#

# Copyright (c) 1998, 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.

#

#

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

# 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)

CC_VER_MICRO := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f3)

# 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 -Wformat=2

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

# Special cases

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

# optimization control flags (Used by fastdebug and release variants)

OPT_CFLAGS/NOOPT=-O0

OPT_CFLAGS/DEBUG=-O0

OPT_CFLAGS/SIZE=-Os

OPT_CFLAGS/SPEED=-O3

OPT_CFLAGS_DEFAULT ?= SPEED

# Hotspot uses very unstrict aliasing turn this optimization off

# This option is added to CFLAGS rather than OPT_CFLAGS

# so that OPT_CFLAGS overrides get this option too.

CFLAGS += -fno-strict-aliasing

ifdef OPT_CFLAGS

  ifneq ("$(origin OPT_CFLAGS)", "command line")

    $(error " Use OPT_EXTRAS instead of OPT_CFLAGS to add extra flags to OPT_CFLAGS.")

  endif

endif

OPT_CFLAGS = $(OPT_CFLAGS/$(OPT_CFLAGS_DEFAULT)) $(OPT_EXTRAS)

# 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

# Work around some compiler bugs.

ifeq ($(USE_CLANG), true)

  ifeq ($(shell expr $(CC_VER_MAJOR) = 4 \& $(CC_VER_MINOR) = 2), 1)

    OPT_CFLAGS/loopTransform.o += $(OPT_CFLAGS/NOOPT)

  endif

else

  # Do not allow GCC 4.1.1

  ifeq ($(shell expr $(CC_VER_MAJOR) = 4 \& $(CC_VER_MINOR) = 1 \& $(CC_VER_MICRO) = 1), 1)

    $(error "GCC $(CC_VER_MAJOR).$(CC_VER_MINOR).$(CC_VER_MICRO) not supported because of https://gcc.gnu.org/bugzilla/show_bug.cgi?id=27724")

  endif

  # 6835796. Problem in GCC 4.3.0 with mulnode.o optimized compilation.

  ifeq ($(shell expr $(CC_VER_MAJOR) = 4 \& $(CC_VER_MINOR) = 3), 1)

    OPT_CFLAGS/mulnode.o += $(OPT_CFLAGS/NOOPT)

  endif

endif

# 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

ifdef USE_GNULD

  # 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

  # Enable linker optimization

  LFLAGS += -Xlinker -O1

  ifneq (, findstring(debug,$(BUILD_FLAVOR)))

    # for relocations read-only

    LFLAGS += -Xlinker -z -Xlinker relro

    ifeq ($(BUILD_FLAVOR), debug)

      # disable incremental relocations linking

      LFLAGS += -Xlinker -z -Xlinker now

    endif

  endif

  ifeq ($(BUILDARCH), ia64)

    # Note: all ia64 setting reflect the ones for linux

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

    LFLAGS += -Wl,-relax

  endif

  # 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

# Allow no optimizations.

DEBUG_CFLAGS=-O0

# Enable debug symbols

DEBUG_CFLAGS += -g

# Enable bounds checking.

ifeq "$(shell expr \( $(CC_VER_MAJOR) \> 3 \) )" "1"

  # stack smashing checks.

  DEBUG_CFLAGS += -fstack-protector-all --param ssp-buffer-size=1

endif