build: introduce cmake option LLAMA_CURL to trigger libcurl linking to be coherent with the make toolchain

.github/workflows/server.yml

@@ -68,6 +68,7 @@ jobs:
           cmake .. \
               -DLLAMA_NATIVE=OFF \
               -DLLAMA_BUILD_SERVER=ON \
+              -DLLAMA_CURL=ON \
               -DCMAKE_BUILD_TYPE=${{ matrix.build_type }} \
               -DLLAMA_SANITIZE_${{ matrix.sanitizer }}=ON ;
           cmake --build . --config ${{ matrix.build_type }} -j $(nproc) --target server
@@ -126,7 +127,7 @@ jobs:
         run: |
           mkdir build
           cd build
-          cmake .. -DCURL_LIBRARY="${env:RUNNER_TEMP}/libcurl/lib/Release/libcurl_imp.lib" -DCURL_INCLUDE_DIR="${env:RUNNER_TEMP}/libcurl/include" -DLLAMA_BUILD_SERVER=ON -DCMAKE_BUILD_TYPE=Release
+          cmake .. -DLLAMA_CURL=ON -DCURL_LIBRARY="${env:RUNNER_TEMP}/libcurl/lib/Release/libcurl_imp.lib" -DCURL_INCLUDE_DIR="${env:RUNNER_TEMP}/libcurl/include" -DLLAMA_BUILD_SERVER=ON -DCMAKE_BUILD_TYPE=Release
           cmake --build . --config Release -j ${env:NUMBER_OF_PROCESSORS} --target server
 
       - name: Python setup

CMakeLists.txt

@@ -99,6 +99,7 @@ option(LLAMA_CUDA_F16                        "llama: use 16 bit floats for some
 set(LLAMA_CUDA_KQUANTS_ITER "2" CACHE STRING "llama: iters./thread per block for Q2_K/Q6_K")
 set(LLAMA_CUDA_PEER_MAX_BATCH_SIZE "128" CACHE STRING
                                              "llama: max. batch size for using peer access")
+option(LLAMA_CURL                            "llama: use libcurl to download model from an URL" OFF)
 option(LLAMA_HIPBLAS                         "llama: use hipBLAS"                               OFF)
 option(LLAMA_HIP_UMA                         "llama: use HIP unified memory architecture"       OFF)
 option(LLAMA_CLBLAST                         "llama: use CLBlast"                               OFF)

common/CMakeLists.txt

@@ -47,14 +47,13 @@ if (BUILD_SHARED_LIBS)
     set_target_properties(${TARGET} PROPERTIES POSITION_INDEPENDENT_CODE ON)
 endif()
 
+
 # Check for curl
-find_package(CURL QUIET)
-if (CURL_FOUND)
+if (LLAMA_CURL)
+    find_package(CURL)
     add_definitions(-DLLAMA_USE_CURL)
     include_directories(${CURL_INCLUDE_DIRS})
     link_libraries(${CURL_LIBRARIES})
-else()
-    message(INFO " libcurl not found. Building without model download support.")
 endif ()