1 # 2 # Copyright (c) 2013, 2020, Oracle and/or its affiliates. All rights reserved. 3 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 # 5 # This code is free software; you can redistribute it and/or modify it 6 # under the terms of the GNU General Public License version 2 only, as 7 # published by the Free Software Foundation. Oracle designates this 8 # particular file as subject to the "Classpath" exception as provided 9 # by Oracle in the LICENSE file that accompanied this code. 10 # 11 # This code is distributed in the hope that it will be useful, but WITHOUT 12 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 # version 2 for more details (a copy is included in the LICENSE file that 15 # accompanied this code). 16 # 17 # You should have received a copy of the GNU General Public License version 18 # 2 along with this work; if not, write to the Free Software Foundation, 19 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 # 21 # Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 # or visit www.oracle.com if you need additional information or have any 23 # questions. 24 # 25 26 # Include support files that will setup compiler flags due to the selected 27 # jvm feature set, specific file overrides, and general flags. 28 include lib/JvmFeatures.gmk 29 include lib/JvmOverrideFiles.gmk 30 include lib/JvmFlags.gmk 31 32 ################################################################################ 33 # Setup compilation of the main Hotspot native library (libjvm). 34 35 JVM_OUTPUTDIR := $(JVM_VARIANT_OUTPUTDIR)/libjvm 36 JVM_MAPFILE := $(JVM_OUTPUTDIR)/mapfile 37 38 ################################################################################ 39 # Platform independent setup 40 41 JVM_LDFLAGS += \ 42 $(SHARED_LIBRARY_FLAGS) \ 43 $(JVM_LDFLAGS_FEATURES) \ 44 $(EXTRA_LDFLAGS) \ 45 # 46 47 JVM_ASFLAGS += $(EXTRA_ASFLAGS) 48 49 JVM_LIBS += \ 50 $(JVM_LIBS_FEATURES) \ 51 # 52 53 # These files and directories are always excluded 54 JVM_EXCLUDE_FILES += args.cc 55 JVM_EXCLUDES += adlc 56 57 # Needed by abstract_vm_version.cpp 58 ifeq ($(call isTargetCpu, x86_64), true) 59 OPENJDK_TARGET_CPU_VM_VERSION := amd64 60 else 61 OPENJDK_TARGET_CPU_VM_VERSION := $(OPENJDK_TARGET_CPU) 62 endif 63 64 CFLAGS_VM_VERSION := \ 65 $(VERSION_CFLAGS) \ 66 -DHOTSPOT_VERSION_STRING='"$(VERSION_STRING)"' \ 67 -DDEBUG_LEVEL='"$(DEBUG_LEVEL)"' \ 68 -DHOTSPOT_BUILD_USER='"$(USERNAME)"' \ 69 -DHOTSPOT_VM_DISTRO='"$(HOTSPOT_VM_DISTRO)"' \ 70 -DCPU='"$(OPENJDK_TARGET_CPU_VM_VERSION)"' \ 71 # 72 73 ifneq ($(HOTSPOT_BUILD_TIME), ) 74 CFLAGS_VM_VERSION += -DHOTSPOT_BUILD_TIME='"$(HOTSPOT_BUILD_TIME)"' 75 endif 76 77 ################################################################################ 78 # Disabled warnings 79 80 DISABLED_WARNINGS_gcc := parentheses comment unknown-pragmas address \ 81 delete-non-virtual-dtor char-subscripts array-bounds int-in-bool-context \ 82 ignored-qualifiers missing-field-initializers implicit-fallthrough \ 83 empty-body strict-overflow sequence-point maybe-uninitialized \ 84 misleading-indentation cast-function-type 85 86 ifeq ($(call check-jvm-feature, zero), true) 87 DISABLED_WARNINGS_gcc += return-type switch clobbered 88 endif 89 90 DISABLED_WARNINGS_clang := tautological-compare \ 91 undefined-var-template sometimes-uninitialized unknown-pragmas \ 92 delete-non-virtual-dtor missing-braces char-subscripts \ 93 ignored-qualifiers missing-field-initializers mismatched-tags 94 95 DISABLED_WARNINGS_xlc := tautological-compare shift-negative-value 96 97 DISABLED_WARNINGS_microsoft := 98 99 100 101 ################################################################################ 102 # Platform specific setup 103 104 # ARM source selection 105 106 ifeq ($(call And, $(call isTargetOs, linux) $(call isTargetCpu, arm)), true) 107 JVM_EXCLUDE_PATTERNS += arm_64 108 109 else ifeq ($(call And, $(call isTargetOs, linux) $(call isTargetCpu, aarch64)), true) 110 # For 64-bit arm builds, we use the 64 bit hotspot/src/cpu/arm 111 # hotspot sources if HOTSPOT_TARGET_CPU_ARCH is set to arm. 112 # Exclude the aarch64 and 32 bit arm files for this build. 113 ifeq ($(HOTSPOT_TARGET_CPU_ARCH), arm) 114 JVM_EXCLUDE_PATTERNS += arm_32 aarch64 115 endif 116 endif 117 118 ifeq ($(call isTargetOs, linux macosx windows), true) 119 JVM_PRECOMPILED_HEADER := $(TOPDIR)/src/hotspot/share/precompiled/precompiled.hpp 120 endif 121 122 ifeq ($(call isTargetCpu, x86), true) 123 JVM_EXCLUDE_PATTERNS += x86_64 124 else ifeq ($(call isTargetCpu, x86_64), true) 125 JVM_EXCLUDE_PATTERNS += x86_32 126 endif 127 128 ifeq ($(call isTargetOs, windows), true) 129 ifeq ($(call isTargetCpuBits, 64), true) 130 RC_DESC := 64-Bit$(SPACE) 131 endif 132 JVM_RCFLAGS += -D"HS_FILEDESC=$(HOTSPOT_VM_DISTRO) $(RC_DESC)$(JVM_VARIANT) VM" 133 endif 134 135 JVM_OPTIMIZATION ?= HIGHEST_JVM 136 137 # Need to set JVM_STRIPFLAGS to the default value from SPEC since the STRIPFLAGS 138 # parameter to SetupNativeCompilation allows an empty value to override the 139 # default. 140 JVM_STRIPFLAGS ?= $(STRIPFLAGS) 141 142 # This source set is reused so save in cache. 143 $(call FillFindCache, $(JVM_SRC_DIRS)) 144 145 ################################################################################ 146 # Now set up the actual compilation of the main hotspot native library 147 148 $(eval $(call SetupNativeCompilation, BUILD_LIBJVM, \ 149 NAME := jvm, \ 150 TOOLCHAIN := TOOLCHAIN_LINK_CXX, \ 151 OUTPUT_DIR := $(JVM_LIB_OUTPUTDIR), \ 152 SRC := $(JVM_SRC_DIRS), \ 153 EXCLUDES := $(JVM_EXCLUDES), \ 154 EXCLUDE_FILES := $(JVM_EXCLUDE_FILES), \ 155 EXCLUDE_PATTERNS := $(JVM_EXCLUDE_PATTERNS), \ 156 CFLAGS := $(JVM_CFLAGS), \ 157 abstract_vm_version.cpp_CXXFLAGS := $(CFLAGS_VM_VERSION), \ 158 arguments.cpp_CXXFLAGS := $(CFLAGS_VM_VERSION), \ 159 DISABLED_WARNINGS_gcc := $(DISABLED_WARNINGS_gcc), \ 160 DISABLED_WARNINGS_clang := $(DISABLED_WARNINGS_clang), \ 161 DISABLED_WARNINGS_xlc := $(DISABLED_WARNINGS_xlc), \ 162 DISABLED_WARNINGS_microsoft := $(DISABLED_WARNINGS_microsoft), \ 163 ASFLAGS := $(JVM_ASFLAGS), \ 164 LDFLAGS := $(JVM_LDFLAGS), \ 165 LIBS := $(JVM_LIBS), \ 166 OPTIMIZATION := $(JVM_OPTIMIZATION), \ 167 OBJECT_DIR := $(JVM_OUTPUTDIR)/objs, \ 168 MAPFILE := $(JVM_MAPFILE), \ 169 USE_MAPFILE_FOR_SYMBOLS := true, \ 170 STRIPFLAGS := $(JVM_STRIPFLAGS), \ 171 EMBED_MANIFEST := true, \ 172 RC_FLAGS := $(JVM_RCFLAGS), \ 173 VERSIONINFO_RESOURCE := $(TOPDIR)/src/hotspot/os/windows/version.rc, \ 174 PRECOMPILED_HEADER := $(JVM_PRECOMPILED_HEADER), \ 175 PRECOMPILED_HEADER_EXCLUDE := $(JVM_PRECOMPILED_HEADER_EXCLUDE), \ 176 )) 177 178 # Always recompile abstract_vm_version.cpp if libjvm needs to be relinked. This ensures 179 # that the internal vm version is updated as it relies on __DATE__ and __TIME__ 180 # macros. 181 ABSTRACT_VM_VERSION_OBJ := $(JVM_OUTPUTDIR)/objs/abstract_vm_version$(OBJ_SUFFIX) 182 $(ABSTRACT_VM_VERSION_OBJ): $(filter-out $(ABSTRACT_VM_VERSION_OBJ) $(JVM_MAPFILE), \ 183 $(BUILD_LIBJVM_TARGET_DEPS)) 184 185 ifneq ($(GENERATE_COMPILE_COMMANDS_ONLY), true) 186 ifeq ($(call isTargetOs, windows), true) 187 # It doesn't matter which jvm.lib file gets exported, but we need 188 # to pick just one. 189 ifeq ($(JVM_VARIANT), $(JVM_VARIANT_MAIN)) 190 $(eval $(call SetupCopyFiles, COPY_JVM_LIB, \ 191 DEST := $(LIB_OUTPUTDIR), \ 192 FILES :=$(BUILD_LIBJVM_IMPORT_LIBRARY), \ 193 )) 194 TARGETS += $(COPY_JVM_LIB) 195 endif 196 endif 197 endif 198 199 # AIX warning explanation: 200 # 1500-010 : (W) WARNING in ...: Infinite loop. Program may not stop. 201 # There are several infinite loops in the vm, so better suppress. 202 # 1540-0198 : (W) The omitted keyword "private" is assumed for base class "...". 203 # 1540-0216 : (W) An expression of type .. cannot be converted to type .. 204 # In hotspot this fires for functionpointer to pointer conversions 205 # 1540-1088 : (W) The exception specification is being ignored. 206 # In hotspot this is caused by throw() in declaration of new() in nmethod.hpp. 207 # 1540-1090 : (I) The destructor of "..." might not be called. 208 # 1540-1639 : (I) The behavior of long type bit fields has changed ... 209 210 # Include mapfile generation. It relies on BUILD_LIBJVM_ALL_OBJS which is only 211 # defined after the above call to BUILD_LIBJVM. Mapfile will be generated 212 # after all object files are built, but before the jvm library is linked. 213 include lib/JvmMapfile.gmk 214 215 TARGETS += $(BUILD_LIBJVM) 216 217 ################################################################################ 218 # Hotspot disallows the use of global operators 'new' and 'delete'. This build 219 # time check helps enforce this requirement. If you trigger this check and the 220 # reference is not obvious from the source, GNU objdump can be used to help find 221 # the reference if compiled with GCC: 222 # 223 # objdump -lrdSC <path/to/file.o> 224 # 225 # -C demangle 226 # -d disassemble 227 # -r print relocation entries, interspersed with the disassembly 228 # -S print source code, intermixed with disassembly 229 # -l include filenames and line numbers 230 # 231 # Search the output for the operator(s) of interest, to see where they are 232 # referenced. 233 # 234 # When a reference to the global 'operator delete' is reported, it might be 235 # due to a "deleting destructor". In this case, objdump may show the 236 # reference to be associated with but not actually in a destructor. A 237 # deleting destructor is automatically generated for a class whose destructor 238 # is virtual. A deleting destructor requires an accessible 'operator delete' 239 # for the associated class. If the class doesn't provide a more specific 240 # declaration (either directly or by inheriting from a class that provides 241 # one) then the global definition will be used, triggering this check. 242 243 ifneq ($(GENERATE_COMPILE_COMMANDS_ONLY), true) 244 ifneq ($(filter $(TOOLCHAIN_TYPE), gcc clang), ) 245 246 DEMANGLED_REGEXP := [^:]operator (new|delete) 247 248 # Running c++filt to find offending symbols in all files is too expensive, 249 # so use mangled names when looking for symbols. 250 # Save the demangling for when something is actually found. 251 MANGLED_SYMS := \ 252 _ZdaPv \ 253 _ZdlPv \ 254 _Znam \ 255 _Znwm \ 256 # 257 UNDEF_PATTERN := ' U ' 258 259 define SetupOperatorNewDeleteCheck 260 $1.op_check: $1 261 if [ -n "`$(NM) $$< | $(GREP) $(addprefix -e , $(MANGLED_SYMS)) \ 262 | $(GREP) $(UNDEF_PATTERN)`" ]; then \ 263 $(ECHO) "$$<: Error: Use of global operators new and delete is not allowed in Hotspot:"; \ 264 $(NM) $$< | $(CXXFILT) | $(EGREP) '$(DEMANGLED_REGEXP)' | $(GREP) $(UNDEF_PATTERN); \ 265 $(ECHO) "See: $(TOPDIR)/make/hotspot/lib/CompileJvm.gmk"; \ 266 exit 1; \ 267 fi 268 $(TOUCH) $$@ 269 270 TARGETS += $1.op_check 271 endef 272 273 $(foreach o, $(BUILD_LIBJVM_ALL_OBJS), $(eval $(call SetupOperatorNewDeleteCheck,$o))) 274 endif 275 endif