# defs.gnu - definitions for GNU toolchain builds## modification history# --------------------# 02f,06may02,sn   SPR 76627 - Use CC to link by default# 02e,03may02,tpw  LD_SCRIPT_DOWNLOAD cannot be derived from LD_SCRIPT_RAM.#                  It meshes poorly with scripts not named link.RAM (PPC4xx).# 02d,01may02,sn   Restore TOOL_VENDOR (some people use it)# 02c,24apr02,sn   SPR 75835 - collapse sections into text/data/bss before download# 02b,24apr02,sn   SPR 75123 - always munch -c (avoiding idiosyncratic asm behaviour)# 02a,25apr02,pai  introduced HLL_PREFIX so that prepended underscores could#                  be redefined in architecture/toolchain fragments (SPR 73382)# 01z,21mar02,rbl  adding macro so that project facility can add -fvolatile to#                  bsp files# 01y,19mar02,dat  Adding PIC flags for bootInit.o (72825)# 01x,13mar02,sn   SPR 74080 - added large project support for Diab# 01w,12feb02,sn   removed obsolete refs to GCC_EXEC_PREFIX# 01v,06feb02,t_m  change ranlib to ranlib$(TOOLENV)# 01u,21jan02,sn   removed obsolete WFC flags# 01t,13dec01,jab  added make variable BOOTCONFIG_FLAGS# 01s,05dec01,tpw  Use TGT_DIR to find linker scripts.# 01r,13nov01,tam  changed definition of CC_LIB (repackaging)# 01q,05nov01,rbl  let project facility know about optimization flags# 01p,09nov01,tam  fixed use of OPTION_PASS_TO_LD; renamed TOOL_CONFIG# 01o,02nov01,dat  adding -w to dependency generation options# 01n,30oct01,tpw  Take generic defaults from new fragment defs.common# 01m,29oct01,jab  added new ld script variables# 01l,26oct01,tam  fixed Wl usage after merge# 01k,19oct01,j_s  define cyclic link support macros#		   add TOOL_CONFIG# 01j,24oct01,dat  Relocating tool specific macros# 01i,24oct01,jab  added new dependency generation variables# 01h,23oct01,jab  added variables from defs.default cleanup# 01g,19oct01,jab  added make variables for dependency generation option# 01f,18oct01,dat  Moving tool specific defines out of target/h/make# 01e,12sep01,sn   added LARGE_PROJECT, MUNCH_FLAGS and LD_PARTIAL# 01d,05jun01,mem  Added EXTRACT_HEX_FLAG, EXTRACT_BIN_FLAG, VMA_START & VMA_FLAGS# 01c,13mar01,sn   added defn of OPTION_LANG_ASM# 01b,10jan01,sn   added defn of OPTION_LANG_C# 01a,16oct00,sn   wrote## DESCRIPTION# This file contains default definitions and flags for builds that use the # GNU toolchain.## generic defaults from defs.common come first, so they can be overriddeninclude $(TGT_DIR)/h/tool/common/defs.common# get TOOL_COMMON_DIR, TOOL_DIAB and TOOL_GNU from TOOLTOOL_FAMILY	= gnuTOOL_COMMON_DIR	= $(subst gnu,common,$(TOOL))TOOL_DIAB	= $(subst gnu,diab,$(TOOL))TOOL_GNU	= $(TOOL)# Deprecated, use TOOL_FAMILY insteadTOOL_VENDOR     = gnu# Preprocessor option forcing every input file to be treated as a "C" fileOPTION_LANG_C=-xc# Preprocessor option forcing every input file to be treated as a assembly# file requiring C preprocessingOPTION_LANG_ASM=-xassembler-with-cpp# Library containing compiler support routinesCC_LIB=OPTION_PP		= -EOPTION_PP_AS		= -POPTION_PP_NOLINENO	= -POPTION_PP_COMMENT	= -COPTION_DOLLAR_SYMBOLS	= -fdollars-in-identifiersOPTION_DEPEND		= -M -wOPTION_DEPEND_GEN	= -M -MG -wOPTION_DEPEND_C		= $(OPTION_DEPEND_GEN)OPTION_DEPEND_AS	= $(OPTION_DEPEND)OPTION_NO_WARNINGS	= -wOPTION_ANSI		= -ansiOPTION_OBJECT_ONLY	= -cOPTION_INCLUDE_DIR	= -I# this line has a space at the end ("-o ")OPTION_OBJECT_NAME	= -o OPTION_EXE_NAME		= $(OPTION_OBJECT_NAME)OPTION_DEFINE_MACRO	= -DOPTION_PIC		= -fpicCC_OPTIM_DRIVER		= -fvolatileCC_OPTIM_NORMAL		= -O -fstrength-reduce -fcombine-regsCC_OPTIM_TARGET		= -O -fvolatileCC_WARNINGS_ALL		= -WallCC_WARNINGS_NONE	=CC_COMPILER		= -ansi C++_COMPILER		= -ansi# used by project facilityCC_PROJECT_OPTIMIZE_FLAGS = -O -O1 -O2 -O3 -O4PROJECT_BSP_FLAGS_EXTRA = $(filter -fvolatile,$(CC_OPTIM_TARGET))# For generating PIC code# For T2.2, CC_PIC is only defined for MIPS architecture see defs.mips.# CC_PIC		= $(OPTION_PIC)## toolchain binariesAS              	= as$(TOOLENV)CC              	= cc$(TOOLENV)CF			= CCCXX			= $(CC)LD              	= ld$(TOOLENV)RANLIB          	= ranlib$(TOOLENV)CPP			= $(CC) -E -PCPP_PRINT_MACROS        = $(CPP) -dM -E -pipe $(CC_INCLUDE) $(CC_DEFINES)TCL			= wtxtclOBJCPY	         	= objcopySIZE            	= size$(TOOLENV)NM              	= nm$(TOOLENV)AR              	= ar$(TOOLENV)MUNCH           	= wtxtcl $(WIND_BASE)/host/src/hutils/munch.tcl $(MUNCH_FLAGS)LARGE_PROJECT   	= trueOPTION_INDIRECT_FILE    = @OPTION_NM_INDIRECT_FILE = @MUNCH_FLAGS     	= -c $(TOOLENV)NM_GLOB_FLAGS		= -gHLL_PREFIX              = _ROM_ENTRY               = $(HLL_PREFIX)romInitSYS_ENTRY               = $(HLL_PREFIX)sysInitUSR_ENTRY               = $(HLL_PREFIX)usrInitBOOTCONFIG_FLAGS	=LDFLAGS         	= -X -NLD_ENTRY_OPT		= -eLD_PARTIAL_FLAGS	= -X -r# Wherever possible we use the compiler driver as a frontend to# the linker. In particular this facilitates the GNU -frepo# template repository system. Configurations using GNU Tools# but non-GNU linkers (such as SIMHPPA)  should define# GNU_USE_LD_TO_LINK = yesifeq ($(GNU_USE_LD_TO_LINK),)BASE_LD_PARTIAL_FLAGS   = $(filter-out -r -nostdlib,$(LD_PARTIAL_FLAGS))LD_PARTIAL              = $(CC) -r -nostdlib $(subst -,$(OPTION_PASS_TO_LD)-,$(BASE_LD_PARTIAL_FLAGS))OPTION_PASS_TO_LD       = -Wl,elseLD_PARTIAL            = $(LD) $(LD_PARTIAL_FLAGS)OPTION_PASS_TO_LD     =endif# These are flags to pass to the linker the last time we do a# relocatable link. They never get used by a bootable project# and they only get used once by a downloadable project.LD_SCRIPT_DOWNLOAD      = -T $(TGT_DIR)/h/tool/gnu/ldscripts/link.OUTLD_COLLAPSE_SECTIONS    = $(LD_SCRIPT_DOWNLOAD)LD_PARTIAL_LAST_FLAGS   = $(LD_COLLAPSE_SECTIONS)LD_SCRIPT_RAM	= -T $(TGT_DIR)/h/tool/gnu/ldscripts/link.RAMLD_SCRIPT_ROM	= -T $(TGT_DIR)/h/tool/gnu/ldscripts/link.ROM# for cyclic link supportLD_START_GROUP  	= --start-groupLD_END_GROUP		= --end-groupLD_PARTIAL_START_GROUP	= $(OPTION_PASS_TO_LD)$(LD_START_GROUP)LD_PARTIAL_END_GROUP	= $(OPTION_PASS_TO_LD)$(LD_END_GROUP)LD_LOW_FLAGS    	= -Ttext $(RAM_LOW_ADRS)LD_HIGH_FLAGS   	= -Ttext $(RAM_HIGH_ADRS)RES_LOW_FLAGS   	= -Ttext $(ROM_LINK_ADRS) -Tdata $(RAM_LOW_ADRS)RES_HIGH_FLAGS  	= -Ttext $(ROM_LINK_ADRS) -Tdata $(RAM_HIGH_ADRS)# For 960 IMILD_IMI_ADRS		= -Ttext $(IMI_TEXT_ADRS) -Tdata $(IMI_DATA_ADRS)