feat: full support for features and profiles

ci/meta_tests.sh

@@ -28,8 +28,8 @@ pushd metapackage_stdlib
 popd
 
 pushd metapackage_minpack
-"$fpm" build --verbose
-"$fpm" run --verbose
+"$fpm" build --verbose --flag " -Wno-external-argument-mismatch"
+"$fpm" run --verbose --flag " -Wno-external-argument-mismatch"
 popd
 
 pushd metapackage_mpi

ci/run_tests.sh

@@ -374,5 +374,9 @@ popd
 # Test custom build directory functionality 
 bash "../ci/test_custom_build_dir.sh" "$fpm" hello_world
 
+# Test FPM features functionality
+echo "=== Testing FPM Features Functionality ==="
+bash "../ci/test_features.sh" "$fpm"
+
 # Cleanup
 rm -rf ./*/build

ci/test_features.sh

@@ -0,0 +1,164 @@
+#!/usr/bin/env bash
+set -ex
+
+# Test script for FPM features functionality
+# Usage: ./test_features.sh [fpm_executable]
+# Note: This script should be run from the repo root or integrated into run_tests.sh
+
+if [ "$1" ]; then
+   fpm="$1"
+else
+   # Default to the fpm passed from run_tests.sh or system fpm
+   fpm="${fpm:-fpm}"
+fi
+
+echo "Testing FPM features functionality"
+
+echo "=== Testing features_demo package ==="
+
+# Test 1: Basic features - debug feature
+pushd "features_demo"
+echo "Test 1: Basic debug feature"
+rm -rf build
+"$fpm" run --features debug | tee output.txt
+grep -q "DEBUG mode enabled" output.txt || { echo "ERROR: DEBUG mode not enabled"; exit 1; }
+echo "✓ Debug feature works"
+
+# Test 2: Profile usage - development profile (includes debug)
+echo "Test 2: Development profile (debug feature)"  
+rm -rf build
+"$fpm" run --profile development --target features_demo | tee output.txt
+grep -q "DEBUG mode enabled" output.txt || { echo "ERROR: DEBUG mode not enabled in development profile"; exit 1; }
+echo "✓ Development profile works"
+
+# Test 3: Multiple features
+echo "Test 3: Multiple features (debug + openmp)"
+rm -rf build  
+"$fpm" run --features debug,openmp --target features_demo | tee output.txt
+grep -q "DEBUG mode enabled" output.txt || { echo "ERROR: DEBUG mode not enabled with multiple features"; exit 1; }
+grep -q "OpenMP support enabled" output.txt || { echo "ERROR: OpenMP not enabled with multiple features"; exit 1; }
+echo "✓ Multiple features work"
+
+# Test 4: Feature-specific executable (debug_demo only available with debug feature)
+echo "Test 4: Feature-specific executable"
+rm -rf build
+"$fpm" run --features debug --target debug_demo | tee output.txt
+grep -q "Debug Demo Program" output.txt || { echo "ERROR: Debug Demo Program not found"; exit 1; }
+grep -q "Debug mode: ON" output.txt || { echo "ERROR: Debug mode not ON in debug_demo"; exit 1; }
+echo "✓ Feature-specific executable works"
+
+# Test 5: Profile with multiple features - production profile (release + openmp)
+echo "Test 5: Production profile (release + openmp)"
+rm -rf build
+"$fpm" run --profile production --target features_demo | tee output.txt
+grep -q "RELEASE mode enabled" output.txt || { echo "ERROR: RELEASE mode not enabled in production profile"; exit 1; }
+grep -q "OpenMP support enabled" output.txt || { echo "ERROR: OpenMP not enabled in production profile"; exit 1; }
+# Should NOT have debug
+if grep -q "DEBUG mode enabled" output.txt; then
+    echo "ERROR: DEBUG mode should not be enabled in production profile"
+    exit 1
+fi
+echo "✓ Production profile works"
+
+# Test 6: No features - baseline behavior
+echo "Test 6: No features (baseline)"
+rm -rf build  
+"$fpm" run --target features_demo | tee output.txt
+# Should have neither DEBUG nor RELEASE without explicit features
+if grep -q "DEBUG mode enabled" output.txt; then
+    echo "ERROR: DEBUG mode should not be enabled in baseline"
+    exit 1
+fi
+if grep -q "RELEASE mode enabled" output.txt; then
+    echo "ERROR: RELEASE mode should not be enabled in baseline"
+    exit 1
+fi
+if ! grep -q "Features: NONE" output.txt && ! grep -q "Demo completed successfully" output.txt; then
+    echo "ERROR: Expected baseline features output not found"
+    exit 1
+fi
+echo "✓ Baseline (no features) works"
+
+# Test 7: Error handling - invalid feature
+echo "Test 7: Error handling for invalid feature"
+rm -rf build
+if ! "$fpm" run --features nonexistent --target features_demo > /dev/null 2>&1; then
+    echo "Correctly rejected invalid feature"
+else
+    echo "ERROR: Should reject invalid feature" && exit 1
+fi
+
+# Test 8: Error handling - invalid profile  
+echo "Test 8: Error handling for invalid profile"
+rm -rf build
+if ! "$fpm" run --profile nonexistent --target features_demo > /dev/null 2>&1; then
+    echo "Correctly rejected invalid profile"  
+else
+    echo "ERROR: Should reject invalid profile" && exit 1
+fi
+
+# Test 9: Features and profile mutual exclusion
+echo "Test 9: Features and profile mutual exclusion"
+rm -rf build
+if ! "$fpm" run --features debug --profile development --target features_demo > /dev/null 2>&1; then
+    echo "Correctly rejected features + profile combination"
+else
+    echo "ERROR: Should reject features + profile combination" && exit 1  
+fi
+
+# Cleanup
+rm -rf build output.txt build_list.txt
+popd
+
+echo "=== Testing features_with_dependency package ==="
+
+# Test dependency features
+pushd "features_with_dependency"
+
+# RE-ENABLE AFTER MERGING fpm WITH CPP PARSING PR
+# Test 10: No features - should show NONE for both local and dependency
+# echo "Test 10: Dependency package without features"
+rm -rf build
+#"$fpm" run | tee output.txt
+# grep -q "NONE - no local features active" output.txt || { echo "ERROR: Local features NONE message not found"; exit 1; }
+# grep -q "Features: NONE" output.txt || { echo "ERROR: Features NONE not found in dependency test"; exit 1; }
+# echo "✓ Dependency package baseline works"
+
+# Test 11: Debug dependency feature
+echo "Test 11: Debug dependency feature"
+rm -rf build
+"$fpm" run --features with_feat_debug | tee output.txt
+grep -q "WITH_DEBUG_DEPENDENCY" output.txt || { echo "ERROR: WITH_DEBUG_DEPENDENCY not found"; exit 1; }
+grep -q "DEBUG mode enabled" output.txt || { echo "ERROR: DEBUG mode not enabled in dependency test"; exit 1; }
+echo "✓ Debug dependency feature works"
+
+# Test 12: Release dependency feature
+echo "Test 12: Release dependency feature"
+rm -rf build
+"$fpm" run --features with_feat_release | tee output.txt
+grep -q "WITH_RELEASE_DEPENDENCY" output.txt || { echo "ERROR: WITH_RELEASE_DEPENDENCY not found"; exit 1; }
+grep -q "RELEASE mode enabled" output.txt || { echo "ERROR: RELEASE mode not enabled in dependency test"; exit 1; }
+echo "✓ Release dependency feature works"
+
+# Test 13: Multi dependency feature
+echo "Test 13: Multi dependency feature"
+rm -rf build
+"$fpm" run --features with_feat_multi | tee output.txt
+grep -q "WITH_MULTI_DEPENDENCY" output.txt || { echo "ERROR: WITH_MULTI_DEPENDENCY not found"; exit 1; }
+grep -q "DEBUG mode enabled" output.txt || { echo "ERROR: DEBUG mode not enabled in multi dependency test"; exit 1; }
+grep -q "MPI support enabled" output.txt || { echo "ERROR: MPI support not enabled in multi dependency test"; exit 1; }
+echo "✓ Multi dependency feature works"
+
+# Test 14: Profile with dependency features
+echo "Test 14: Debug dependency profile"
+rm -rf build
+"$fpm" run --profile debug_dep | tee output.txt
+grep -q "WITH_DEBUG_DEPENDENCY" output.txt || { echo "ERROR: WITH_DEBUG_DEPENDENCY not found in profile test"; exit 1; }
+grep -q "DEBUG mode enabled" output.txt || { echo "ERROR: DEBUG mode not enabled in dependency profile test"; exit 1; }
+echo "✓ Debug dependency profile works"
+
+# Cleanup
+rm -rf build output.txt
+popd
+
+echo "All FPM features tests passed!"

example_packages/features_demo/app/debug_demo.f90

@@ -0,0 +1,16 @@
+program debug_demo
+    use features_demo
+    implicit none
+
+    write(*,*) 'Debug Demo Program'
+    write(*,*) '=================='
+
+#ifdef DEBUG
+    write(*,*) 'Debug mode: ON'
+#else
+    write(*,*) 'Debug mode: OFF'
+#endif
+
+    call show_features()
+
+end program debug_demo

example_packages/features_demo/app/main.f90

@@ -0,0 +1,12 @@
+program main
+    use features_demo
+    implicit none
+
+    call show_features()
+
+    write(*,*) ''
+    write(*,*) get_build_info()
+    write(*,*) ''
+    write(*,*) 'Demo completed successfully!'
+
+end program main

example_packages/features_demo/fpm.toml

@@ -0,0 +1,35 @@
+name = "features_demo"
+version = "0.1.0" 
+license = "MIT"
+description = "Demo package for FPM features functionality"
+
+[[executable]]
+name = "features_demo"
+source-dir = "app"
+main = "main.f90"
+
+[features]
+# Base debug feature
+debug.flags = "-g"
+debug.preprocess.cpp.macros = "DEBUG"
+
+# Release feature  
+release.flags = "-O3"
+release.preprocess.cpp.macros = "RELEASE"
+
+# Compiler-specific features
+debug.gfortran.flags = "-Wall -fcheck=bounds"
+release.gfortran.flags = "-march=native"
+
+# Platform-specific features
+linux.preprocess.cpp.macros = "LINUX_BUILD"
+
+# Parallel features
+mpi.preprocess.cpp.macros = "USE_MPI"
+mpi.dependencies.mpi = "*"
+openmp.preprocess.cpp.macros = "USE_OPENMP"
+openmp.dependencies.openmp = "*"
+
+[profiles]
+development = ["debug"]
+production = ["release", "openmp"]

example_packages/features_demo/src/features_demo.f90

@@ -0,0 +1,78 @@
+module features_demo
+    implicit none
+    private
+    public :: show_features, get_build_info
+
+contains
+
+    !> Display which features are enabled
+    subroutine show_features()
+        write(*,*) 'FPM Features Demo'
+        write(*,*) '================='
+
+        ! Debug/Release flags
+#ifdef DEBUG
+        write(*,*) '✓ DEBUG mode enabled'
+#endif
+#ifdef RELEASE  
+        write(*,*) '✓ RELEASE mode enabled'
+#endif
+
+        ! Platform detection
+#ifdef LINUX_BUILD
+        write(*,*) '✓ Linux platform detected'
+#endif
+#ifdef WINDOWS_BUILD
+        write(*,*) '✓ Windows platform detected'  
+#endif
+
+        ! Parallel features
+#ifdef USE_MPI
+        write(*,*) '✓ MPI support enabled'
+#endif
+#ifdef USE_OPENMP
+        write(*,*) '✓ OpenMP support enabled'
+#endif
+
+        ! Compiler info (if available)
+        write(*,*) 'Build configuration:'
+        call show_compiler_info()
+
+    end subroutine show_features
+
+    !> Show compiler information
+    subroutine show_compiler_info()
+#ifdef __GFORTRAN__
+        write(*,*) '  - Compiler: GNU Fortran'
+#endif
+#ifdef __INTEL_COMPILER
+        write(*,*) '  - Compiler: Intel Fortran'
+#endif
+    end subroutine show_compiler_info
+
+    !> Get build information as a string
+    function get_build_info() result(info)
+        character(len=200) :: info
+
+        info = 'Features: '
+
+#ifdef DEBUG
+        info = trim(info) // 'DEBUG '
+#endif
+#ifdef RELEASE
+        info = trim(info) // 'RELEASE '  
+#endif
+#ifdef USE_MPI
+        info = trim(info) // 'MPI '
+#endif
+#ifdef USE_OPENMP
+        info = trim(info) // 'OPENMP '
+#endif
+
+        if (len_trim(info) == 10) then ! Only "Features: "
+            info = trim(info) // 'NONE'
+        end if
+
+    end function get_build_info
+
+end module features_demo

example_packages/features_with_dependency/app/main.f90

@@ -0,0 +1,13 @@
+program features_with_dependency_demo
+    use features_with_dependency, only: show_features
+    implicit none
+
+    print *, "=== Features with Dependency Demo ==="
+    print *, ""
+
+    call show_features()
+
+    print *, ""
+    print *, "This demonstrates feature propagation to dependencies."
+
+end program features_with_dependency_demo

example_packages/features_with_dependency/fpm.toml

@@ -0,0 +1,40 @@
+name = "features_with_dependency"
+version = "0.1.0" 
+license = "MIT"
+description = "Demo package testing dependency features"
+
+[[executable]]
+name = "features_with_dependency"
+source-dir = "app"
+main = "main.f90"
+
+[dependencies]
+# Base dependencies (none for this demo - features will add them)
+
+[features]
+# Feature that enables debug mode in the dependency
+with_feat_debug.dependencies.features_demo = { path = "../features_demo", features = ["debug"] }
+with_feat_debug.preprocess.cpp.macros = ["WITH_DEMO","WITH_DEBUG_DEPENDENCY"]
+
+# Feature that enables release mode in the dependency  
+with_feat_release.dependencies.features_demo = { path = "../features_demo", features = ["release"] }
+with_feat_release.preprocess.cpp.macros = ["WITH_DEMO","WITH_RELEASE_DEPENDENCY"]
+
+# Feature that enables multiple dependency features
+with_feat_multi.dependencies.features_demo = { path = "../features_demo", features = ["debug", "mpi"] }
+with_feat_multi.preprocess.cpp.macros = ["WITH_DEMO","WITH_MULTI_DEPENDENCY"]
+
+# Feature for platform-specific dependency features
+linux_specific.linux.dependencies.features_demo = { path = "../features_demo", features = ["linux"] }
+linux_specific.preprocess.cpp.macros = ["WITH_DEMO","LINUX_FEATURES"]
+
+# Feature combining compiler and dependency features
+gfortran_optimized.gfortran.dependencies.features_demo = { path = "../features_demo", features = ["release", "gfortran"] }
+gfortran_optimized.gfortran.flags = "-O3 -march=native"
+gfortran_optimized.preprocess.cpp.macros = ["WITH_DEMO"]
+
+
+[profiles]
+debug_dep = ["with_feat_debug"]
+release_dep = ["with_feat_release"]
+full_test = ["with_feat_multi", "linux_specific"]