jdk8-mips64-public/hotspot: make/linux/makefiles/gcc.make@67342b960b47

8008474: Add -Wundef to warning flags.
Summary: Force use of undefined macros to be and error.
Reviewed-by: dholmes, mikael

1 #

     2 # Copyright (c) 1999, 2012, 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 #

    25 #------------------------------------------------------------------------

    26 # CC, CXX & AS

    28 # If a SPEC is not set already, then use these defaults.

    29 ifeq ($(SPEC),)

    30   # When cross-compiling the ALT_COMPILER_PATH points

    31   # to the cross-compilation toolset

    32   ifdef CROSS_COMPILE_ARCH

    33     CXX = $(ALT_COMPILER_PATH)/g++

    34     CC  = $(ALT_COMPILER_PATH)/gcc

    35     HOSTCXX = g++

    36     HOSTCC  = gcc

    37     STRIP = $(ALT_COMPILER_PATH)/strip

    38   else

    39     CXX = g++

    40     CC  = gcc

    41     HOSTCXX = $(CXX)

    42     HOSTCC  = $(CC)

    43     STRIP = strip

    44   endif

    45   AS  = $(CC) -c

    46 endif

    49 # -dumpversion in gcc-2.91 shows "egcs-2.91.66". In later version, it only

    50 # prints the numbers (e.g. "2.95", "3.2.1")

    51 CC_VER_MAJOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f1)

    52 CC_VER_MINOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f2)

    54 # check for precompiled headers support

    55 ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 3 \) \| \( \( $(CC_VER_MAJOR) = 3 \) \& \( $(CC_VER_MINOR) \>= 4 \) \))" "0"

    56 # Allow the user to turn off precompiled headers from the command line.

    57 ifneq ($(USE_PRECOMPILED_HEADER),0)

    58 PRECOMPILED_HEADER_DIR=.

    59 PRECOMPILED_HEADER_SRC=$(GAMMADIR)/src/share/vm/precompiled/precompiled.hpp

    60 PRECOMPILED_HEADER=$(PRECOMPILED_HEADER_DIR)/precompiled.hpp.gch

    61 endif

    62 endif

    65 #------------------------------------------------------------------------

    66 # Compiler flags

    68 # position-independent code

    69 PICFLAG = -fPIC

    71 VM_PICFLAG/LIBJVM = $(PICFLAG)

    72 VM_PICFLAG/AOUT   =

    73 VM_PICFLAG        = $(VM_PICFLAG/$(LINK_INTO))

    75 ifeq ($(JVM_VARIANT_ZERO), true)

    76 CFLAGS += $(LIBFFI_CFLAGS)

    77 endif

    78 ifeq ($(JVM_VARIANT_ZEROSHARK), true)

    79 CFLAGS += $(LIBFFI_CFLAGS)

    80 CFLAGS += $(LLVM_CFLAGS)

    81 endif

    82 CFLAGS += $(VM_PICFLAG)

    83 CFLAGS += -fno-rtti

    84 CFLAGS += -fno-exceptions

    85 CFLAGS += -D_REENTRANT

    86 CFLAGS += -fcheck-new

    87 # version 4 and above support fvisibility=hidden (matches jni_x86.h file)

    88 # except 4.1.2 gives pointless warnings that can't be disabled (afaik)

    89 ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 4 \) \| \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) \>= 3 \) \))" "0"

    90 CFLAGS += -fvisibility=hidden

    91 endif

    93 ARCHFLAG = $(ARCHFLAG/$(BUILDARCH))

    94 ARCHFLAG/i486    = -m32 -march=i586

    95 ARCHFLAG/amd64   = -m64

    96 ARCHFLAG/ia64    =

    97 ARCHFLAG/sparc   = -m32 -mcpu=v9

    98 ARCHFLAG/sparcv9 = -m64 -mcpu=v9

    99 ARCHFLAG/arm     =  -fsigned-char

   100 ARCHFLAG/zero    = $(ZERO_ARCHFLAG)

   101 ifndef E500V2

   102 ARCHFLAG/ppc     =  -mcpu=powerpc

   103 endif

   105 CFLAGS     += $(ARCHFLAG)

   106 AOUT_FLAGS += $(ARCHFLAG)

   107 LFLAGS     += $(ARCHFLAG)

   108 ASFLAGS    += $(ARCHFLAG)

   110 ifdef E500V2

   111 CFLAGS += -DE500V2

   112 endif

   114 # Use C++ Interpreter

   115 ifdef CC_INTERP

   116   CFLAGS += -DCC_INTERP

   117 endif

   119 # Keep temporary files (.ii, .s)

   120 ifdef NEED_ASM

   121   CFLAGS += -save-temps

   122 else

   123   CFLAGS += -pipe

   124 endif

   126 # Compiler warnings are treated as errors

   127 WARNINGS_ARE_ERRORS = -Werror

   129 # Except for a few acceptable ones

   130 # Since GCC 4.3, -Wconversion has changed its meanings to warn these implicit

   131 # conversions which might affect the values. To avoid that, we need to turn

   132 # it off explicitly.

   133 ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 4 \) \| \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) \>= 3 \) \))" "0"

   134 WARNING_FLAGS = -Wpointer-arith -Wsign-compare -Wundef

   135 else

   136 WARNING_FLAGS = -Wpointer-arith -Wconversion -Wsign-compare -Wundef

   137 endif

   139 CFLAGS_WARN/DEFAULT = $(WARNINGS_ARE_ERRORS) $(WARNING_FLAGS)

   140 # Special cases

   141 CFLAGS_WARN/BYFILE = $(CFLAGS_WARN/$@)$(CFLAGS_WARN/DEFAULT$(CFLAGS_WARN/$@))

   143 # The flags to use for an Optimized g++ build

   144 OPT_CFLAGS/SIZE=-Os

   145 OPT_CFLAGS/SPEED=-O3

   147 # Hotspot uses very unstrict aliasing turn this optimization off

   148 # This option is added to CFLAGS rather than OPT_CFLAGS

   149 # so that OPT_CFLAGS overrides get this option too.

   150 CFLAGS += -fno-strict-aliasing

   152 OPT_CFLAGS_DEFAULT ?= SPEED

   154 ifdef OPT_CFLAGS

   155   ifneq ("$(origin OPT_CFLAGS)", "command line")

   156     $(error " Use OPT_EXTRAS instead of OPT_CFLAGS to add extra flags to OPT_CFLAGS.")

   157   endif

   158 endif

   160 OPT_CFLAGS = $(OPT_CFLAGS/$(OPT_CFLAGS_DEFAULT)) $(OPT_EXTRAS)

   162 # The gcc compiler segv's on ia64 when compiling bytecodeInterpreter.cpp

   163 # if we use expensive-optimizations

   164 ifeq ($(BUILDARCH), ia64)

   165 OPT_CFLAGS += -fno-expensive-optimizations

   166 endif

   168 OPT_CFLAGS/NOOPT=-O0

   170 # 6835796. Problem in GCC 4.3.0 with mulnode.o optimized compilation.

   171 ifneq "$(shell expr \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) = 3 \) \))" "0"

   172 OPT_CFLAGS/mulnode.o += -O0

   173 endif

   175 # Flags for generating make dependency flags.

   176 ifneq ("${CC_VER_MAJOR}", "2")

   177 DEPFLAGS = -fpch-deps -MMD -MP -MF $(DEP_DIR)/$(@:%=%.d)

   178 endif

   180 # -DDONT_USE_PRECOMPILED_HEADER will exclude all includes in precompiled.hpp.

   181 ifeq ($(USE_PRECOMPILED_HEADER),0)

   182 CFLAGS += -DDONT_USE_PRECOMPILED_HEADER

   183 endif

   185 #------------------------------------------------------------------------

   186 # Linker flags

   188 # statically link libstdc++.so, work with gcc but ignored by g++

   189 STATIC_STDCXX = -Wl,-Bstatic -lstdc++ -Wl,-Bdynamic

   191 # statically link libgcc and/or libgcc_s, libgcc does not exist before gcc-3.x.

   192 ifneq ("${CC_VER_MAJOR}", "2")

   193 STATIC_LIBGCC += -static-libgcc

   194 endif

   196 ifeq ($(BUILDARCH), ia64)

   197 LFLAGS += -Wl,-relax

   198 endif

   200 # Enable linker optimization

   201 LFLAGS += -Xlinker -O1

   203 # If this is a --hash-style=gnu system, use --hash-style=both

   204 #   The gnu .hash section won't work on some Linux systems like SuSE 10.

   205 _HAS_HASH_STYLE_GNU:=$(shell $(CC) -dumpspecs | grep -- '--hash-style=gnu')

   206 ifneq ($(_HAS_HASH_STYLE_GNU),)

   207   LDFLAGS_HASH_STYLE = -Wl,--hash-style=both

   208 endif

   209 LFLAGS += $(LDFLAGS_HASH_STYLE)

   211 # Use $(MAPFLAG:FILENAME=real_file_name) to specify a map file.

   212 MAPFLAG = -Xlinker --version-script=FILENAME

   214 # Use $(SONAMEFLAG:SONAME=soname) to specify the intrinsic name of a shared obj

   215 SONAMEFLAG = -Xlinker -soname=SONAME

   217 # Build shared library

   218 SHARED_FLAG = -shared

   220 # Keep symbols even they are not used

   221 AOUT_FLAGS += -Xlinker -export-dynamic

   223 #------------------------------------------------------------------------

   224 # Debug flags

   226 # DEBUG_BINARIES uses full -g debug information for all configs

   227 ifeq ($(DEBUG_BINARIES), true)

   228   CFLAGS += -g

   229 else

   230   # Use the stabs format for debugging information (this is the default

   231   # on gcc-2.91). It's good enough, has all the information about line

   232   # numbers and local variables, and libjvm.so is only about 16M.

   233   # Change this back to "-g" if you want the most expressive format.

   234   # (warning: that could easily inflate libjvm.so to 150M!)

   235   # Note: The Itanium gcc compiler crashes when using -gstabs.

   236   DEBUG_CFLAGS/ia64  = -g

   237   DEBUG_CFLAGS/amd64 = -g

   238   DEBUG_CFLAGS/arm   = -g

   239   DEBUG_CFLAGS/ppc   = -g

   240   DEBUG_CFLAGS += $(DEBUG_CFLAGS/$(BUILDARCH))

   241   ifeq ($(DEBUG_CFLAGS/$(BUILDARCH)),)

   242     DEBUG_CFLAGS += -gstabs

   243   endif

   245   ifeq ($(ENABLE_FULL_DEBUG_SYMBOLS),1)

   246     FASTDEBUG_CFLAGS/ia64  = -g

   247     FASTDEBUG_CFLAGS/amd64 = -g

   248     FASTDEBUG_CFLAGS/arm   = -g

   249     FASTDEBUG_CFLAGS/ppc   = -g

   250     FASTDEBUG_CFLAGS += $(DEBUG_CFLAGS/$(BUILDARCH))

   251     ifeq ($(FASTDEBUG_CFLAGS/$(BUILDARCH)),)

   252       FASTDEBUG_CFLAGS += -gstabs

   253     endif

   255     OPT_CFLAGS/ia64  = -g

   256     OPT_CFLAGS/amd64 = -g

   257     OPT_CFLAGS/arm   = -g

   258     OPT_CFLAGS/ppc   = -g

   259     OPT_CFLAGS += $(OPT_CFLAGS/$(BUILDARCH))

   260     ifeq ($(OPT_CFLAGS/$(BUILDARCH)),)

   261       OPT_CFLAGS += -gstabs

   262     endif

   263   endif

   264 endif

   266 # If we are building HEADLESS, pass on to VM

   267 # so it can set the java.awt.headless property

   268 ifdef HEADLESS

   269 CFLAGS += -DHEADLESS

   270 endif

   272 # We are building Embedded for a small device

   273 # favor code space over speed

   274 ifdef MINIMIZE_RAM_USAGE

   275 CFLAGS += -DMINIMIZE_RAM_USAGE

   276 endif

Mercurial > jdk8-mips64-public > hotspot / file revision

make/linux/makefiles/gcc.make@67342b960b47

make/linux/makefiles/gcc.make