Add Fortran LLDB development configuration

- Create configure-lldb-fortran.sh script for optimal build setup
- Add LLDBConfigFortran.cmake module for Fortran-specific configuration
- Integrate Fortran configuration into main LLDB CMake build
- Update BACKLOG.md to reflect completed task

This establishes the foundation for efficient LLDB Fortran development
with minimal build times and proper test infrastructure support.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: krystophny

BACKLOG.md

@@ -5,7 +5,7 @@
 **Goal**: Establish efficient development and testing environment
 
 ### Story 1.1: Minimal Build Configuration
-- [ ] Create optimal CMake configuration for Fortran LLDB development
+- [x] Create optimal CMake configuration for Fortran LLDB development
 - [ ] Document build time and disk space requirements
 - [ ] Verify build works with both Debug and Release configurations
 - [ ] Test with different generators (Ninja, Make)

configure-lldb-fortran.sh

@@ -0,0 +1,28 @@
+#!/bin/bash
+# Optimal build configuration for LLDB Fortran development
+# This script creates a minimal build with only necessary components
+
+BUILD_DIR="${1:-build-fortran}"
+BUILD_TYPE="${2:-RelWithDebInfo}"
+
+echo "Configuring LLVM/LLDB for Fortran development..."
+echo "Build directory: $BUILD_DIR"
+echo "Build type: $BUILD_TYPE"
+
+cmake -S llvm -B "$BUILD_DIR" -G Ninja \
+  -DLLVM_ENABLE_PROJECTS="clang;lldb;flang" \
+  -DLLVM_TARGETS_TO_BUILD="X86" \
+  -DCMAKE_BUILD_TYPE="$BUILD_TYPE" \
+  -DLLVM_ENABLE_ASSERTIONS=ON \
+  -DLLDB_INCLUDE_TESTS=ON \
+  -DLLVM_INSTALL_UTILS=ON \
+  -DLLVM_USE_LINKER=lld \
+  -DLLVM_PARALLEL_LINK_JOBS=2 \
+  -DLLVM_PARALLEL_COMPILE_JOBS=6 \
+  -DLLDB_TEST_FORTRAN=ON \
+  -DCMAKE_EXPORT_COMPILE_COMMANDS=ON
+
+echo "Configuration complete. To build:"
+echo "  ninja -C $BUILD_DIR lldb lldb-test"
+echo "To run Fortran tests:"
+echo "  ninja -C $BUILD_DIR check-lldb-lang-fortran"

lldb/CMakeLists.txt

@@ -38,6 +38,7 @@ endif()
 include(LLDBConfig)
 include(AddLLDB)
 include(LLDBLayeringCheck)
+include(LLDBConfigFortran)
 
 set(LLDB_INCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/include)
 

lldb/cmake/modules/LLDBConfigFortran.cmake

@@ -0,0 +1,56 @@
+# LLDB Fortran Support Configuration
+# This module handles configuration specific to Fortran language support in LLDB
+
+# Option to enable Fortran support testing
+option(LLDB_TEST_FORTRAN "Enable Fortran language tests" ON)
+
+# Find Fortran compiler for testing
+if(LLDB_TEST_FORTRAN)
+  include(CheckLanguage)
+  check_language(Fortran)
+  
+  if(CMAKE_Fortran_COMPILER)
+    enable_language(Fortran)
+    message(STATUS "Found Fortran compiler: ${CMAKE_Fortran_COMPILER}")
+    
+    # Check if it's gfortran or flang
+    execute_process(
+      COMMAND ${CMAKE_Fortran_COMPILER} --version
+      OUTPUT_VARIABLE FORTRAN_COMPILER_VERSION
+      ERROR_QUIET
+    )
+    
+    if(FORTRAN_COMPILER_VERSION MATCHES "GNU Fortran")
+      set(LLDB_TEST_FORTRAN_COMPILER "gfortran")
+    elseif(FORTRAN_COMPILER_VERSION MATCHES "flang")
+      set(LLDB_TEST_FORTRAN_COMPILER "flang")
+    else()
+      set(LLDB_TEST_FORTRAN_COMPILER "unknown")
+    endif()
+    
+    message(STATUS "Fortran compiler type: ${LLDB_TEST_FORTRAN_COMPILER}")
+  else()
+    message(WARNING "No Fortran compiler found. Fortran tests will be disabled.")
+    set(LLDB_TEST_FORTRAN OFF)
+  endif()
+endif()
+
+# Export variables for use in test configuration
+set(LLDB_TEST_FORTRAN ${LLDB_TEST_FORTRAN} PARENT_SCOPE)
+set(LLDB_TEST_FORTRAN_COMPILER ${LLDB_TEST_FORTRAN_COMPILER} PARENT_SCOPE)
+
+# Add Fortran test directory if enabled
+if(LLDB_TEST_FORTRAN)
+  list(APPEND LLDB_TEST_DEPS lldb-test)
+  
+  # Add custom target for Fortran tests only
+  add_custom_target(check-lldb-lang-fortran
+    COMMAND ${CMAKE_COMMAND} -E echo "Running LLDB Fortran language tests..."
+    COMMAND ${Python3_EXECUTABLE} ${LLVM_MAIN_SRC_DIR}/llvm/utils/lit/lit.py
+      --param lldb_site_config=${CMAKE_CURRENT_BINARY_DIR}/test/lit.site.cfg.py
+      ${CMAKE_CURRENT_SOURCE_DIR}/test/API/lang/fortran/
+    DEPENDS ${LLDB_TEST_DEPS}
+    COMMENT "Running LLDB Fortran language tests"
+    USES_TERMINAL
+  )
+endif()