#

# Copyright (c) 1998, 2012, 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.

#  

#

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

# CC, CXX & AS

# If a SPEC is not set already, then use these defaults.

ifeq ($(SPEC),)

  CXX = g++

  CC  = gcc

  AS  = $(CC) -c

  MCS = /usr/ccs/bin/mcs

endif

Compiler = gcc

# -dumpversion in gcc-2.91 shows "egcs-2.91.66". In later version, it only

# prints the numbers (e.g. "2.95", "3.2.1")

CC_VER_MAJOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f1)

CC_VER_MINOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f2)

# Check for the versions of C++ and C compilers ($CXX and $CC) used. 

# Get the last thing on the line that looks like x.x+ (x is a digit).

COMPILER_REV := \

$(shell $(CXX) -dumpversion | sed 's/egcs-//' | cut -d'.' -f1)

CC_COMPILER_REV := \

$(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f2)

# check for precompiled headers support

ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 3 \) \| \( \( $(CC_VER_MAJOR) = 3 \) \& \( $(CC_VER_MINOR) \>= 4 \) \))" "0"

# Allow the user to turn off precompiled headers from the command line.

ifneq ($(USE_PRECOMPILED_HEADER),0)

PRECOMPILED_HEADER_DIR=.

PRECOMPILED_HEADER_SRC=$(GAMMADIR)/src/share/vm/precompiled/precompiled.hpp

PRECOMPILED_HEADER=$(PRECOMPILED_HEADER_DIR)/precompiled.hpp.gch

endif

endif

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

# Compiler flags

# position-independent code

PICFLAG = -fPIC

VM_PICFLAG/LIBJVM = $(PICFLAG)

VM_PICFLAG/AOUT   =

VM_PICFLAG        = $(VM_PICFLAG/$(LINK_INTO))

CFLAGS += $(VM_PICFLAG)

CFLAGS += -fno-rtti

CFLAGS += -fno-exceptions

CFLAGS += -D_REENTRANT

CFLAGS += -fcheck-new

ARCHFLAG = $(ARCHFLAG/$(BUILDARCH))

ARCHFLAG/sparc   = -m32 -mcpu=v9

ARCHFLAG/sparcv9 = -m64 -mcpu=v9

ARCHFLAG/i486    = -m32 -march=i586

ARCHFLAG/amd64   = -m64 -march=k8

# Optional sub-directory in /usr/lib where BUILDARCH libraries are kept.

ISA_DIR=$(ISA_DIR/$(BUILDARCH))

ISA_DIR/amd64=/amd64

ISA_DIR/i486=

ISA_DIR/sparcv9=/64

CFLAGS     += $(ARCHFLAG)

AOUT_FLAGS += $(ARCHFLAG)

LFLAGS     += $(ARCHFLAG)

ASFLAGS    += $(ARCHFLAG)

ifeq ($(BUILDARCH), amd64)

ASFLAGS += -march=k8  -march=amd64

LFLAGS += -march=k8 

endif

# Use C++ Interpreter

ifdef CC_INTERP

  CFLAGS += -DCC_INTERP

endif

# Keep temporary files (.ii, .s)

ifdef NEED_ASM

  CFLAGS += -save-temps

else

  CFLAGS += -pipe

endif

# Compiler warnings are treated as errors 

WARNINGS_ARE_ERRORS = -Werror 

# Enable these warnings. See 'info gcc' about details on these options

WARNING_FLAGS = -Wpointer-arith -Wconversion -Wsign-compare -Wundef

CFLAGS_WARN/DEFAULT = $(WARNINGS_ARE_ERRORS) $(WARNING_FLAGS)

# Special cases 

CFLAGS_WARN/BYFILE = $(CFLAGS_WARN/$@)$(CFLAGS_WARN/DEFAULT$(CFLAGS_WARN/$@))  

# The flags to use for an Optimized g++ build

OPT_CFLAGS += -O3

# Hotspot uses very unstrict aliasing turn this optimization off

OPT_CFLAGS += -fno-strict-aliasing

# The gcc compiler segv's on ia64 when compiling bytecodeInterpreter.cpp 

# if we use expensive-optimizations

# Note: all ia64 setting reflect the ones for linux

# No actial testing was performed: there is no Solaris on ia64 presently

ifeq ($(BUILDARCH), ia64)

OPT_CFLAGS/bytecodeInterpreter.o += -fno-expensive-optimizations

endif

OPT_CFLAGS/NOOPT=-O0

# Flags for generating make dependency flags.

ifneq ("${CC_VER_MAJOR}", "2")

DEPFLAGS = -fpch-deps -MMD -MP -MF $(DEP_DIR)/$(@:%=%.d)

endif

# -DDONT_USE_PRECOMPILED_HEADER will exclude all includes in precompiled.hpp.

ifeq ($(USE_PRECOMPILED_HEADER),0)

CFLAGS += -DDONT_USE_PRECOMPILED_HEADER

endif

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

# Linker flags

# statically link libstdc++.so, work with gcc but ignored by g++

STATIC_STDCXX = -Wl,-Bstatic -lstdc++ -Wl,-Bdynamic

# statically link libgcc and/or libgcc_s, libgcc does not exist before gcc-3.x.

ifneq ("${CC_VER_MAJOR}", "2")

STATIC_LIBGCC += -static-libgcc

endif

ifeq ($(BUILDARCH), ia64)

# Note: all ia64 setting reflect the ones for linux

# No actial testing was performed: there is no Solaris on ia64 presently

LFLAGS += -Wl,-relax

endif

ifdef USE_GNULD

# Enable linker optimization

LFLAGS += -Xlinker -O1

# Use $(MAPFLAG:FILENAME=real_file_name) to specify a map file.

MAPFLAG = -Xlinker --version-script=FILENAME 

else 

MAPFLAG = -Xlinker -M -Xlinker FILENAME 

endif 

# Use $(SONAMEFLAG:SONAME=soname) to specify the intrinsic name of a shared obj

SONAMEFLAG = -Xlinker -soname=SONAME

# Build shared library

SHARED_FLAG = -shared

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

# Debug flags

# Use the stabs format for debugging information (this is the default 

# on gcc-2.91). It's good enough, has all the information about line 

# numbers and local variables, and libjvm.so is only about 16M. 

# Change this back to "-g" if you want the most expressive format. 

# (warning: that could easily inflate libjvm.so to 150M!) 

# Note: The Itanium gcc compiler crashes when using -gstabs. 

DEBUG_CFLAGS/ia64  = -g 

DEBUG_CFLAGS/amd64 = -g 

DEBUG_CFLAGS += $(DEBUG_CFLAGS/$(BUILDARCH)) 

ifeq ($(DEBUG_CFLAGS/$(BUILDARCH)),) 

DEBUG_CFLAGS += -gstabs 

endif