1 #
2 # Copyright (c) 1998, 2011, Oracle and/or its affiliates. All rights reserved.
3 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 #
5 # This code is free software; you can redistribute it and/or modify it
6 # under the terms of the GNU General Public License version 2 only, as
7 # published by the Free Software Foundation.
8 #
9 # This code is distributed in the hope that it will be useful, but WITHOUT
10 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 # version 2 for more details (a copy is included in the LICENSE file that
13 # accompanied this code).
14 #
15 # You should have received a copy of the GNU General Public License version
16 # 2 along with this work; if not, write to the Free Software Foundation,
17 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 #
19 # Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 # or visit www.oracle.com if you need additional information or have any
21 # questions.
22 #
23 #
24
25 #------------------------------------------------------------------------
26 # CC, CXX & AS
27
28 CXX = g++
29 CC = gcc
30 AS = $(CC) -c
31
32 Compiler = gcc
33
34 # -dumpversion in gcc-2.91 shows "egcs-2.91.66". In later version, it only
35 # prints the numbers (e.g. "2.95", "3.2.1")
36 CC_VER_MAJOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f1)
37 CC_VER_MINOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f2)
38
39 # Check for the versions of C++ and C compilers ($CXX and $CC) used.
40
41 # Get the last thing on the line that looks like x.x+ (x is a digit).
42 COMPILER_REV := \
43 $(shell $(CXX) -dumpversion | sed 's/egcs-//' | cut -d'.' -f1)
44 CC_COMPILER_REV := \
45 $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f2)
46
47
48 # check for precompiled headers support
49 ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 3 \) \| \( \( $(CC_VER_MAJOR) = 3 \) \& \( $(CC_VER_MINOR) \>= 4 \) \))" "0"
50 # Allow the user to turn off precompiled headers from the command line.
51 ifneq ($(USE_PRECOMPILED_HEADER),0)
52 PRECOMPILED_HEADER_DIR=.
53 PRECOMPILED_HEADER_SRC=$(GAMMADIR)/src/share/vm/precompiled/precompiled.hpp
54 PRECOMPILED_HEADER=$(PRECOMPILED_HEADER_DIR)/precompiled.hpp.gch
55 endif
56 endif
57
58
59 #------------------------------------------------------------------------
60 # Compiler flags
61
62 # position-independent code
63 PICFLAG = -fPIC
64
65 VM_PICFLAG/LIBJVM = $(PICFLAG)
66 VM_PICFLAG/AOUT =
67 VM_PICFLAG = $(VM_PICFLAG/$(LINK_INTO))
68
69 CFLAGS += $(VM_PICFLAG)
70 CFLAGS += -fno-rtti
71 CFLAGS += -fno-exceptions
72 CFLAGS += -D_REENTRANT
73 CFLAGS += -fcheck-new
74
75 ARCHFLAG = $(ARCHFLAG/$(BUILDARCH))
76
77 ARCHFLAG/sparc = -m32 -mcpu=v9
78 ARCHFLAG/sparcv9 = -m64 -mcpu=v9
79 ARCHFLAG/i486 = -m32 -march=i586
80 ARCHFLAG/amd64 = -m64 -march=k8
81
82
83 # Optional sub-directory in /usr/lib where BUILDARCH libraries are kept.
84 ISA_DIR=$(ISA_DIR/$(BUILDARCH))
85 ISA_DIR/amd64=/amd64
86 ISA_DIR/i486=
87 ISA_DIR/sparcv9=/64
88
89
90 CFLAGS += $(ARCHFLAG)
91 AOUT_FLAGS += $(ARCHFLAG)
92 LFLAGS += $(ARCHFLAG)
93 ASFLAGS += $(ARCHFLAG)
94
95 ifeq ($(BUILDARCH), amd64)
96 ASFLAGS += -march=k8 -march=amd64
97 LFLAGS += -march=k8
98 endif
99
100
101 # Use C++ Interpreter
102 ifdef CC_INTERP
103 CFLAGS += -DCC_INTERP
104 endif
105
106 # Keep temporary files (.ii, .s)
107 ifdef NEED_ASM
108 CFLAGS += -save-temps
109 else
110 CFLAGS += -pipe
111 endif
112
113
114 # Compiler warnings are treated as errors
115 WARNINGS_ARE_ERRORS = -Werror
116 # Enable these warnings. See 'info gcc' about details on these options
117 ADDITIONAL_WARNINGS = -Wpointer-arith -Wconversion -Wsign-compare
118 CFLAGS_WARN/DEFAULT = $(WARNINGS_ARE_ERRORS) $(ADDITIONAL_WARNINGS)
119 # Special cases
120 CFLAGS_WARN/BYFILE = $(CFLAGS_WARN/$@)$(CFLAGS_WARN/DEFAULT$(CFLAGS_WARN/$@))
121
122 # The flags to use for an Optimized g++ build
123 OPT_CFLAGS += -O3
124
125 # Hotspot uses very unstrict aliasing turn this optimization off
126 OPT_CFLAGS += -fno-strict-aliasing
127
128 # The gcc compiler segv's on ia64 when compiling bytecodeInterpreter.cpp
129 # if we use expensive-optimizations
130 # Note: all ia64 setting reflect the ones for linux
131 # No actial testing was performed: there is no Solaris on ia64 presently
132 ifeq ($(BUILDARCH), ia64)
133 OPT_CFLAGS/bytecodeInterpreter.o += -fno-expensive-optimizations
134 endif
135
136 OPT_CFLAGS/NOOPT=-O0
137
138 # Flags for generating make dependency flags.
139 ifneq ("${CC_VER_MAJOR}", "2")
140 DEPFLAGS = -MMD -MP -MF $(DEP_DIR)/$(@:%=%.d)
141 endif
142
143 # -DDONT_USE_PRECOMPILED_HEADER will exclude all includes in precompiled.hpp.
144 ifeq ($(USE_PRECOMPILED_HEADER),0)
145 CFLAGS += -DDONT_USE_PRECOMPILED_HEADER
146 endif
147
148 #------------------------------------------------------------------------
149 # Linker flags
150
151 # statically link libstdc++.so, work with gcc but ignored by g++
152 STATIC_STDCXX = -Wl,-Bstatic -lstdc++ -Wl,-Bdynamic
153
154 # statically link libgcc and/or libgcc_s, libgcc does not exist before gcc-3.x.
155 ifneq ("${CC_VER_MAJOR}", "2")
156 STATIC_LIBGCC += -static-libgcc
157 endif
158
159 ifeq ($(BUILDARCH), ia64)
160 # Note: all ia64 setting reflect the ones for linux
161 # No actial testing was performed: there is no Solaris on ia64 presently
162 LFLAGS += -Wl,-relax
163 endif
164
165 ifdef USE_GNULD
166 # Enable linker optimization
167 LFLAGS += -Xlinker -O1
168
169 # Use $(MAPFLAG:FILENAME=real_file_name) to specify a map file.
170 MAPFLAG = -Xlinker --version-script=FILENAME
171 else
172 MAPFLAG = -Xlinker -M -Xlinker FILENAME
173 endif
174
175 # Use $(SONAMEFLAG:SONAME=soname) to specify the intrinsic name of a shared obj
176 SONAMEFLAG = -Xlinker -soname=SONAME
177
178 # Build shared library
179 SHARED_FLAG = -shared
180
181 #------------------------------------------------------------------------
182 # Debug flags
183
184 # Use the stabs format for debugging information (this is the default
185 # on gcc-2.91). It's good enough, has all the information about line
186 # numbers and local variables, and libjvm_g.so is only about 16M.
187 # Change this back to "-g" if you want the most expressive format.
188 # (warning: that could easily inflate libjvm_g.so to 150M!)
189 # Note: The Itanium gcc compiler crashes when using -gstabs.
190 DEBUG_CFLAGS/ia64 = -g
191 DEBUG_CFLAGS/amd64 = -g
192 DEBUG_CFLAGS += $(DEBUG_CFLAGS/$(BUILDARCH))
193 ifeq ($(DEBUG_CFLAGS/$(BUILDARCH)),)
194 DEBUG_CFLAGS += -gstabs
195 endif
196
197 MCS = /usr/ccs/bin/mcs