GMP library - Build succeeds, still cmake cannot find

[saurabheights]

Hi, I am new to vcpkg, so please bear with me. I am able to install gmp with mainfest, however upon running cmake, it says Findgmp.cmake not found. Since gmp uses autoconf, that could be the cause of the issue, but I am not sure how to pinpoint it.

I also checked vcpkg_installed\bin|lib|include and it has gmp.[dll|lib|h].

My vcpkg.json:-

{
  "name": "myproject",
  "version": "1.4.0",
  "dependencies": [
    "openssl",
    "gmp",
    "pthreads",
    "opencl",
    "curl"
  ]
}

Logs of install and build:-

PS C:\Users\khand\Downloads\wwmw\myproject-gpu-dev> ..\vcpkg\vcpkg.exe install --feature-flags=manifests --triplet "x64-windows"
Detecting compiler hash for triplet x64-windows...
The following packages will be built and installed:
    curl[core,non-http,schannel,ssl,sspi]:x64-windows -> 7.80.0
    gmp[core]:x64-windows -> 6.2.1#7
    opencl[core]:x64-windows -> 2.2#8
    openssl[core]:x64-windows -> 1.1.1l#4
    pthreads[core]:x64-windows -> 3.0.0#10
  * vcpkg-cmake-config[core]:x64-windows -> 2021-12-01
  * vs-yasm[core]:x64-windows -> 0.5.0#1
  * yasm-tool[core]:x64-windows -> 1.3.0
  * zlib[core]:x64-windows -> 1.2.11#13
Additional packages (*) will be modified to complete this operation.
Restored 10 packages from C:\Users\khand\AppData\Local\vcpkg\archives in 436.2 ms. Use --debug to see more details.
Starting package 1/10: zlib:x64-windows
Installing package zlib[core]:x64-windows...
Elapsed time for package zlib:x64-windows: 112.6 ms
Starting package 2/10: vcpkg-cmake-config:x64-windows
Installing package vcpkg-cmake-config[core]:x64-windows...
Elapsed time for package vcpkg-cmake-config:x64-windows: 20.33 ms
Starting package 3/10: vcpkg-cmake:x64-windows
Installing package vcpkg-cmake[core]:x64-windows...
Elapsed time for package vcpkg-cmake:x64-windows: 21.11 ms
Starting package 4/10: curl:x64-windows
Installing package curl[core,non-http,schannel,ssl,sspi]:x64-windows...
Elapsed time for package curl:x64-windows: 71.14 ms
Starting package 5/10: yasm-tool:x64-windows
Installing package yasm-tool[core]:x64-windows...
Elapsed time for package yasm-tool:x64-windows: 23.11 ms
Starting package 6/10: vs-yasm:x64-windows
Installing package vs-yasm[core]:x64-windows...
Elapsed time for package vs-yasm:x64-windows: 21.73 ms
Starting package 7/10: gmp:x64-windows
Installing package gmp[core]:x64-windows...
Elapsed time for package gmp:x64-windows: 39.22 ms
Starting package 8/10: opencl:x64-windows
Installing package opencl[core]:x64-windows...
Elapsed time for package opencl:x64-windows: 64.83 ms
Starting package 9/10: openssl:x64-windows
Installing package openssl[core]:x64-windows...
Elapsed time for package openssl:x64-windows: 292.3 ms
Starting package 10/10: pthreads:x64-windows
Installing package pthreads[core]:x64-windows...
Elapsed time for package pthreads:x64-windows: 52.67 ms

Total elapsed time: 3.932 s

The package curl provides CMake targets:

    find_package(CURL CONFIG REQUIRED)
    target_link_libraries(main PRIVATE CURL::libcurl)

The package opencl is compatible with built-in CMake targets via CMake v3.6 and prior syntax

    find_package(OpenCL REQUIRED)
    target_link_libraries(main PRIVATE ${OpenCL_LIBRARIES})
    target_include_directories(main PRIVATE ${OpenCL_INCLUDE_DIRS})

and the CMake v3.7 and beyond imported target syntax

    find_package(OpenCL REQUIRED)
    target_link_libraries(main PRIVATE OpenCL::OpenCL)

This package is only an OpenCL SDK. To actually run OpenCL code you also need to install an implementation.

    WINDOWS: implementations typically ship with the drivers of you CPU/GPU vendors.
    LINUX: implementations may be installed from your distro's repo or manually. There are too many to count.
    APPLE: consult your distribution vendor on the state of OpenCL support: https://support.apple.com/en-us/HT202823

The package openssl is compatible with built-in CMake targets:

    find_package(OpenSSL REQUIRED)
    target_link_libraries(main PRIVATE OpenSSL::SSL OpenSSL::Crypto)

PS C:\Users\khand\Downloads\wwmw\myproject-gpu-dev> cmake -B build -S . -DCMAKE_TOOLCHAIN_FILE=C:\Users\khand\Downloads\vcpkg\scripts\buildsystems\vcpkg.cmake
-- Running vcpkg install
Detecting compiler hash for triplet x64-windows...
All requested packages are currently installed.
Restored 0 packages from C:\Users\khand\AppData\Local\vcpkg\archives in 75.9 us. Use --debug to see more details.

Total elapsed time: 2.886 s

The package curl provides CMake targets:

    find_package(CURL CONFIG REQUIRED)
    target_link_libraries(main PRIVATE CURL::libcurl)

The package opencl is compatible with built-in CMake targets via CMake v3.6 and prior syntax

    find_package(OpenCL REQUIRED)
    target_link_libraries(main PRIVATE ${OpenCL_LIBRARIES})
    target_include_directories(main PRIVATE ${OpenCL_INCLUDE_DIRS})

and the CMake v3.7 and beyond imported target syntax

    find_package(OpenCL REQUIRED)
    target_link_libraries(main PRIVATE OpenCL::OpenCL)

This package is only an OpenCL SDK. To actually run OpenCL code you also need to install an implementation.

    WINDOWS: implementations typically ship with the drivers of you CPU/GPU vendors.
    LINUX: implementations may be installed from your distro's repo or manually. There are too many to count.
    APPLE: consult your distribution vendor on the state of OpenCL support: https://support.apple.com/en-us/HT202823

The package openssl is compatible with built-in CMake targets:

    find_package(OpenSSL REQUIRED)
    target_link_libraries(main PRIVATE OpenSSL::SSL OpenSSL::Crypto)

-- Running vcpkg install - done
-- Selecting Windows SDK version 10.0.19041.0 to target Windows 10.0.19042.
CMake Error at C:/Users/khand/Downloads/wwmw/vcpkg/scripts/buildsystems/vcpkg.cmake:788 (_find_package):
  By not providing "Findgmp.cmake" in CMAKE_MODULE_PATH this project has
  asked CMake to find a package configuration file provided by "gmp", but
  CMake did not find one.

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

    gmpConfig.cmake
    gmp-config.cmake

  Add the installation prefix of "gmp" to CMAKE_PREFIX_PATH or set "gmp_DIR"
  to a directory containing one of the above files.  If "gmp" provides a
  separate development package or SDK, be sure it has been installed.
Call Stack (most recent call first):
  CMakeLists.txt:21 (find_package)


-- Configuring incomplete, errors occurred!
See also "C:/Users/khand/Downloads/wwmw/myproject-gpu-dev/build/CMakeFiles/CMakeOutput.log".

[Osyotr]

For packages that don't provide cmake config you should manually search for includes and libraries.
https://github.com/microsoft/vcpkg/blob/master/docs/examples/installing-and-using-packages.md#handling-libraries-without-native-cmake-support

[saurabheights]

Thank you.

[dimpase]

There are many versions of FindGMP.cmake floating around, e.g. https://github.com/Macaulay2/M2/blob/stable/M2/cmake/FindGMP.cmake is known to do a good job