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 CC_VER_MICRO := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f3)
  43 
  44 # Check for the versions of C++ and C compilers ($CXX and $CC) used.
  45 
  46 # Get the last thing on the line that looks like x.x+ (x is a digit).
  47 COMPILER_REV := \
  48 $(shell $(CXX) -dumpversion | sed 's/egcs-//' | cut -d'.' -f1)
  49 CC_COMPILER_REV := \
  50 $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f2)
  51 
  52 
  53 # check for precompiled headers support
  54 ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 3 \) \| \( \( $(CC_VER_MAJOR) = 3 \) \& \( $(CC_VER_MINOR) \>= 4 \) \))" "0"
  55 # Allow the user to turn off precompiled headers from the command line.
  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 endif
  62 
  63 
  64 #------------------------------------------------------------------------
  65 # Compiler flags
  66 
  67 # position-independent code
  68 PICFLAG = -fPIC
  69 
  70 VM_PICFLAG/LIBJVM = $(PICFLAG)
  71 VM_PICFLAG/AOUT   =
  72 VM_PICFLAG        = $(VM_PICFLAG/$(LINK_INTO))
  73 
  74 CFLAGS += $(VM_PICFLAG)
  75 CFLAGS += -fno-rtti
  76 CFLAGS += -fno-exceptions
  77 CFLAGS += -D_REENTRANT
  78 CFLAGS += -fcheck-new
  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 
 122 # Enable these warnings. See 'info gcc' about details on these options
 123 WARNING_FLAGS = -Wpointer-arith -Wconversion -Wsign-compare -Wundef -Wformat=2
 124 CFLAGS_WARN/DEFAULT = $(WARNINGS_ARE_ERRORS) $(WARNING_FLAGS)
 125 
 126 # Special cases
 127 CFLAGS_WARN/BYFILE = $(CFLAGS_WARN/$@)$(CFLAGS_WARN/DEFAULT$(CFLAGS_WARN/$@))
 128 
 129 # optimization control flags (Used by fastdebug and release variants)
 130 OPT_CFLAGS/NOOPT=-O0
 131 OPT_CFLAGS/DEBUG=-O0
 132 OPT_CFLAGS/SIZE=-Os
 133 OPT_CFLAGS/SPEED=-O3
 134 
 135 OPT_CFLAGS_DEFAULT ?= SPEED
 136 
 137 # Hotspot uses very unstrict aliasing turn this optimization off
 138 # This option is added to CFLAGS rather than OPT_CFLAGS
 139 # so that OPT_CFLAGS overrides get this option too.
 140 CFLAGS += -fno-strict-aliasing
 141 
 142 ifdef OPT_CFLAGS
 143   ifneq ("$(origin OPT_CFLAGS)", "command line")
 144     $(error " Use OPT_EXTRAS instead of OPT_CFLAGS to add extra flags to OPT_CFLAGS.")
 145   endif
 146 endif
 147 
 148 OPT_CFLAGS = $(OPT_CFLAGS/$(OPT_CFLAGS_DEFAULT)) $(OPT_EXTRAS)
 149 
 150 # The gcc compiler segv's on ia64 when compiling bytecodeInterpreter.cpp
 151 # if we use expensive-optimizations
 152 # Note: all ia64 setting reflect the ones for linux
 153 # No actial testing was performed: there is no Solaris on ia64 presently
 154 ifeq ($(BUILDARCH), ia64)
 155 OPT_CFLAGS/bytecodeInterpreter.o += -fno-expensive-optimizations
 156 endif
 157 
 158 # Work around some compiler bugs.
 159 ifeq ($(USE_CLANG), true)
 160   ifeq ($(shell expr $(CC_VER_MAJOR) = 4 \& $(CC_VER_MINOR) = 2), 1)
 161     OPT_CFLAGS/loopTransform.o += $(OPT_CFLAGS/NOOPT)
 162   endif
 163 else
 164   # Do not allow GCC 4.1.1
 165   ifeq ($(shell expr $(CC_VER_MAJOR) = 4 \& $(CC_VER_MINOR) = 1 \& $(CC_VER_MICRO) = 1), 1)
 166     $(error "GCC $(CC_VER_MAJOR).$(CC_VER_MINOR).$(CC_VER_MICRO) not supported because of https://gcc.gnu.org/bugzilla/show_bug.cgi?id=27724")
 167   endif
 168   # 6835796. Problem in GCC 4.3.0 with mulnode.o optimized compilation.
 169   ifeq ($(shell expr $(CC_VER_MAJOR) = 4 \& $(CC_VER_MINOR) = 3), 1)
 170     OPT_CFLAGS/mulnode.o += $(OPT_CFLAGS/NOOPT)
 171   endif
 172 endif
 173 
 174 # Flags for generating make dependency flags.
 175 ifneq ($(CC_VER_MAJOR), 2)
 176 DEPFLAGS = -fpch-deps -MMD -MP -MF $(DEP_DIR)/$(@:%=%.d)
 177 endif
 178 
 179 # -DDONT_USE_PRECOMPILED_HEADER will exclude all includes in precompiled.hpp.
 180 ifeq ($(USE_PRECOMPILED_HEADER),0)
 181 CFLAGS += -DDONT_USE_PRECOMPILED_HEADER
 182 endif
 183 
 184 #------------------------------------------------------------------------
 185 # Linker flags
 186 
 187 # statically link libstdc++.so, work with gcc but ignored by g++
 188 STATIC_STDCXX = -Wl,-Bstatic -lstdc++ -Wl,-Bdynamic
 189 
 190 
 191 ifdef USE_GNULD
 192   # statically link libgcc and/or libgcc_s, libgcc does not exist before gcc-3.x.
 193   ifneq ($(CC_VER_MAJOR), 2)
 194     STATIC_LIBGCC += -static-libgcc
 195   endif
 196 
 197   # Enable linker optimization
 198   LFLAGS += -Xlinker -O1
 199 
 200   ifneq (, findstring(debug,$(BUILD_FLAVOR)))
 201     # for relocations read-only
 202     LFLAGS += -Xlinker -z -Xlinker relro
 203 
 204     ifeq ($(BUILD_FLAVOR), debug)
 205       # disable incremental relocations linking
 206       LFLAGS += -Xlinker -z -Xlinker now
 207     endif
 208   endif
 209 
 210   ifeq ($(BUILDARCH), ia64)
 211     # Note: all ia64 setting reflect the ones for linux
 212     # No actual testing was performed: there is no Solaris on ia64 presently
 213     LFLAGS += -Wl,-relax
 214   endif
 215 
 216   # Use $(MAPFLAG:FILENAME=real_file_name) to specify a map file.
 217   MAPFLAG = -Xlinker --version-script=FILENAME
 218 else
 219   MAPFLAG = -Xlinker -M -Xlinker FILENAME
 220 endif
 221 
 222 # Use $(SONAMEFLAG:SONAME=soname) to specify the intrinsic name of a shared obj
 223 SONAMEFLAG = -Xlinker -soname=SONAME
 224 
 225 # Build shared library
 226 SHARED_FLAG = -shared
 227 
 228 #------------------------------------------------------------------------
 229 # Debug flags
 230 
 231 # Allow no optimizations.
 232 DEBUG_CFLAGS=-O0
 233 
 234 # Enable debug symbols
 235 DEBUG_CFLAGS += -g
 236 
 237 # Enable bounds checking.
 238 ifeq "$(shell expr \( $(CC_VER_MAJOR) \> 3 \) )" "1"
 239   # stack smashing checks.
 240   DEBUG_CFLAGS += -fstack-protector-all --param ssp-buffer-size=1
 241 endif