1 #
2 # Copyright (c) 1998, 2013, 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 # If a SPEC is not set already, then use these defaults.
29 ifeq ($(SPEC),)
30 CXX = g++
31 CC = gcc
32 AS = $(CC) -c
33 MCS = /usr/ccs/bin/mcs
34 endif
35
36 Compiler = gcc
37
38 # -dumpversion in gcc-2.91 shows "egcs-2.91.66". In later version, it only
39 # prints the numbers (e.g. "2.95", "3.2.1")
40 CC_VER_MAJOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f1)
41 CC_VER_MINOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f2)
42
43 # Check for the versions of C++ and C compilers ($CXX and $CC) used.
44
45 # Get the last thing on the line that looks like x.x+ (x is a digit).
46 COMPILER_REV := \
47 $(shell $(CXX) -dumpversion | sed 's/egcs-//' | cut -d'.' -f1)
48 CC_COMPILER_REV := \
49 $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f2)
50
51
52 # check for precompiled headers support
53 ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 3 \) \| \( \( $(CC_VER_MAJOR) = 3 \) \& \( $(CC_VER_MINOR) \>= 4 \) \))" "0"
54 # Allow the user to turn off precompiled headers from the command line.
55 ifneq ($(USE_PRECOMPILED_HEADER),0)
56 PRECOMPILED_HEADER_DIR=.
57 PRECOMPILED_HEADER_SRC=$(GAMMADIR)/src/share/vm/precompiled/precompiled.hpp
58 PRECOMPILED_HEADER=$(PRECOMPILED_HEADER_DIR)/precompiled.hpp.gch
59 endif
60 endif
61
62
63 #------------------------------------------------------------------------
64 # Compiler flags
65
66 # position-independent code
67 PICFLAG = -fPIC
68
69 VM_PICFLAG/LIBJVM = $(PICFLAG)
70 VM_PICFLAG/AOUT =
71 VM_PICFLAG = $(VM_PICFLAG/$(LINK_INTO))
72
73 CFLAGS += $(VM_PICFLAG)
74 CFLAGS += -fno-rtti
75 CFLAGS += -fno-exceptions
76 CFLAGS += -D_REENTRANT
77 CFLAGS += -fcheck-new
78 CFLAGS += -fstack-protector
79
80 ARCHFLAG = $(ARCHFLAG/$(BUILDARCH))
81
82 ARCHFLAG/sparc = -m32 -mcpu=v9
83 ARCHFLAG/sparcv9 = -m64 -mcpu=v9
84 ARCHFLAG/i486 = -m32 -march=i586
85 ARCHFLAG/amd64 = -m64 -march=k8
86
87
88 # Optional sub-directory in /usr/lib where BUILDARCH libraries are kept.
89 ISA_DIR=$(ISA_DIR/$(BUILDARCH))
90 ISA_DIR/amd64=/amd64
91 ISA_DIR/i486=
92 ISA_DIR/sparcv9=/64
93
94
95 CFLAGS += $(ARCHFLAG)
96 AOUT_FLAGS += $(ARCHFLAG)
97 LFLAGS += $(ARCHFLAG)
98 ASFLAGS += $(ARCHFLAG)
99
100 ifeq ($(BUILDARCH), amd64)
101 ASFLAGS += -march=k8 -march=amd64
102 LFLAGS += -march=k8
103 endif
104
105
106 # Use C++ Interpreter
107 ifdef CC_INTERP
108 CFLAGS += -DCC_INTERP
109 endif
110
111 # Keep temporary files (.ii, .s)
112 ifdef NEED_ASM
113 CFLAGS += -save-temps
114 else
115 CFLAGS += -pipe
116 endif
117
118
119 # Compiler warnings are treated as errors
120 WARNINGS_ARE_ERRORS = -Werror
121 # Enable these warnings. See 'info gcc' about details on these options
122 WARNING_FLAGS = -Wpointer-arith -Wconversion -Wsign-compare -Wundef -Wformat=2
123 CFLAGS_WARN/DEFAULT = $(WARNINGS_ARE_ERRORS) $(WARNING_FLAGS)
124 # Special cases
125 CFLAGS_WARN/BYFILE = $(CFLAGS_WARN/$@)$(CFLAGS_WARN/DEFAULT$(CFLAGS_WARN/$@))
126
127 # The flags to use for an Optimized g++ build
128 OPT_CFLAGS += -O3
129
130 # Hotspot uses very unstrict aliasing turn this optimization off
131 OPT_CFLAGS += -fno-strict-aliasing
132
133 # The gcc compiler segv's on ia64 when compiling bytecodeInterpreter.cpp
134 # if we use expensive-optimizations
135 # Note: all ia64 setting reflect the ones for linux
136 # No actial testing was performed: there is no Solaris on ia64 presently
137 ifeq ($(BUILDARCH), ia64)
138 OPT_CFLAGS/bytecodeInterpreter.o += -fno-expensive-optimizations
139 endif
140
141 OPT_CFLAGS/NOOPT=-O0
142
143 # Flags for generating make dependency flags.
144 ifneq ("${CC_VER_MAJOR}", "2")
145 DEPFLAGS = -fpch-deps -MMD -MP -MF $(DEP_DIR)/$(@:%=%.d)
146 endif
147
148 # -DDONT_USE_PRECOMPILED_HEADER will exclude all includes in precompiled.hpp.
149 ifeq ($(USE_PRECOMPILED_HEADER),0)
150 CFLAGS += -DDONT_USE_PRECOMPILED_HEADER
151 endif
152
153 #------------------------------------------------------------------------
154 # Linker flags
155
156 # statically link libstdc++.so, work with gcc but ignored by g++
157 STATIC_STDCXX = -Wl,-Bstatic -lstdc++ -Wl,-Bdynamic
158
159 # statically link libgcc and/or libgcc_s, libgcc does not exist before gcc-3.x.
160 ifneq ("${CC_VER_MAJOR}", "2")
161 STATIC_LIBGCC += -static-libgcc
162 endif
163
164 ifeq ($(BUILDARCH), ia64)
165 # Note: all ia64 setting reflect the ones for linux
166 # No actial testing was performed: there is no Solaris on ia64 presently
167 LFLAGS += -Wl,-relax
168 endif
169
170 ifdef USE_GNULD
171 # Enable linker optimization
172 LFLAGS += -Xlinker -O1
173
174 # Use $(MAPFLAG:FILENAME=real_file_name) to specify a map file.
175 MAPFLAG = -Xlinker --version-script=FILENAME
176 else
177 MAPFLAG = -Xlinker -M -Xlinker FILENAME
178 endif
179
180 # Use $(SONAMEFLAG:SONAME=soname) to specify the intrinsic name of a shared obj
181 SONAMEFLAG = -Xlinker -soname=SONAME
182
183 # Build shared library
184 SHARED_FLAG = -shared
185
186 #------------------------------------------------------------------------
187 # Debug flags
188
189 # Use the stabs format for debugging information (this is the default
190 # on gcc-2.91). It's good enough, has all the information about line
191 # numbers and local variables, and libjvm.so is only about 16M.
192 # Change this back to "-g" if you want the most expressive format.
193 # (warning: that could easily inflate libjvm.so to 150M!)
194 # Note: The Itanium gcc compiler crashes when using -gstabs.
195 DEBUG_CFLAGS/ia64 = -g
196 DEBUG_CFLAGS/amd64 = -g
197 DEBUG_CFLAGS += $(DEBUG_CFLAGS/$(BUILDARCH))
198 ifeq ($(DEBUG_CFLAGS/$(BUILDARCH)),)
199 DEBUG_CFLAGS += -gstabs
200 endif