hotspot/make/linux/makefiles/gcc.make
changeset 338 5cf9f61d76f4
parent 1 489c9b5090e2
child 744 88e28f2ccee4
child 670 ddf3e9583f2f
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/make/linux/makefiles/gcc.make	Wed Apr 09 14:22:48 2008 -0400
@@ -0,0 +1,158 @@
+#
+# Copyright 1999-2007 Sun Microsystems, Inc.  All Rights Reserved.
+# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+#
+# This code is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License version 2 only, as
+# published by the Free Software Foundation.
+#
+# This code is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+# version 2 for more details (a copy is included in the LICENSE file that
+# accompanied this code).
+#
+# You should have received a copy of the GNU General Public License version
+# 2 along with this work; if not, write to the Free Software Foundation,
+# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+# CA 95054 USA or visit www.sun.com if you need additional information or
+# have any questions.
+#  
+#
+
+#------------------------------------------------------------------------
+# CC, CPP & AS
+
+CPP = g++
+CC  = gcc
+AS  = $(CC) -c
+
+# -dumpversion in gcc-2.91 shows "egcs-2.91.66". In later version, it only
+# prints the numbers (e.g. "2.95", "3.2.1")
+CC_VER_MAJOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f1)
+CC_VER_MINOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f2)
+
+# check for precompiled headers support
+ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 3 \) \| \( \( $(CC_VER_MAJOR) = 3 \) \& \( $(CC_VER_MINOR) \>= 4 \) \))" "0"
+USE_PRECOMPILED_HEADER=1
+PRECOMPILED_HEADER_DIR=.
+PRECOMPILED_HEADER=$(PRECOMPILED_HEADER_DIR)/incls/_precompiled.incl.gch
+endif
+
+
+#------------------------------------------------------------------------
+# Compiler flags
+
+# position-independent code
+PICFLAG = -fPIC
+
+VM_PICFLAG/LIBJVM = $(PICFLAG)
+VM_PICFLAG/AOUT   =
+
+ifneq ($(BUILDARCH), i486)
+VM_PICFLAG        = $(VM_PICFLAG/$(LINK_INTO))
+else
+# PIC has significant overhead on x86, build nonpic VM for now.
+# Link JVM at a "good" base location to avoid unnecessary .text patching.
+JVM_BASE_ADDR     = 0x06000000
+endif
+
+CFLAGS += $(VM_PICFLAG)
+CFLAGS += -fno-rtti
+CFLAGS += -fno-exceptions
+CFLAGS += -D_REENTRANT
+CFLAGS += -fcheck-new
+
+ARCHFLAG = $(ARCHFLAG/$(BUILDARCH))
+ARCHFLAG/i486    = -m32 -march=i586
+ARCHFLAG/amd64   = -m64
+ARCHFLAG/ia64    =
+ARCHFLAG/sparc   = -m32 -mcpu=v9
+ARCHFLAG/sparcv9 = -m64 -mcpu=v9
+
+CFLAGS     += $(ARCHFLAG)
+AOUT_FLAGS += $(ARCHFLAG)
+LFLAGS     += $(ARCHFLAG)
+ASFLAGS    += $(ARCHFLAG)
+
+# Use C++ Interpreter
+ifdef CC_INTERP
+  CFLAGS += -DCC_INTERP
+endif
+
+# Keep temporary files (.ii, .s)
+ifdef NEED_ASM
+  CFLAGS += -save-temps
+else
+  CFLAGS += -pipe
+endif
+
+# Compiler warnings are treated as errors
+WARNINGS_ARE_ERRORS = -Werror
+# Except for a few acceptable ones
+ACCEPTABLE_WARNINGS = -Wpointer-arith -Wconversion -Wsign-compare
+CFLAGS_WARN/DEFAULT = $(WARNINGS_ARE_ERRORS) $(ACCEPTABLE_WARNINGS)
+# Special cases
+CFLAGS_WARN/BYFILE = $(CFLAGS_WARN/$@)$(CFLAGS_WARN/DEFAULT$(CFLAGS_WARN/$@)) 
+
+# The flags to use for an Optimized g++ build
+OPT_CFLAGS += -O3
+
+# Hotspot uses very unstrict aliasing turn this optimization off
+OPT_CFLAGS += -fno-strict-aliasing
+
+# The gcc compiler segv's on ia64 when compiling bytecodeInterpreter.cpp 
+# if we use expensive-optimizations
+ifeq ($(BUILDARCH), ia64)
+OPT_CFLAGS += -fno-expensive-optimizations
+endif
+
+OPT_CFLAGS/NOOPT=-O0
+
+#------------------------------------------------------------------------
+# Linker flags
+
+# statically link libstdc++.so, work with gcc but ignored by g++
+STATIC_STDCXX = -Wl,-Bstatic -lstdc++ -Wl,-Bdynamic
+
+# statically link libgcc and/or libgcc_s, libgcc does not exist before gcc-3.x.
+ifneq ("${CC_VER_MAJOR}", "2")
+STATIC_LIBGCC += -static-libgcc
+endif
+
+ifeq ($(BUILDARCH), ia64)
+LFLAGS += -Wl,-relax
+endif
+
+# Enable linker optimization
+LFLAGS += -Xlinker -O1
+
+# Use $(MAPFLAG:FILENAME=real_file_name) to specify a map file.
+MAPFLAG = -Xlinker --version-script=FILENAME
+
+# Use $(SONAMEFLAG:SONAME=soname) to specify the intrinsic name of a shared obj
+SONAMEFLAG = -Xlinker -soname=SONAME
+
+# Build shared library
+SHARED_FLAG = -shared
+
+# Keep symbols even they are not used
+AOUT_FLAGS += -export-dynamic
+
+#------------------------------------------------------------------------
+# Debug flags
+
+# Use the stabs format for debugging information (this is the default
+# on gcc-2.91). It's good enough, has all the information about line
+# numbers and local variables, and libjvm_g.so is only about 16M.
+# Change this back to "-g" if you want the most expressive format.
+# (warning: that could easily inflate libjvm_g.so to 150M!)
+# Note: The Itanium gcc compiler crashes when using -gstabs.
+DEBUG_CFLAGS/ia64  = -g
+DEBUG_CFLAGS/amd64 = -g
+DEBUG_CFLAGS += $(DEBUG_CFLAGS/$(BUILDARCH))
+ifeq ($(DEBUG_CFLAGS/$(BUILDARCH)),)
+DEBUG_CFLAGS += -gstabs
+endif