1 #
2 # Copyright (c) 1999, 2015, Oracle and/or its affiliates. All rights reserved.
3 # Copyright (c) 2012, 2015 SAP. All rights reserved.
4 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 #
6 # This code is free software; you can redistribute it and/or modify it
7 # under the terms of the GNU General Public License version 2 only, as
8 # published by the Free Software Foundation.
9 #
10 # This code is distributed in the hope that it will be useful, but WITHOUT
11 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 # version 2 for more details (a copy is included in the LICENSE file that
14 # accompanied this code).
15 #
16 # You should have received a copy of the GNU General Public License version
17 # 2 along with this work; if not, write to the Free Software Foundation,
18 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 #
20 # Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 # or visit www.oracle.com if you need additional information or have any
22 # questions.
23 #
24 #
25
26 #------------------------------------------------------------------------
27 # CC, CXX & AS
28
29 # Set compiler explicitly
30 CXX = $(COMPILER_PATH)xlC_r
31 CC = $(COMPILER_PATH)xlc_r
32 HOSTCXX = $(CXX)
33 HOSTCC = $(CC)
34
35 AS = $(CC) -c
36
37 # get xlc version which comes as VV.RR.MMMM.LLLL where 'VV' is the version,
38 # 'RR' is the release, 'MMMM' is the modification and 'LLLL' is the level.
39 # We only use 'VV.RR.LLLL' to avoid integer overflows in bash when comparing
40 # the version numbers (some shells only support 32-bit integer compares!).
41 CXX_VERSION := $(shell $(CXX) -qversion 2>&1 | \
42 sed -n 's/.*Version: \([0-9]\{2\}\).\([0-9]\{2\}\).[0-9]\{4\}.\([0-9]\{4\}\)/\1\2\3/p')
43
44 # xlc 08.00.0000.0023 and higher supports -qtune=balanced
45 CXX_SUPPORTS_BALANCED_TUNING := $(shell if [ $(CXX_VERSION) -ge 08000023 ] ; then echo "true" ; fi)
46 # xlc 10.01 is used with aggressive optimizations to boost performance
47 CXX_IS_V10 := $(shell if [ $(CXX_VERSION) -ge 10010000 ] ; then echo "true" ; fi)
48
49 # check for precompiled headers support
50
51 # Switch off the precompiled header support. Neither xlC 8.0 nor xlC 10.0
52 # support precompiled headers. Both "understand" the command line switches "-qusepcomp" and
53 # "-qgenpcomp" but when we specify them the following message is printed:
54 # "1506-755 (W) The -qusepcomp option is not supported in this release."
55 USE_PRECOMPILED_HEADER = 0
56 ifneq ($(USE_PRECOMPILED_HEADER),0)
57 PRECOMPILED_HEADER_DIR=.
58 PRECOMPILED_HEADER_SRC=$(GAMMADIR)/src/share/vm/precompiled/precompiled.hpp
59 PRECOMPILED_HEADER=$(PRECOMPILED_HEADER_DIR)/precompiled.hpp.gch
60 endif
61
62
63 #------------------------------------------------------------------------
64 # Compiler flags
65
66 # position-independent code
67 PICFLAG = -qpic=large
68
69 VM_PICFLAG/LIBJVM = $(PICFLAG)
70 VM_PICFLAG/AOUT =
71 VM_PICFLAG = $(VM_PICFLAG/$(LINK_INTO))
72
73 CFLAGS += $(VM_PICFLAG)
74 CFLAGS += -qnortti
75 CFLAGS += -qnoeh
76
77 # for compiler-level tls
78 CFLAGS += -qtls=default
79
80 CFLAGS += -D_REENTRANT
81 # no xlc counterpart for -fcheck-new
82 # CFLAGS += -fcheck-new
83
84 # We need to define this on the command line if we want to use the the
85 # predefined format specifiers from "inttypes.h". Otherwise system headrs
86 # can indirectly include inttypes.h before we define __STDC_FORMAT_MACROS
87 # in globalDefinitions.hpp
88 CFLAGS += -D__STDC_FORMAT_MACROS
89
90 ARCHFLAG = -q64
91
92 CFLAGS += $(ARCHFLAG)
93 AOUT_FLAGS += $(ARCHFLAG)
94 LFLAGS += $(ARCHFLAG)
95 ASFLAGS += $(ARCHFLAG)
96
97 # Use C++ Interpreter
98 ifdef CC_INTERP
99 CFLAGS += -DCC_INTERP
100 endif
101
102 # Keep temporary files (.ii, .s)
103 # no counterpart on xlc for -save-temps, -pipe
104
105 # Compiler warnings are treated as errors
106 # Do not treat warnings as errors
107 # WARNINGS_ARE_ERRORS = -Werror
108 # Except for a few acceptable ones
109 # ACCEPTABLE_WARNINGS = -Wpointer-arith -Wconversion -Wsign-compare
110 # CFLAGS_WARN/DEFAULT = $(WARNINGS_ARE_ERRORS) $(ACCEPTABLE_WARNINGS)
111 CFLAGS_WARN/COMMON =
112 CFLAGS_WARN/DEFAULT = $(CFLAGS_WARN/COMMON) $(EXTRA_WARNINGS)
113 # Special cases
114 CFLAGS_WARN/BYFILE = $(CFLAGS_WARN/$@)$(CFLAGS_WARN/DEFAULT$(CFLAGS_WARN/$@))
115
116 # The flags to use for an optimized build
117 OPT_CFLAGS += -O3
118
119 # Hotspot uses very unstrict aliasing turn this optimization off
120 OPT_CFLAGS += -qalias=noansi
121
122 OPT_CFLAGS/NOOPT=-qnoopt
123
124 DEPFLAGS = -qmakedep=gcc -MF $(DEP_DIR)/$(@:%=%.d)
125
126 #------------------------------------------------------------------------
127 # Linker flags
128
129 # statically link libstdc++.so, work with gcc but ignored by g++
130 STATIC_STDCXX = -Wl,-lC_r
131
132 # Enable linker optimization
133 # no counterpart on xlc for this
134 # LFLAGS += -Xlinker -O1
135
136 # Use $(MAPFLAG:FILENAME=real_file_name) to specify a map file.
137 # MAPFLAG = -Xlinker --version-script=FILENAME
138
139 # Build shared library
140 SHARED_FLAG = -q64 -b64 -bexpall -G -bnoentry -qmkshrobj -brtl -bnolibpath -bernotok
141
142 #------------------------------------------------------------------------
143 # Debug flags
144
145 # Always compile with '-g' to get symbols in the stacktraces in the hs_err file
146 DEBUG_CFLAGS += -g
147 FASTDEBUG_CFLAGS += -g
148 OPT_CFLAGS += -g
149
150 # DEBUG_BINARIES overrides everything, use full -g debug information
151 ifeq ($(DEBUG_BINARIES), true)
152 DEBUG_CFLAGS = -g
153 CFLAGS += $(DEBUG_CFLAGS)
154 endif
155
156 # If we are building HEADLESS, pass on to VM
157 # so it can set the java.awt.headless property
158 ifdef HEADLESS
159 CFLAGS += -DHEADLESS
160 endif
161
162 # We are building Embedded for a small device
163 # favor code space over speed
164 ifdef MINIMIZE_RAM_USAGE
165 CFLAGS += -DMINIMIZE_RAM_USAGE
166 endif
167
168 ifdef CROSS_COMPILE_ARCH
169 STRIP = $(ALT_COMPILER_PATH)/strip
170 else
171 STRIP = strip
172 endif