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Java example source code file (vm.make)

This example Java source code file (vm.make) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

compiler2_paths, core_paths, darwin, generated, hs_common_src, lflags_vm, libjvm, libjvm_debuginfo, libjvm_diz, libs_vm, os_vendor, quietly, src_files_exclude, xlinker

The vm.make Java example source code

#
# Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
#
# This code is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License version 2 only, as
# published by the Free Software Foundation.
#
# This code is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
# version 2 for more details (a copy is included in the LICENSE file that
# accompanied this code).
#
# You should have received a copy of the GNU General Public License version
# 2 along with this work; if not, write to the Free Software Foundation,
# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
#
# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
# or visit www.oracle.com if you need additional information or have any
# questions.
#
#

# Rules to build JVM and related libraries, included from vm.make in the build
# directory.

# Common build rules.
MAKEFILES_DIR=$(GAMMADIR)/make/$(Platform_os_family)/makefiles
include $(MAKEFILES_DIR)/rules.make
include $(GAMMADIR)/make/altsrc.make

default: build

#----------------------------------------------------------------------
# Defs

GENERATED     = ../generated
DEP_DIR       = $(GENERATED)/dependencies

# reads the generated files defining the set of .o's and the .o .h dependencies
-include $(DEP_DIR)/*.d

# read machine-specific adjustments (%%% should do this via buildtree.make?)
ifeq ($(findstring true, $(JVM_VARIANT_ZERO) $(JVM_VARIANT_ZEROSHARK)), true)
  include $(MAKEFILES_DIR)/zeroshark.make
else
  include $(MAKEFILES_DIR)/$(BUILDARCH).make
endif

# set VPATH so make knows where to look for source files
# Src_Dirs_V is everything in src/share/vm/*, plus the right os/*/vm and cpu/*/vm
# The adfiles directory contains ad_<arch>.[ch]pp.
# The jvmtifiles directory contains jvmti*.[ch]pp
Src_Dirs_V += $(GENERATED)/adfiles $(GENERATED)/jvmtifiles $(GENERATED)/tracefiles
VPATH += $(Src_Dirs_V:%=%:)

# set INCLUDES for C preprocessor.
Src_Dirs_I += $(GENERATED)
# The order is important for the precompiled headers to work.
INCLUDES += $(PRECOMPILED_HEADER_DIR:%=-I%) $(Src_Dirs_I:%=-I%)

# SYMFLAG is used by {jsig,saproc}.make
ifeq ($(ENABLE_FULL_DEBUG_SYMBOLS),1)
  # always build with debug info when we can create .dSYM/.debuginfo files
  SYMFLAG = -g
else
  ifeq (${VERSION}, debug)
    SYMFLAG = -g
  else
    SYMFLAG =
  endif
endif

# HOTSPOT_RELEASE_VERSION and HOTSPOT_BUILD_VERSION are defined
# in $(GAMMADIR)/make/defs.make
ifeq ($(HOTSPOT_BUILD_VERSION),)
  BUILD_VERSION = -DHOTSPOT_RELEASE_VERSION="\"$(HOTSPOT_RELEASE_VERSION)\""
else
  BUILD_VERSION = -DHOTSPOT_RELEASE_VERSION="\"$(HOTSPOT_RELEASE_VERSION)-$(HOTSPOT_BUILD_VERSION)\""
endif

# The following variables are defined in the generated flags.make file.
BUILD_VERSION = -DHOTSPOT_RELEASE_VERSION="\"$(HS_BUILD_VER)\""
JRE_VERSION   = -DJRE_RELEASE_VERSION="\"$(JRE_RELEASE_VER)\""
HS_LIB_ARCH   = -DHOTSPOT_LIB_ARCH=\"$(LIBARCH)\"
BUILD_TARGET  = -DHOTSPOT_BUILD_TARGET="\"$(TARGET)\""
BUILD_USER    = -DHOTSPOT_BUILD_USER="\"$(HOTSPOT_BUILD_USER)\""
VM_DISTRO     = -DHOTSPOT_VM_DISTRO="\"$(HOTSPOT_VM_DISTRO)\""

CXXFLAGS =           \
  ${SYSDEFS}         \
  ${INCLUDES}        \
  ${BUILD_VERSION}   \
  ${BUILD_TARGET}    \
  ${BUILD_USER}      \
  ${HS_LIB_ARCH}     \
  ${VM_DISTRO}

# This is VERY important! The version define must only be supplied to vm_version.o
# If not, ccache will not re-use the cache at all, since the version string might contain
# a time and date.
CXXFLAGS/vm_version.o += ${JRE_VERSION}

CXXFLAGS/BYFILE = $(CXXFLAGS/$@)

# File specific flags
CXXFLAGS += $(CXXFLAGS/BYFILE)

ifdef DEFAULT_LIBPATH
CXXFLAGS += -DDEFAULT_LIBPATH="\"$(DEFAULT_LIBPATH)\""
endif

# CFLAGS_WARN holds compiler options to suppress/enable warnings.
CFLAGS += $(CFLAGS_WARN/BYFILE)

# Do not use C++ exception handling
CFLAGS += $(CFLAGS/NOEX)

# Extra flags from gnumake's invocation or environment
CFLAGS += $(EXTRA_CFLAGS)
LFLAGS += $(EXTRA_CFLAGS)

# Don't set excutable bit on stack segment
# the same could be done by separate execstack command
# Darwin is non-executable-stack by default
ifneq ($(OS_VENDOR), Darwin)
LFLAGS += -Xlinker -z -Xlinker noexecstack
endif

LIBS += -lm

ifeq ($(USE_CLANG),)
  LIBS += -pthread
endif

# By default, link the *.o into the library, not the executable.
LINK_INTO$(LINK_INTO) = LIBJVM

JDK_LIBDIR = $(JAVA_HOME)/jre/lib/$(LIBARCH)

#----------------------------------------------------------------------
# jvm_db & dtrace
include $(MAKEFILES_DIR)/dtrace.make

#----------------------------------------------------------------------
# JVM

JVM    = jvm
ifeq ($(OS_VENDOR), Darwin)
  LIBJVM   = lib$(JVM).dylib
  CFLAGS  += -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE
  ifeq (${VERSION}, $(filter ${VERSION}, debug fastdebug))
    CFLAGS += -DALLOW_OPERATOR_NEW_USAGE
  endif

  LIBJVM_DEBUGINFO   = lib$(JVM).dylib.dSYM
  LIBJVM_DIZ         = lib$(JVM).diz
else
  LIBJVM   = lib$(JVM).so

  LIBJVM_DEBUGINFO   = lib$(JVM).debuginfo
  LIBJVM_DIZ         = lib$(JVM).diz
endif

SPECIAL_PATHS:=adlc c1 gc_implementation opto shark libadt

SOURCE_PATHS=\
  $(shell find $(HS_COMMON_SRC)/share/vm/* -type d \! \
      \( -name DUMMY $(foreach dir,$(SPECIAL_PATHS),-o -name $(dir)) \))
SOURCE_PATHS+=$(HS_COMMON_SRC)/os/$(Platform_os_family)/vm
SOURCE_PATHS+=$(HS_COMMON_SRC)/os/posix/vm
SOURCE_PATHS+=$(HS_COMMON_SRC)/cpu/$(Platform_arch)/vm
SOURCE_PATHS+=$(HS_COMMON_SRC)/os_cpu/$(Platform_os_arch)/vm

CORE_PATHS=$(foreach path,$(SOURCE_PATHS),$(call altsrc,$(path)) $(path))
CORE_PATHS+=$(GENERATED)/jvmtifiles $(GENERATED)/tracefiles

ifneq ($(INCLUDE_TRACE), false)
CORE_PATHS+=$(shell if [ -d $(HS_ALT_SRC)/share/vm/jfr ]; then \
  find $(HS_ALT_SRC)/share/vm/jfr -type d; \
  fi)
endif

COMPILER1_PATHS := $(call altsrc,$(HS_COMMON_SRC)/share/vm/c1)
COMPILER1_PATHS += $(HS_COMMON_SRC)/share/vm/c1

COMPILER2_PATHS := $(call altsrc,$(HS_COMMON_SRC)/share/vm/opto)
COMPILER2_PATHS += $(call altsrc,$(HS_COMMON_SRC)/share/vm/libadt)
COMPILER2_PATHS += $(HS_COMMON_SRC)/share/vm/opto
COMPILER2_PATHS += $(HS_COMMON_SRC)/share/vm/libadt
COMPILER2_PATHS += $(GENERATED)/adfiles

SHARK_PATHS := $(GAMMADIR)/src/share/vm/shark

# Include dirs per type.
Src_Dirs/CORE      := $(CORE_PATHS)
Src_Dirs/COMPILER1 := $(CORE_PATHS) $(COMPILER1_PATHS)
Src_Dirs/COMPILER2 := $(CORE_PATHS) $(COMPILER2_PATHS)
Src_Dirs/TIERED    := $(CORE_PATHS) $(COMPILER1_PATHS) $(COMPILER2_PATHS)
Src_Dirs/ZERO      := $(CORE_PATHS)
Src_Dirs/SHARK     := $(CORE_PATHS) $(SHARK_PATHS)
Src_Dirs := $(Src_Dirs/$(TYPE))

COMPILER2_SPECIFIC_FILES := opto libadt bcEscapeAnalyzer.cpp c2_\* runtime_\*
COMPILER1_SPECIFIC_FILES := c1_\*
SHARK_SPECIFIC_FILES     := shark
ZERO_SPECIFIC_FILES      := zero

# Always exclude these.
Src_Files_EXCLUDE += jsig.c jvmtiEnvRecommended.cpp jvmtiEnvStub.cpp

# Exclude per type.
Src_Files_EXCLUDE/CORE      := $(COMPILER1_SPECIFIC_FILES) $(COMPILER2_SPECIFIC_FILES) $(ZERO_SPECIFIC_FILES) $(SHARK_SPECIFIC_FILES) ciTypeFlow.cpp
Src_Files_EXCLUDE/COMPILER1 := $(COMPILER2_SPECIFIC_FILES) $(ZERO_SPECIFIC_FILES) $(SHARK_SPECIFIC_FILES) ciTypeFlow.cpp
Src_Files_EXCLUDE/COMPILER2 := $(COMPILER1_SPECIFIC_FILES) $(ZERO_SPECIFIC_FILES) $(SHARK_SPECIFIC_FILES)
Src_Files_EXCLUDE/TIERED    := $(ZERO_SPECIFIC_FILES) $(SHARK_SPECIFIC_FILES)
Src_Files_EXCLUDE/ZERO      := $(COMPILER1_SPECIFIC_FILES) $(COMPILER2_SPECIFIC_FILES) $(SHARK_SPECIFIC_FILES) ciTypeFlow.cpp
Src_Files_EXCLUDE/SHARK     := $(COMPILER1_SPECIFIC_FILES) $(COMPILER2_SPECIFIC_FILES) $(ZERO_SPECIFIC_FILES)

Src_Files_EXCLUDE +=  $(Src_Files_EXCLUDE/$(TYPE))

# Special handling of arch model.
ifeq ($(Platform_arch_model), x86_32)
Src_Files_EXCLUDE += \*x86_64\*
endif
ifeq ($(Platform_arch_model), x86_64)
Src_Files_EXCLUDE += \*x86_32\*
endif

# Locate all source files in the given directory, excluding files in Src_Files_EXCLUDE.
define findsrc
	$(notdir $(shell find $(1)/. ! -name . -prune \
		-a \( -name \*.c -o -name \*.cpp -o -name \*.s \) \
		-a ! \( -name DUMMY $(addprefix -o -name ,$(Src_Files_EXCLUDE)) \)))
endef

Src_Files := $(foreach e,$(Src_Dirs),$(call findsrc,$(e)))

Obj_Files = $(sort $(addsuffix .o,$(basename $(Src_Files))))

JVM_OBJ_FILES = $(Obj_Files)

vm_version.o: $(filter-out vm_version.o,$(JVM_OBJ_FILES))

mapfile : $(MAPFILE) vm.def
	rm -f $@
	awk '{ if ($$0 ~ "INSERT VTABLE SYMBOLS HERE")	\
                 { system ("cat vm.def"); }		\
               else					\
                 { print $$0 }				\
             }' > $@ < $(MAPFILE)

mapfile_reorder : mapfile $(REORDERFILE)
	rm -f $@
	cat $^ > $@

vm.def: $(Res_Files) $(Obj_Files)
	sh $(GAMMADIR)/make/bsd/makefiles/build_vm_def.sh *.o > $@

STATIC_CXX = false

ifeq ($(LINK_INTO),AOUT)
  LIBJVM.o                 =
  LIBJVM_MAPFILE           =
  LIBS_VM                  = $(LIBS)
else
  LIBJVM.o                 = $(JVM_OBJ_FILES)
  LIBJVM_MAPFILE$(LDNOMAP) = mapfile_reorder
  LFLAGS_VM$(LDNOMAP)      += $(MAPFLAG:FILENAME=$(LIBJVM_MAPFILE))
  LFLAGS_VM                += $(SONAMEFLAG:SONAME=$(LIBJVM))

  ifeq ($(OS_VENDOR), Darwin)
    LFLAGS_VM += -Xlinker -rpath -Xlinker @loader_path/.
    LFLAGS_VM += -Xlinker -rpath -Xlinker @loader_path/..
    LFLAGS_VM += -Xlinker -install_name -Xlinker @rpath/$(@F)
  endif

  # JVM is statically linked with libgcc[_s] and libstdc++; this is needed to
  # get around library dependency and compatibility issues. Must use gcc not
  # g++ to link.
  ifeq ($(STATIC_CXX), true)
    LFLAGS_VM              += $(STATIC_LIBGCC)
    LIBS_VM                += $(STATIC_STDCXX)
    LINK_VM                = $(LINK_LIB.CC)
  else
    LINK_VM                = $(LINK_LIB.CXX)
  endif

  LIBS_VM                  += $(LIBS)
endif
ifeq ($(JVM_VARIANT_ZERO), true)
  LIBS_VM += $(LIBFFI_LIBS)
endif
ifeq ($(JVM_VARIANT_ZEROSHARK), true)
  LIBS_VM   += $(LIBFFI_LIBS) $(LLVM_LIBS)
  LFLAGS_VM += $(LLVM_LDFLAGS)
endif


# rule for building precompiled header
$(PRECOMPILED_HEADER):
	$(QUIETLY) echo Generating precompiled header $@
	$(QUIETLY) mkdir -p $(PRECOMPILED_HEADER_DIR)
	$(QUIETLY) $(COMPILE.CXX) $(DEPFLAGS) -x c++-header $(PRECOMPILED_HEADER_SRC) -o $@ $(COMPILE_DONE)

# making the library:

ifneq ($(JVM_BASE_ADDR),)
# By default shared library is linked at base address == 0. Modify the
# linker script if JVM prefers a different base location. It can also be
# implemented with 'prelink -r'. But 'prelink' is not (yet) available on
# our build platform (AS-2.1).
LD_SCRIPT = libjvm.so.lds
$(LD_SCRIPT): $(LIBJVM_MAPFILE)
	$(QUIETLY) {                                                \
	  rm -rf $@;                                                \
	  $(LINK_VM) -Wl,--verbose $(LFLAGS_VM) 2>&1             |  \
	    sed -e '/^======/,/^======/!d'                          \
		-e '/^======/d'                                     \
		-e 's/0\( + SIZEOF_HEADERS\)/$(JVM_BASE_ADDR)\1/'   \
		> $@;                                               \
	}
LD_SCRIPT_FLAG = -Wl,-T,$(LD_SCRIPT)
endif

$(LIBJVM): $(LIBJVM.o) $(LIBJVM_MAPFILE) $(LD_SCRIPT)
	$(QUIETLY) {                                                    \
	    echo Linking vm...;                                         \
	    $(LINK_LIB.CXX/PRE_HOOK)                                     \
	    $(LINK_VM) $(LD_SCRIPT_FLAG)                                \
		       $(LFLAGS_VM) -o $@ $(sort $(LIBJVM.o)) $(LIBS_VM); \
	    $(LINK_LIB.CXX/POST_HOOK)                                    \
	    rm -f $@.1; ln -s $@ $@.1;                                  \
	}

ifeq ($(ENABLE_FULL_DEBUG_SYMBOLS),1)
  ifeq ($(OS_VENDOR), Darwin)
	$(DSYMUTIL) $@
    ifeq ($(ZIP_DEBUGINFO_FILES),1)
	$(ZIPEXE) -q -r -y $(LIBJVM_DIZ) $(LIBJVM_DEBUGINFO)
	$(RM) -r $(LIBJVM_DEBUGINFO)
    endif
  else
	$(QUIETLY) $(OBJCOPY) --only-keep-debug $@ $(LIBJVM_DEBUGINFO)
	$(QUIETLY) $(OBJCOPY) --add-gnu-debuglink=$(LIBJVM_DEBUGINFO) $@
    ifeq ($(STRIP_POLICY),all_strip)
	$(QUIETLY) $(STRIP) $@
    else
      ifeq ($(STRIP_POLICY),min_strip)
	$(QUIETLY) $(STRIP) -g $@
      # implied else here is no stripping at all
      endif
    endif
    ifeq ($(ZIP_DEBUGINFO_FILES),1)
	$(ZIPEXE) -q -y $(LIBJVM_DIZ) $(LIBJVM_DEBUGINFO)
	$(RM) $(LIBJVM_DEBUGINFO)
    endif
  endif
endif

DEST_SUBDIR        = $(JDK_LIBDIR)/$(VM_SUBDIR)
DEST_JVM           = $(DEST_SUBDIR)/$(LIBJVM)
DEST_JVM_DEBUGINFO = $(DEST_SUBDIR)/$(LIBJVM_DEBUGINFO)
DEST_JVM_DIZ       = $(DEST_SUBDIR)/$(LIBJVM_DIZ)

install_jvm: $(LIBJVM)
	@echo "Copying $(LIBJVM) to $(DEST_JVM)"
ifeq ($(OS_VENDOR), Darwin)
	$(QUIETLY) test -d $(LIBJVM_DEBUGINFO) && \
	    cp -f -r $(LIBJVM_DEBUGINFO) $(DEST_JVM_DEBUGINFO)
else
	$(QUIETLY) test -f $(LIBJVM_DEBUGINFO) && \
	    cp -f $(LIBJVM_DEBUGINFO) $(DEST_JVM_DEBUGINFO)
endif
	$(QUIETLY) test -f $(LIBJVM_DIZ) && \
	    cp -f $(LIBJVM_DIZ) $(DEST_JVM_DIZ)
	$(QUIETLY) cp -f $(LIBJVM) $(DEST_JVM) && echo "Done"

#----------------------------------------------------------------------
# Other files

# Signal interposition library
include $(MAKEFILES_DIR)/jsig.make

# Serviceability agent
include $(MAKEFILES_DIR)/saproc.make

#----------------------------------------------------------------------

ifeq ($(OS_VENDOR), Darwin)
# no libjvm_db for macosx
build: $(LIBJVM) $(LAUNCHER) $(LIBJSIG) $(BUILDLIBSAPROC) dtraceCheck
	echo "Doing vm.make build:"
else
build: $(LIBJVM) $(LAUNCHER) $(LIBJSIG) $(LIBJVM_DB) $(BUILDLIBSAPROC)
endif

install: install_jvm install_jsig install_saproc

.PHONY: default build install install_jvm

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