devel/llvm15: add a STATIC_LIBS option

When enabled (default) assorted LLVM componant static libraries are
included in the package.  Disabling this option reduces the installed
size by ~1GiB.

Sponsored by:	DARPA

devel/llvm15/Makefile

@@ -85,7 +85,7 @@ CMAKE_ARGS+=	-DLLVM_ENABLE_TERMINFO=OFF
 CFLAGS+=	-DNDEBUG
 CXXFLAGS+=	-DNDEBUG
 
-OPTIONS_DEFINE=	BE_AMDGPU BE_WASM CLANG DOCS EXTRAS FLANG LIT LLD LLDB MLIR PYCLANG
+OPTIONS_DEFINE=	BE_AMDGPU BE_WASM CLANG DOCS EXTRAS FLANG LIT LLD LLDB MLIR PYCLANG STATIC_LIBS
 OPTIONS_DEFINE_aarch64=	OPENMP
 OPTIONS_DEFINE_amd64=	COMPILER_RT GOLD OPENMP
 OPTIONS_DEFINE_i386=	COMPILER_RT OPENMP
@@ -93,7 +93,7 @@ OPTIONS_DEFINE_powerpc=	COMPILER_RT GOLD
 OPTIONS_DEFINE_powerpc64=	COMPILER_RT GOLD OPENMP
 OPTIONS_DEFINE_powerpc64le=	COMPILER_RT GOLD OPENMP
 OPTIONS_DEFINE_riscv64=	COMPILER_RT OPENMP
-OPTIONS_DEFAULT=	BE_AMDGPU BE_STANDARD BE_WASM CLANG EXTRAS LIT LLD LLDB PYCLANG
+OPTIONS_DEFAULT=	BE_AMDGPU BE_STANDARD BE_WASM CLANG EXTRAS LIT LLD LLDB PYCLANG STATIC_LIBS
 OPTIONS_DEFAULT_aarch64=	OPENMP
 OPTIONS_DEFAULT_amd64=	COMPILER_RT GOLD OPENMP
 OPTIONS_DEFAULT_i386=	COMPILER_RT
@@ -110,7 +110,7 @@ OPTIONS_SINGLE=		BACKENDS
 OPTIONS_SINGLE_BACKENDS=BE_FREEBSD BE_NATIVE BE_STANDARD
 OPTIONS_SUB=	yes
 # All non-backend options
-_ALL_OPTIONS=	CLANG COMPILER_RT DOCS EXTRAS FLANG GOLD LIT LLD LLDB MLIR OPENMP PYCLANG
+_ALL_OPTIONS=	CLANG COMPILER_RT DOCS EXTRAS FLANG GOLD LIT LLD LLDB MLIR OPENMP PYCLANG STATIC_LIBS
 
 BE_AMDGPU_DESC=		AMD GPU backend (required by mesa)
 BE_FREEBSD_DESC=	Backends for FreeBSD architectures
@@ -120,7 +120,7 @@ BE_NATIVE_CMAKE_ON=	-DLLVM_TARGETS_TO_BUILD="${NATIVE_BACKENDS:ts;}"
 BE_STANDARD_DESC=	All non-experimental backends
 BE_WASM_DESC=		WebAssembly backend (required by firefox via wasi)
 .for BE in FREEBSD NATIVE STANDARD
-BE_${BE}_PLIST_FILES=	${_BE_LIBS_${BE}:O:S/$/.a/:S|^|${LLVM_DIR}/lib/libLLVM|} \
+BE_${BE}_PLIST_FILES=	${_BE_LIBS_${BE}:O:S/$/.a/:S|^|%%STATIC_LIBS%%${LLVM_DIR}/lib/libLLVM|} \
 			${_BE_INCS_${BE}:S|^|${LLVM_DIR}/lib/clang/${LLVM_RELEASE}/include/|:N${LLVM_DIR}/lib/clang/${LLVM_RELEASE}/include/$}
 .endfor
 CLANG_DESC=	Build clang
@@ -181,6 +181,7 @@ PYCLANG_DESC=		Install python bindings to libclang
 PYCLANG_IMPLIES=	CLANG
 PYCLANG_VARS=		_USES_PYTHON=python:3.6+
 PYCLANG_CMAKE_ON=	-DCLANG_PYTHON_BINDINGS_VERSIONS=${PYTHON_VER}
+STATIC_LIBS_DESC=	Install static libraries (does not effect sanitizers)
 
 .if defined(WITH_DEBUG)
 CMAKE_BUILD_TYPE=	RelWithDebInfo
@@ -686,6 +687,10 @@ do-test:
 		${SH} -c ${TEST_CMD}; \
 	fi
 
+
+post-install-STATIC_LIBS-off:
+	${RM} ${STAGEDIR}${LLVM_PREFIX}/lib/lib*.a
+
 build-plist:
 	@[ -d ${STAGEDIR} ] || (echo "Can't make plist before package is staged ${STAGEDIR}" && exit 1)
 	${RM} ${PLIST} ${PLIST}.tmp
@@ -720,6 +725,7 @@ build-plist:
 	    -e 's|\([^0-9]\)${LLVM_MAJOR}\([^0-9]\)|\1%%LLVM_MAJOR%%\2|' \
 	    | ${SORT} >> ${PLIST}.tmp
 	${AWK} '{ \
+	    if ($$0 ~ /lib.lib[a-zA-Z].*\.a$$/ && $$0 !~ /(${BE_PATTERN})$$/) {printf "%%%%STATIC_LIBS%%%%"} \
 	    if ($$0 ~ /${CLANG_PATTERN}/ && $$0 !~ /(${OPENMP_PATTERN}|${EXTRAS_PATTERN}|libclang_rt|${PYCLANG_PATTERN}|${BE_PATTERN})/) {printf "%%%%CLANG%%%%"} \
 	    if ($$0 ~ /${COMPILER_RT_PATTERN}/) \
 		{printf "%%%%COMPILER_RT%%%%"} \