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
79 ARCHFLAG = $(ARCHFLAG/$(BUILDARCH))
80
81 ARCHFLAG/sparc = -m32 -mcpu=v9
82 ARCHFLAG/sparcv9 = -m64 -mcpu=v9
83 ARCHFLAG/i486 = -m32 -march=i586
84 ARCHFLAG/amd64 = -m64 -march=k8
85
86
87 # Optional sub-directory in /usr/lib where BUILDARCH libraries are kept.
88 ISA_DIR=$(ISA_DIR/$(BUILDARCH))
89 ISA_DIR/amd64=/amd64
90 ISA_DIR/i486=
91 ISA_DIR/sparcv9=/64
92
93
94 CFLAGS += $(ARCHFLAG)
95 AOUT_FLAGS += $(ARCHFLAG)
96 LFLAGS += $(ARCHFLAG)
97 ASFLAGS += $(ARCHFLAG)
98
99 ifeq ($(BUILDARCH), amd64)
100 ASFLAGS += -march=k8 -march=amd64
101 LFLAGS += -march=k8
102 endif
103
104
105 # Use C++ Interpreter
106 ifdef CC_INTERP
107 CFLAGS += -DCC_INTERP
108 endif
109
110 # Keep temporary files (.ii, .s)
111 ifdef NEED_ASM
112 CFLAGS += -save-temps
113 else
114 CFLAGS += -pipe
115 endif
116
117
118 # Compiler warnings are treated as errors
119 WARNINGS_ARE_ERRORS = -Werror
120 # Enable these warnings. See 'info gcc' about details on these options
121 WARNING_FLAGS = -Wpointer-arith -Wconversion -Wsign-compare -Wundef -Wformat=2 -Wno-error=format-nonliteral
122 CFLAGS_WARN/DEFAULT = $(WARNINGS_ARE_ERRORS) $(WARNING_FLAGS)
123 # Special cases
124 CFLAGS_WARN/BYFILE = $(CFLAGS_WARN/$@)$(CFLAGS_WARN/DEFAULT$(CFLAGS_WARN/$@))
125
126 # The flags to use for an Optimized g++ build
127 OPT_CFLAGS += -O3
128
129 # Hotspot uses very unstrict aliasing turn this optimization off
130 OPT_CFLAGS += -fno-strict-aliasing
131
132 # The gcc compiler segv's on ia64 when compiling bytecodeInterpreter.cpp
133 # if we use expensive-optimizations
134 # Note: all ia64 setting reflect the ones for linux
135 # No actial testing was performed: there is no Solaris on ia64 presently
136 ifeq ($(BUILDARCH), ia64)
137 OPT_CFLAGS/bytecodeInterpreter.o += -fno-expensive-optimizations
138 endif
139
140 OPT_CFLAGS/NOOPT=-O0
141
142 # Flags for generating make dependency flags.
143 ifneq ("${CC_VER_MAJOR}", "2")
144 DEPFLAGS = -fpch-deps -MMD -MP -MF $(DEP_DIR)/$(@:%=%.d)
145 endif
146
147 # -DDONT_USE_PRECOMPILED_HEADER will exclude all includes in precompiled.hpp.
148 ifeq ($(USE_PRECOMPILED_HEADER),0)
149 CFLAGS += -DDONT_USE_PRECOMPILED_HEADER
150 endif
151
152 #------------------------------------------------------------------------
153 # Linker flags
154
155 # statically link libstdc++.so, work with gcc but ignored by g++
156 STATIC_STDCXX = -Wl,-Bstatic -lstdc++ -Wl,-Bdynamic
157
158 # statically link libgcc and/or libgcc_s, libgcc does not exist before gcc-3.x.
159 ifneq ("${CC_VER_MAJOR}", "2")
160 STATIC_LIBGCC += -static-libgcc
161 endif
162
163 ifeq ($(BUILDARCH), ia64)
164 # Note: all ia64 setting reflect the ones for linux
165 # No actial testing was performed: there is no Solaris on ia64 presently
166 LFLAGS += -Wl,-relax
167 endif
168
169 ifdef USE_GNULD
170 # Enable linker optimization
171 LFLAGS += -Xlinker -O1
172
173 # Use $(MAPFLAG:FILENAME=real_file_name) to specify a map file.
174 MAPFLAG = -Xlinker --version-script=FILENAME
175 else
176 MAPFLAG = -Xlinker -M -Xlinker FILENAME
177 endif
178
179 # Use $(SONAMEFLAG:SONAME=soname) to specify the intrinsic name of a shared obj
180 SONAMEFLAG = -Xlinker -soname=SONAME
181
182 # Build shared library
183 SHARED_FLAG = -shared
184
185 #------------------------------------------------------------------------
186 # Debug flags
187
188 # Use the stabs format for debugging information (this is the default
189 # on gcc-2.91). It's good enough, has all the information about line
190 # numbers and local variables, and libjvm.so is only about 16M.
191 # Change this back to "-g" if you want the most expressive format.
192 # (warning: that could easily inflate libjvm.so to 150M!)
193 # Note: The Itanium gcc compiler crashes when using -gstabs.
194 DEBUG_CFLAGS/ia64 = -g
195 DEBUG_CFLAGS/amd64 = -g
196 DEBUG_CFLAGS += $(DEBUG_CFLAGS/$(BUILDARCH))
197 ifeq ($(DEBUG_CFLAGS/$(BUILDARCH)),)
198 DEBUG_CFLAGS += -gstabs
199 endif