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1 #
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2 # Copyright 1999-2007 Sun Microsystems, Inc. All Rights Reserved.
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3 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 #
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5 # This code is free software; you can redistribute it and/or modify it
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6 # under the terms of the GNU General Public License version 2 only, as
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7 # published by the Free Software Foundation.
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8 #
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9 # This code is distributed in the hope that it will be useful, but WITHOUT
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10 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 # version 2 for more details (a copy is included in the LICENSE file that
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13 # accompanied this code).
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14 #
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15 # You should have received a copy of the GNU General Public License version
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16 # 2 along with this work; if not, write to the Free Software Foundation,
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17 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 #
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19 # Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 # CA 95054 USA or visit www.sun.com if you need additional information or
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21 # have any questions.
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22 #
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23 #
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24
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25 #------------------------------------------------------------------------
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26 # CC, CPP & AS
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27
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28 CPP = g++
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29 CC = gcc
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30 AS = $(CC) -c
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31
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32 # -dumpversion in gcc-2.91 shows "egcs-2.91.66". In later version, it only
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33 # prints the numbers (e.g. "2.95", "3.2.1")
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34 CC_VER_MAJOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f1)
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35 CC_VER_MINOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f2)
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36
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37 # check for precompiled headers support
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38 ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 3 \) \| \( \( $(CC_VER_MAJOR) = 3 \) \& \( $(CC_VER_MINOR) \>= 4 \) \))" "0"
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39 USE_PRECOMPILED_HEADER=1
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40 PRECOMPILED_HEADER_DIR=.
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41 PRECOMPILED_HEADER=$(PRECOMPILED_HEADER_DIR)/incls/_precompiled.incl.gch
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42 endif
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43
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44
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45 #------------------------------------------------------------------------
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46 # Compiler flags
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47
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48 # position-independent code
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49 PICFLAG = -fPIC
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50
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51 VM_PICFLAG/LIBJVM = $(PICFLAG)
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52 VM_PICFLAG/AOUT =
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53
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54 ifneq ($(BUILDARCH), i486)
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55 VM_PICFLAG = $(VM_PICFLAG/$(LINK_INTO))
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56 else
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57 # PIC has significant overhead on x86, build nonpic VM for now.
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58 # Link JVM at a "good" base location to avoid unnecessary .text patching.
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59 JVM_BASE_ADDR = 0x06000000
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60 endif
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61
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62 CFLAGS += $(VM_PICFLAG)
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63 CFLAGS += -fno-rtti
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64 CFLAGS += -fno-exceptions
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65 CFLAGS += -D_REENTRANT
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66 CFLAGS += -fcheck-new
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67
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68 ARCHFLAG = $(ARCHFLAG/$(BUILDARCH))
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69 ARCHFLAG/i486 = -m32 -march=i586
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70 ARCHFLAG/amd64 = -m64
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71 ARCHFLAG/ia64 =
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72 ARCHFLAG/sparc = -m32 -mcpu=v9
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73 ARCHFLAG/sparcv9 = -m64 -mcpu=v9
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74
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75 CFLAGS += $(ARCHFLAG)
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76 AOUT_FLAGS += $(ARCHFLAG)
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77 LFLAGS += $(ARCHFLAG)
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78 ASFLAGS += $(ARCHFLAG)
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79
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80 # Use C++ Interpreter
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81 ifdef CC_INTERP
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82 CFLAGS += -DCC_INTERP
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83 endif
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84
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85 # Keep temporary files (.ii, .s)
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86 ifdef NEED_ASM
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87 CFLAGS += -save-temps
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88 else
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89 CFLAGS += -pipe
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90 endif
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91
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92 # Compiler warnings are treated as errors
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93 WARNINGS_ARE_ERRORS = -Werror
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94 # Except for a few acceptable ones
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95 ACCEPTABLE_WARNINGS = -Wpointer-arith -Wconversion -Wsign-compare
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96 CFLAGS_WARN/DEFAULT = $(WARNINGS_ARE_ERRORS) $(ACCEPTABLE_WARNINGS)
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97 # Special cases
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98 CFLAGS_WARN/BYFILE = $(CFLAGS_WARN/$@)$(CFLAGS_WARN/DEFAULT$(CFLAGS_WARN/$@))
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99
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100 # The flags to use for an Optimized g++ build
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101 OPT_CFLAGS += -O3
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102
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103 # Hotspot uses very unstrict aliasing turn this optimization off
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104 OPT_CFLAGS += -fno-strict-aliasing
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105
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106 # The gcc compiler segv's on ia64 when compiling bytecodeInterpreter.cpp
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107 # if we use expensive-optimizations
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108 ifeq ($(BUILDARCH), ia64)
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109 OPT_CFLAGS += -fno-expensive-optimizations
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110 endif
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111
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112 OPT_CFLAGS/NOOPT=-O0
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113
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114 #------------------------------------------------------------------------
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115 # Linker flags
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116
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117 # statically link libstdc++.so, work with gcc but ignored by g++
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118 STATIC_STDCXX = -Wl,-Bstatic -lstdc++ -Wl,-Bdynamic
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119
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120 # statically link libgcc and/or libgcc_s, libgcc does not exist before gcc-3.x.
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121 ifneq ("${CC_VER_MAJOR}", "2")
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122 STATIC_LIBGCC += -static-libgcc
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123 endif
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124
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125 ifeq ($(BUILDARCH), ia64)
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126 LFLAGS += -Wl,-relax
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127 endif
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128
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129 # Enable linker optimization
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130 LFLAGS += -Xlinker -O1
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131
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132 # Use $(MAPFLAG:FILENAME=real_file_name) to specify a map file.
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133 MAPFLAG = -Xlinker --version-script=FILENAME
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134
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135 # Use $(SONAMEFLAG:SONAME=soname) to specify the intrinsic name of a shared obj
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136 SONAMEFLAG = -Xlinker -soname=SONAME
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137
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138 # Build shared library
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139 SHARED_FLAG = -shared
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140
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141 # Keep symbols even they are not used
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142 AOUT_FLAGS += -export-dynamic
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143
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144 #------------------------------------------------------------------------
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145 # Debug flags
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146
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147 # Use the stabs format for debugging information (this is the default
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148 # on gcc-2.91). It's good enough, has all the information about line
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149 # numbers and local variables, and libjvm_g.so is only about 16M.
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150 # Change this back to "-g" if you want the most expressive format.
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151 # (warning: that could easily inflate libjvm_g.so to 150M!)
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152 # Note: The Itanium gcc compiler crashes when using -gstabs.
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153 DEBUG_CFLAGS/ia64 = -g
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154 DEBUG_CFLAGS/amd64 = -g
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155 DEBUG_CFLAGS += $(DEBUG_CFLAGS/$(BUILDARCH))
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156 ifeq ($(DEBUG_CFLAGS/$(BUILDARCH)),)
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157 DEBUG_CFLAGS += -gstabs
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158 endif
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