#

# Copyright (c) 1999, 2015, Oracle and/or its affiliates. All rights reserved.

# Copyright (c) 2012, 2015 SAP. 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

# Set compiler explicitly

CXX = $(COMPILER_PATH)xlC_r

CC  = $(COMPILER_PATH)xlc_r

HOSTCXX = $(CXX)

HOSTCC  = $(CC)

AS  = $(CC) -c

# get xlc version which comes as VV.RR.MMMM.LLLL where 'VV' is the version,

# 'RR' is the release, 'MMMM' is the modification and 'LLLL' is the level.

# We only use 'VV.RR.LLLL' to avoid integer overflows in bash when comparing

# the version numbers (some shells only support 32-bit integer compares!).

CXX_VERSION := $(shell $(CXX) -qversion 2>&1 | \

                   sed -n 's/.*Version: \([0-9]\{2\}\).\([0-9]\{2\}\).[0-9]\{4\}.\([0-9]\{4\}\)/\1\2\3/p')

# xlc 08.00.0000.0023 and higher supports -qtune=balanced

CXX_SUPPORTS_BALANCED_TUNING := $(shell if [ $(CXX_VERSION) -ge 08000023 ] ; then echo "true" ; fi)

# xlc 10.01 is used with aggressive optimizations to boost performance

CXX_IS_V10 := $(shell if [ $(CXX_VERSION) -ge 10010000 ] ; then echo "true" ; fi)

# check for precompiled headers support

# Switch off the precompiled header support. Neither xlC 8.0 nor xlC 10.0

# support precompiled headers. Both "understand" the command line switches "-qusepcomp" and 

# "-qgenpcomp" but when we specify them the following message is printed:

# "1506-755 (W) The -qusepcomp option is not supported in this release."

USE_PRECOMPILED_HEADER = 0

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

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

# Compiler flags

# position-independent code

PICFLAG = -qpic=large

VM_PICFLAG/LIBJVM = $(PICFLAG)

VM_PICFLAG/AOUT   =

VM_PICFLAG        = $(VM_PICFLAG/$(LINK_INTO))

CFLAGS += $(VM_PICFLAG)

CFLAGS += -qnortti

CFLAGS += -qnoeh

CFLAGS += -D_REENTRANT

# no xlc counterpart for -fcheck-new

# CFLAGS += -fcheck-new

# We need to define this on the command line if we want to use the the

# predefined format specifiers from "inttypes.h". Otherwise system headrs

# can indirectly include inttypes.h before we define __STDC_FORMAT_MACROS

# in globalDefinitions.hpp

CFLAGS += -D__STDC_FORMAT_MACROS

ARCHFLAG = -q64

CFLAGS     += $(ARCHFLAG)

AOUT_FLAGS += $(ARCHFLAG)

LFLAGS     += $(ARCHFLAG)

ASFLAGS    += $(ARCHFLAG)

# Use C++ Interpreter

ifdef CC_INTERP

  CFLAGS += -DCC_INTERP

endif

# Keep temporary files (.ii, .s)

# no counterpart on xlc for -save-temps, -pipe

# Compiler warnings are treated as errors

# Do not treat warnings as errors

# WARNINGS_ARE_ERRORS = -Werror

# Except for a few acceptable ones

# ACCEPTABLE_WARNINGS = -Wpointer-arith -Wconversion -Wsign-compare

# CFLAGS_WARN/DEFAULT = $(WARNINGS_ARE_ERRORS) $(ACCEPTABLE_WARNINGS)

CFLAGS_WARN/COMMON = 

CFLAGS_WARN/DEFAULT = $(CFLAGS_WARN/COMMON) $(EXTRA_WARNINGS)

# Special cases

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

# The flags to use for an optimized build

OPT_CFLAGS += -O3

# Hotspot uses very unstrict aliasing turn this optimization off

OPT_CFLAGS += -qalias=noansi

OPT_CFLAGS/NOOPT=-qnoopt

DEPFLAGS = -qmakedep=gcc -MF $(DEP_DIR)/$(@:%=%.d)

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

# Linker flags

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

STATIC_STDCXX = -Wl,-lC_r

# Enable linker optimization

# no counterpart on xlc for this 

# LFLAGS += -Xlinker -O1

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

# MAPFLAG = -Xlinker --version-script=FILENAME

# Build shared library

SHARED_FLAG = -q64 -b64 -bexpall -G -bnoentry -qmkshrobj -brtl -bnolibpath -bernotok

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

# Debug flags

# Always compile with '-g' to get symbols in the stacktraces in the hs_err file

DEBUG_CFLAGS += -g

FASTDEBUG_CFLAGS += -g

OPT_CFLAGS += -g

# DEBUG_BINARIES overrides everything, use full -g debug information

ifeq ($(DEBUG_BINARIES), true)

  DEBUG_CFLAGS = -g

  CFLAGS += $(DEBUG_CFLAGS)

endif

# If we are building HEADLESS, pass on to VM

# so it can set the java.awt.headless property

ifdef HEADLESS

CFLAGS += -DHEADLESS

endif

# We are building Embedded for a small device

# favor code space over speed

ifdef MINIMIZE_RAM_USAGE

CFLAGS += -DMINIMIZE_RAM_USAGE

endif

ifdef CROSS_COMPILE_ARCH

  STRIP = $(ALT_COMPILER_PATH)/strip

else

  STRIP = strip

endif