Initial commit as Claude developed it

external/CMakeLists.txt

@@ -0,0 +1,60 @@
+# External dependencies CMakeLists.txt
+
+include(FetchContent)
+
+# Fetch libsvm
+FetchContent_Declare(
+    libsvm
+    GIT_REPOSITORY https://github.com/cjlin1/libsvm.git
+    GIT_TAG v332
+)
+FetchContent_MakeAvailable(libsvm)
+
+# Fetch liblinear
+FetchContent_Declare(
+    liblinear
+    GIT_REPOSITORY https://github.com/cjlin1/liblinear.git
+    GIT_TAG v249
+)
+FetchContent_MakeAvailable(liblinear)
+
+# Build libsvm as static library
+set(LIBSVM_SOURCES
+    ${libsvm_SOURCE_DIR}/svm.cpp
+)
+
+add_library(libsvm_static STATIC ${LIBSVM_SOURCES})
+target_include_directories(libsvm_static PUBLIC ${libsvm_SOURCE_DIR})
+target_compile_definitions(libsvm_static PRIVATE -DLIBSVM_VERSION=332)
+
+# Build liblinear as static library
+set(LIBLINEAR_SOURCES
+    ${liblinear_SOURCE_DIR}/linear.cpp
+    ${liblinear_SOURCE_DIR}/tron.cpp
+    ${liblinear_SOURCE_DIR}/blas/daxpy.c
+    ${liblinear_SOURCE_DIR}/blas/ddot.c
+    ${liblinear_SOURCE_DIR}/blas/dnrm2.c
+    ${liblinear_SOURCE_DIR}/blas/dscal.c
+)
+
+add_library(liblinear_static STATIC ${LIBLINEAR_SOURCES})
+target_include_directories(liblinear_static 
+    PUBLIC 
+        ${liblinear_SOURCE_DIR}
+        ${liblinear_SOURCE_DIR}/blas
+)
+target_compile_definitions(liblinear_static PRIVATE -DLIBLINEAR_VERSION=249)
+
+# Set C++ standard for the libraries
+set_property(TARGET libsvm_static PROPERTY CXX_STANDARD 17)
+set_property(TARGET liblinear_static PROPERTY CXX_STANDARD 17)
+
+# Handle platform-specific compilation
+if(WIN32)
+    target_compile_definitions(libsvm_static PRIVATE -D_CRT_SECURE_NO_WARNINGS)
+    target_compile_definitions(liblinear_static PRIVATE -D_CRT_SECURE_NO_WARNINGS)
+endif()
+
+# Export the source directories for use in main project
+set(LIBSVM_INCLUDE_DIR ${libsvm_SOURCE_DIR} PARENT_SCOPE)
+set(LIBLINEAR_INCLUDE_DIR ${liblinear_SOURCE_DIR} PARENT_SCOPE)