make/linux/makefiles/gcc.make

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rev 2852 : 7116081: USE_PRECOMPILED_HEADER=0 triggers a single threaded build of the JVM
Summary: Changed the conditional to see if the precompiled header has been specified. Also, removed the unused PrecompiledOption.
Reviewed-by: TBD1, TBD2


  33 HOSTCPP = g++
  34 HOSTCC  = gcc
  35 else
  36 CPP = g++
  37 CC  = gcc
  38 HOSTCPP = $(CPP)
  39 HOSTCC  = $(CC)
  40 endif
  41 
  42 AS  = $(CC) -c
  43 
  44 # -dumpversion in gcc-2.91 shows "egcs-2.91.66". In later version, it only
  45 # prints the numbers (e.g. "2.95", "3.2.1")
  46 CC_VER_MAJOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f1)
  47 CC_VER_MINOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f2)
  48 
  49 # check for precompiled headers support
  50 ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 3 \) \| \( \( $(CC_VER_MAJOR) = 3 \) \& \( $(CC_VER_MINOR) \>= 4 \) \))" "0"
  51 # Allow the user to turn off precompiled headers from the command line.
  52 ifneq ($(USE_PRECOMPILED_HEADER),0)
  53 USE_PRECOMPILED_HEADER=1
  54 PRECOMPILED_HEADER_DIR=.
  55 PRECOMPILED_HEADER_SRC=$(GAMMADIR)/src/share/vm/precompiled/precompiled.hpp
  56 PRECOMPILED_HEADER=$(PRECOMPILED_HEADER_DIR)/precompiled.hpp.gch
  57 endif
  58 endif
  59 
  60 
  61 #------------------------------------------------------------------------
  62 # Compiler flags
  63 
  64 # position-independent code
  65 PICFLAG = -fPIC
  66 
  67 VM_PICFLAG/LIBJVM = $(PICFLAG)
  68 VM_PICFLAG/AOUT   =
  69 VM_PICFLAG        = $(VM_PICFLAG/$(LINK_INTO))
  70 
  71 ifeq ($(ZERO_BUILD), true)
  72 CFLAGS += $(LIBFFI_CFLAGS)
  73 endif


 148 
 149 # The gcc compiler segv's on ia64 when compiling bytecodeInterpreter.cpp 
 150 # if we use expensive-optimizations
 151 ifeq ($(BUILDARCH), ia64)
 152 OPT_CFLAGS += -fno-expensive-optimizations
 153 endif
 154 
 155 OPT_CFLAGS/NOOPT=-O0
 156 
 157 # 6835796. Problem in GCC 4.3.0 with mulnode.o optimized compilation. 
 158 ifneq "$(shell expr \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) = 3 \) \))" "0"
 159 OPT_CFLAGS/mulnode.o += -O0
 160 endif
 161 
 162 # Flags for generating make dependency flags.
 163 ifneq ("${CC_VER_MAJOR}", "2")
 164 DEPFLAGS = -MMD -MP -MF $(DEP_DIR)/$(@:%=%.d)
 165 endif
 166 
 167 # -DDONT_USE_PRECOMPILED_HEADER will exclude all includes in precompiled.hpp.
 168 ifneq ($(USE_PRECOMPILED_HEADER),1)
 169 CFLAGS += -DDONT_USE_PRECOMPILED_HEADER
 170 endif
 171 
 172 #------------------------------------------------------------------------
 173 # Linker flags
 174 
 175 # statically link libstdc++.so, work with gcc but ignored by g++
 176 STATIC_STDCXX = -Wl,-Bstatic -lstdc++ -Wl,-Bdynamic
 177 
 178 # statically link libgcc and/or libgcc_s, libgcc does not exist before gcc-3.x.
 179 ifneq ("${CC_VER_MAJOR}", "2")
 180 STATIC_LIBGCC += -static-libgcc
 181 endif
 182 
 183 ifeq ($(BUILDARCH), ia64)
 184 LFLAGS += -Wl,-relax
 185 endif
 186 
 187 # Enable linker optimization
 188 LFLAGS += -Xlinker -O1




  33 HOSTCPP = g++
  34 HOSTCC  = gcc
  35 else
  36 CPP = g++
  37 CC  = gcc
  38 HOSTCPP = $(CPP)
  39 HOSTCC  = $(CC)
  40 endif
  41 
  42 AS  = $(CC) -c
  43 
  44 # -dumpversion in gcc-2.91 shows "egcs-2.91.66". In later version, it only
  45 # prints the numbers (e.g. "2.95", "3.2.1")
  46 CC_VER_MAJOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f1)
  47 CC_VER_MINOR := $(shell $(CC) -dumpversion | sed 's/egcs-//' | cut -d'.' -f2)
  48 
  49 # check for precompiled headers support
  50 ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 3 \) \| \( \( $(CC_VER_MAJOR) = 3 \) \& \( $(CC_VER_MINOR) \>= 4 \) \))" "0"
  51 # Allow the user to turn off precompiled headers from the command line.
  52 ifneq ($(USE_PRECOMPILED_HEADER),0)

  53 PRECOMPILED_HEADER_DIR=.
  54 PRECOMPILED_HEADER_SRC=$(GAMMADIR)/src/share/vm/precompiled/precompiled.hpp
  55 PRECOMPILED_HEADER=$(PRECOMPILED_HEADER_DIR)/precompiled.hpp.gch
  56 endif
  57 endif
  58 
  59 
  60 #------------------------------------------------------------------------
  61 # Compiler flags
  62 
  63 # position-independent code
  64 PICFLAG = -fPIC
  65 
  66 VM_PICFLAG/LIBJVM = $(PICFLAG)
  67 VM_PICFLAG/AOUT   =
  68 VM_PICFLAG        = $(VM_PICFLAG/$(LINK_INTO))
  69 
  70 ifeq ($(ZERO_BUILD), true)
  71 CFLAGS += $(LIBFFI_CFLAGS)
  72 endif


 147 
 148 # The gcc compiler segv's on ia64 when compiling bytecodeInterpreter.cpp 
 149 # if we use expensive-optimizations
 150 ifeq ($(BUILDARCH), ia64)
 151 OPT_CFLAGS += -fno-expensive-optimizations
 152 endif
 153 
 154 OPT_CFLAGS/NOOPT=-O0
 155 
 156 # 6835796. Problem in GCC 4.3.0 with mulnode.o optimized compilation. 
 157 ifneq "$(shell expr \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) = 3 \) \))" "0"
 158 OPT_CFLAGS/mulnode.o += -O0
 159 endif
 160 
 161 # Flags for generating make dependency flags.
 162 ifneq ("${CC_VER_MAJOR}", "2")
 163 DEPFLAGS = -MMD -MP -MF $(DEP_DIR)/$(@:%=%.d)
 164 endif
 165 
 166 # -DDONT_USE_PRECOMPILED_HEADER will exclude all includes in precompiled.hpp.
 167 ifeq ($(USE_PRECOMPILED_HEADER),0)
 168 CFLAGS += -DDONT_USE_PRECOMPILED_HEADER
 169 endif
 170 
 171 #------------------------------------------------------------------------
 172 # Linker flags
 173 
 174 # statically link libstdc++.so, work with gcc but ignored by g++
 175 STATIC_STDCXX = -Wl,-Bstatic -lstdc++ -Wl,-Bdynamic
 176 
 177 # statically link libgcc and/or libgcc_s, libgcc does not exist before gcc-3.x.
 178 ifneq ("${CC_VER_MAJOR}", "2")
 179 STATIC_LIBGCC += -static-libgcc
 180 endif
 181 
 182 ifeq ($(BUILDARCH), ia64)
 183 LFLAGS += -Wl,-relax
 184 endif
 185 
 186 # Enable linker optimization
 187 LFLAGS += -Xlinker -O1