2/build/CMakeFiles/CMakeOutput.log".
See also "C:/home/SoundBetter/frontend-sdl2/build/CMakeFiles/CMakeError.log".

I have installed pcre and pcre2 through vcpkg. The files C:\home\vcpkg\installed\x64-windows\lib\pcre.lib and C:\home\vcpkg\installed\x64-windows\include\pcre.h both exist. Somehow CMake cannot find them.

kblaschke commented 2 years ago

Please check if your vcpkg triplet is set properly between all builds and package installs (e.g. x64-windows or x64-windows-static). If that's the case, POCO builds file in vcpkg, but downstream projects can't find it, it's a vcpkg bug - not much we can do about that. I'd then recommend creating a minimal CMake test project that exposes this issue and open a bug report in the vcpkg issue tracker. From my experience, they're quite fast at solving issues if you provide good information.

Here's a minimal CMakeLists.txt that you could use to test, just drop it anywhere and configure the build using the vcpkg toolchain file:

cmake_minimum_required(VERSION 3.15)
project(vcpkg_test)

find_package(Poco REQUIRED COMPONENTS Foundation)
file(WRITE ${CMAKE_CURRENT_LIST_DIR}/main.cpp "int main() { return 0; }")
add_executable(vcpkg-test main.cpp)
target_link_libraries(vcpkg-test PUBLIC Poco::Foundation)