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
 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 
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