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GNUmakefile
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GNUmakefile
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###############################################################################
# G -- GNUmakefile
###############################################################################
# vi: filetype=make:tabstop=8:tw=79
###############################################################################
###############################################################################
#
# Copyright (c) 2019-2023 Jeffrey H. Johnson <trnsz@pobox.com>
#
# Copying and distribution of this file, with or without modification,
# are permitted in any medium without royalty provided the copyright
# notice and this notice are preserved. This file is offered "AS-IS",
# without any warranty.
#
###############################################################################
###############################################################################
#
# Building G with GNU Make 3.81:
#
# * The following options affecting compilation may be set in the shell
# environment or on the make command-line, for example, `make OPTION=1`:
#
# * `CC` : Overrides default C compiler selection, e.g. `CC=clang`
# * `LTO=1` : Enables link-time optimization
# * `LGC=1` : Enables link-time garbage collection (reducing binary size)
# * `OPTFLAGS` : Overrides default optimization flags, e.g. `OPTFLAGS=-Oz`
# * `V=1` : Enables verbose compilation messages
# * `NOSSP=1` : Disables `FORTIFY_SOURCE` and compiler stack protections
# * `STATIC=1` : Attempt statically linking all required libraries
# * `DUMA=1` : Enables support for the *DUMA* memory debugging library
# * `DSTATIC=1`: Attempt statically linking *DUMA* library (needs GNU ld)
# * `DEBUG=1` : Enables debugging code (for development or troubleshooting)
# * `LINE_G=1` : Builds only the line-mode editor (no curses library needed)
# * `TINY_G=1` : Disables features for lower memory use (default for PC DOS)
# * `FULL_G=1` : Overrides `TINY_G` default (enables a fully-featured build)
# * `CURSESLIB`: Overrides curses library selection, e.g. `-lcurses -ltinfo`
# * `NOCURSES` : Disables linking curses (often used for cross compilations)
# * `COLOUR=0` : Disables colours (required for some older curses libraries)
#
###############################################################################
###############################################################################
#
# Building G for legacy systems:
#
# * Commodore Amiga UNIX (AMIX):
# cc -O g.c -o g -lcurses
#
# * HP-UX 9/10:
# cc -O -Ae +Oall +Oaggressive +ESlit -D_XPG4 +u4 -o g -n \
# -Wl,-a,archive g.c -lcur_colr
#
# * ICL DRS/NX (SPARC/Intel):
# cc -Xc -O g.c -dn -o g -lcurses
#
# * Novell/SCO UnixWare:
# cc -Xc -O g.c -dn -o g -lcurses
#
# * Solaris (Intel) Legacy:
# cc -Xc -xO3 -Di386=1 g.c -dn -o g -lcurses
#
# * Solaris (SPARC) Legacy:
# cc -Xc -xO3 -dalign g.c -dn -o g -lcurses
#
# * IBM AIX Legacy (3.25 & 4.12):
# cc -O3 -qflag=e:e -qcompact -qro -qroconst -o g g.c -lcurses
#
# * DG/UX AViiON 4.1 (Motorola):
# cc -Xc -O2 -D_USING_SYSV4_OR_DGUX g.c -dn -o g -lcurses
#
# * Pyramid DC/OSx:
# cc -Xc -WM,-mips2 -WM,-O3 -Wf,-Cs g.c -dn -o g -lcurses
#
# * SCO OpenServer 5:
# cc -O -Xc -o g g.c -lcurses
#
# * DOS (Borland C 5.02, 8086):
# bcc -1- -2- -3- -DDOS=1 -UUNIX -Os -ml -a2 -d g.c
#
# * DOS (Microsoft C/C++ 7.00b/8.00a, MSVC 1.52c, 8086):
# cl /Gs /Gy -DDOS=1 -UUNIX /AL /Os /G0 /c G.C
# link /STACK:32767 G.OBJ,G.EXE,,,,
#
# Definitions for compiling G:
#
# * `-DDEBUG=1` : Enables debugging code (for development or troubleshooting)
# * `-DCOLOUR=0`: Disables colours (required for some older curses libraries)
# * `-DLINE_G=1`: Builds only the line-mode editor (no curses library needed)
# * `-DTINY_G=1`: Disables features for lower memory use (default on for DOS)
# * `-DFULL_G=1`: Overrides `TINY_G` default (enables a fully-featured build)
#
###############################################################################
###############################################################################
# Utilities
CAT ?= cat
CC ?= cc
CHMOD ?= chmod
COMMAND := command
ENV := env
GETCONF ?= getconf
M4 ?= m4
PRINTF ?= printf
MKTEMP ?= $(PRINTF) '%s' 'mkstemp(/tmp/gtmp.XXXXXX)' | $(M4) || exit 1
LN ?= ln
PKGCFG ?= pkg-config
RM ?= rm -f
RMDIR ?= rmdir
SCRIPT ?= script
SSTRIP ?= sstrip
STRIP ?= strip
TEST ?= test
TR ?= tr
TRUE ?= true
UNAME ?= uname
WATWCL ?= wcl
WCL386 ?= wcl386
###############################################################################
# OpenWatcom configuration
WATCOM ?= /opt/watcom
WATBIN ?= binl64
EXTENDER ?= DOS32A
###############################################################################
# DJGPP configuration
DJGPP_GHOME ?= /opt/djgpp
DJGPP_GARCH ?= i586-pc-msdosdjgpp-
DJGPP_CCOMP ?= gcc
DJGPP_ECOFF ?= exe2coff
ifdef DEBUG
DJGPP_STRIP ?= size
else # DEBUG
DJGPP_STRIP ?= strip
endif # !DEBUG
###############################################################################
# CWSDPMI configuration
CWSDPMI_STUB ?= /opt/cwspdmi/cwsdstub.exe
###############################################################################
# Detect operating system
ifndef OS
OS=$(shell $(UNAME) -s 2> /dev/null | \
$(TR) '[:upper:]' '[:lower:]' 2> /dev/null)
endif # OS
ifeq ($(OS),sunos)
OS=$(shell $(UNAME) -o 2> /dev/null | \
$(TR) '[:upper:]' '[:lower:]' 2> /dev/null)
_SUNOS = 1
endif # sunos
###############################################################################
# Static build
ifdef STATIC
STATIC = 1
LDFLAGS += -static
STFLAGS := --static
endif # STATIC
###############################################################################
# pkg-config configuration
ifndef NOCURSES
ifndef LINE_G
ifndef CURSESLIB
CFLAGS += $(shell $(PKGCFG) ncurses --cflags $(STFLAGS) 2> /dev/null \
|| $(PKGCFG) curses --cflags $(STFLAGS) 2> /dev/null)
CURSESLIB += $(shell $(PKGCFG) ncurses --libs $(STFLAGS) 2> /dev/null \
|| $(PKGCFG) curses --libs $(STFLAGS) 2> /dev/null)
endif #!CURSESLIB
endif # !LINE_G
endif # !NOCURSES
###############################################################################
# DUMA build
ifdef DUMA
DUMA = 1
NOSSP = 1
CFLAGS += -DDUMA=1
WGFLAGS += -DDUMA=1
ifdef DSTATIC
DUMALIB += -l:libduma.a
else # DSTATIC
DUMALIB += -lduma
endif # !DSTATIC
endif # DUMA
###############################################################################
# Full build
ifdef FULL_G
CFLAGS += -DFULL_G=1 -DTINY_G=0
WGFLAGS += -DFULL_G=1 -DTINY_G=0
endif # FULL_G
###############################################################################
# Line-mode build
ifdef LINE_G
NOCURSES = 1
TINY =
CFLAGS += -DLINE_G=1
WGFLAGS += -DLINE_G=1
endif # LINE_G
###############################################################################
# Tiny build
ifdef TINY
CFLAGS += -DTINY_G=1
WGFLAGS += -DTINY_G=1
endif # TINY
ifdef TINY_G
ifndef TINY
CFLAGS += -DTINY_G=1
WGFLAGS += -DTINY_G=1
endif # !TINY
endif # TINY_G
###############################################################################
# Disable colour
ifeq "$(COLOUR)" "0"
CFLAGS += -DCOLOUR=0
WGFLAGS += -DCOLOUR=0
endif # !COLOUR
###############################################################################
# Verbose mode
ifdef V
VERBOSE = set -x
else # V
VERBOSE = set +x
endif # !V
###############################################################################
# Stack protection
ifdef DEBUG
NOSSP = 1
endif # DEBUG
ifdef NOSSP
ifeq ($(_SUNOS),1)
STACK_FLAGS ?= -U_FORTIFY_SOURCE
else # _SUNOS
STACK_FLAGS ?= -fno-stack-protector -U_FORTIFY_SOURCE
endif # !_SUNOS
else # NOSSP
STACK_FLAGS ?= -D_FORTIFY_SOURCE=2
endif # !NOSSP
###############################################################################
# Debugging
ifdef DEBUG
CFLAGS += -Wall -Wextra $(STACK_FLAGS) -DDEBUG=1 -g
else # DEBUG
ifeq ($(_SUNOS),1)
OPTFLAGS ?= -O
endif # _SUNOS
OPTFLAGS ?= -Os
CFLAGS += $(OPTFLAGS) $(STACK_FLAGS) -Wno-int-to-pointer-cast
endif # !DEBUG
###############################################################################
# Link-time optimization and garbage collection
ifdef LTO
CFLAGS += -flto=auto
LDFLAGS += -flto=auto
endif # LTO
ifdef LGC
CFLAGS += -fdata-sections -ffunction-sections
LDFLAGS += -Wl,--gc-sections
ifdef DEBUG
LDFLAGS += -Wl,--print-gc-sections
endif # DEBUG
endif # LGC
###############################################################################
# Libraries
ifeq ($(OS),aix)
CFLAGS += -I/opt/freeware/include
LDFLAGS += -L/opt/freeware/lib
ifndef LINE_G
ifeq ($(CURSESLIB),)
CURSESLIB := -lncurses
endif # !CURSESLIB
endif # !LINE_G
else # aix
ifndef LINE_G
ifeq ($(CURSESLIB),)
CURSESLIB ?= -lcurses
endif # !CURSESLIB
endif # !LINE_G
endif # !aix
ifndef NOCURSES
ifndef LINE_G
LDFLAGS += $(CURSESLIB)
endif # !LINE_G
endif # !NOCURSES
###############################################################################
# Architectures
ifeq ($(OS),aix)
MAIXBITS ?= $(shell $(COMMAND) -p $(GETCONF) KERNEL_BITMODE \
2> /dev/null || $(PRINTF) '%s' "32")
ifneq (,$(findstring gcc,$(CC))) # gcc (GNU C)
CFLAGS += -maix$(MAIXBITS)
LDFLAGS += -maix$(MAIXBITS) -Wl,-b$(MAIXBITS)
endif # gcc
ifneq (,$(findstring clang,$(CC))) # xlclang/ibm-clang (IBM Open XL)
CFLAGS += -m$(MAIXBITS)
LDFLAGS += -m$(MAIXBITS) -Wl,-b$(MAIXBITS)
endif # clang
ifneq (,$(findstring gxlc,$(CC))) # gxlc (IBM XL C)
CFLAGS += -m$(MAIXBITS)
LDFLAGS += -m$(MAIXBITS) -Wl,-b$(MAIXBITS)
endif # gxlc
STRARGS = -X$(MAIXBITS)
endif # aix
###############################################################################
# Files
SRC = g.c
OUT ?= g
###############################################################################
# Standard Compilation
ifdef DUMA
LDFLAGS += $(DUMALIB)
endif # DUMA
.PHONY: all
.NOTPARALLEL: all g
$(OUT) all:
$(OUT): $(SRC)
ifneq ($(V),1)
-@$(PRINTF) '\r\t\t$(CC):\t\t%s\n' $<
endif # !V
@$(VERBOSE); $(CC) $(CFLAGS) $(SRC) -o $(OUT) $(LDFLAGS)
###############################################################################
# OpenWatcom Debugging
ifdef DEBUG
WATDBG = -d3 -DDEBUG=1
else # DEBUG
WATDBG = -d0 -s -zq -oabls
endif # !DEBUG
###############################################################################
# OpenWatcom Compilation: 16-bit DOS, 8086 (Real mode)
.PHONY: $(OUT)86 owc16
.NOTPARALLEL: $(OUT)86 owc16 $(OUT)86.exe
$(OUT)86 owc16 $(OUT)86.exe: g.lkr
ifneq ($(V),1)
-@$(PRINTF) '\r\t\t$(WATWCL):\t\t%s\n' "$(SRC)"
endif # !V
@$(VERBOSE); $(RM) -f "g.o" 2> /dev/null || $(TRUE)
@$(VERBOSE); $(RM) -f "g86.exe" 2> /dev/null || $(TRUE)
@$(VERBOSE); $(ENV) WATCOM="$(WATCOM)" INCLUDE="$(WATCOM)/h" \
PATH="$(WATCOM)/$(WATBIN):$${PATH:?}" $(WATWCL) -k32767 \
-bcl=DOS -DDOS=1 -DASM86=0 -0 -ml -fpi @g.lkr $(WGFLAGS) \
$(WATDBG) -zp2 -j -s -fe=$(OUT)86.exe $(SRC) && \
$(RM) -f "./g.o" 2> /dev/null
###############################################################################
# OpenWatcom Compilation: 16-bit DOS, 80386 (Real mode)
.PHONY: $(OUT)386r owc386r
.NOTPARALLEL: $(OUT)386r owc386r $(OUT)386r.exe
$(OUT)386r owc386r $(OUT)386r.exe: g.lkr
ifneq ($(V),1)
-@$(PRINTF) '\r\t\t$(WATWCL):\t\t%s\n' "$(SRC)"
endif # !V
@$(VERBOSE); $(RM) -f "g.o" 2> /dev/null || $(TRUE)
@$(VERBOSE); $(RM) -f "g386r.exe" 2> /dev/null || $(TRUE)
@$(VERBOSE); $(ENV) WATCOM="$(WATCOM)" INCLUDE="$(WATCOM)/h" \
PATH="$(WATCOM)/$(WATBIN):$${PATH:?}" $(WATWCL) -k32767 \
-bcl=DOS -DDOS=1 -DASM86=1 -3 -ml -fpi @g.lkr $(WGFLAGS) \
$(WATDBG) -zp2 -j -s -fe=$(OUT)386r.exe $(SRC) && \
$(RM) -f "./g.o" 2> /dev/null
###############################################################################
# OpenWatcom Compilation: 32-bit DOS, 386 (Protected mode)
.PHONY: $(OUT)386p owc386p
.NOTPARALLEL: $(OUT)386p owc386p $(OUT)386p.exe
$(OUT)386p owc386p $(OUT)386p.exe: g.lkr
ifneq ($(V),1)
-@$(PRINTF) '\r\t\t$(WCL386):\t\t%s\n' "$(SRC)"
endif # !V
@$(VERBOSE); $(RM) -f "./g.o" 2> /dev/null || $(TRUE)
@$(VERBOSE); $(RM) -f "./g386p.exe" 2> /dev/null || $(TRUE)
@$(VERBOSE); $(ENV) WATCOM="$(WATCOM)" INCLUDE="$(WATCOM)/h" \
PATH="$(WATCOM)/$(WATBIN):$(WATCOM)/binw:$${PATH:?}" $(WCL386) -s \
-l=$(EXTENDER) -bt=DOS -DDOS=1 -DASM86=0 -3r -mf -j -fpi @g.lkr \
-k32767 $(WATDBG) -zp2 -DWCL386=1 -fe=$(OUT)386p.exe $(WGFLAGS) \
$(SRC) && $(RM) -f "./g.o" 2> /dev/null
###############################################################################
# OpenWatcom Compilation: 16-bit OS/2, 286 (Protected mode)
.PHONY: $(OUT)286p owc286p
.NOTPARALLEL: $(OUT)286p owc286p $(OUT)286p.exe
$(OUT)286p owc286p $(OUT)286p.exe: gos2.lkr
ifneq ($(V),1)
-@$(PRINTF) '\r\t\t$(WATWCL):\t\t%s\n' "$(SRC)"
endif # !V
@$(VERBOSE); $(RM) -f "./g.o" 2> /dev/null || $(TRUE)
@$(VERBOSE); $(RM) -f "./g286p.exe" 2> /dev/null || $(TRUE)
@$(VERBOSE); $(ENV) WATCOM="$(WATCOM)" \
INCLUDE="$(WATCOM)/h:$(WATCOM)/h/os21x:$${WATCOM_PDC_INCLUDE:-.}" \
PATH="$(WATCOM)/$(WATBIN):$${PATH:?}" $(WATWCL) \
-bcl=OS2 -UDOS -DUNIX=1 -2 -ml -fpi @gos2.lkr -k32767 -s \
$(WATDBG) -D_TIMESPEC_DEFINED -za -zp2 -j -fe=$(OUT)286p.exe \
$(WGFLAGS) $(SRC) $${WATCOM_PDC_LIBRARY:-} && \
$(RM) -f "./g.o" 2> /dev/null
###############################################################################
# OpenWatcom Compilation: 32-bit OS/2, 386 (Protected mode)
.PHONY: $(OUT)os2p owcos2p
.NOTPARALLEL: $(OUT)os2p owcos2p $(OUT)os2p.exe
$(OUT)os2p owcos2p $(OUT)os2p.exe: gos2.lkr
ifneq ($(V),1)
-@$(PRINTF) '\r\t\t$(WCL386):\t\t%s\n' "$(SRC)"
endif # !V
@$(VERBOSE); $(RM) -f "./g.o" 2> /dev/null || $(TRUE)
@$(VERBOSE); $(RM) -f "./gos2p.exe" 2> /dev/null || $(TRUE)
@$(VERBOSE); $(ENV) WATCOM="$(WATCOM)" \
INCLUDE="$(WATCOM)/h:$(WATCOM)/h/os2:$${WATCOM_PDC_INCLUDE:-.}" \
PATH="$(WATCOM)/$(WATBIN):$${PATH:?}" $(WCL386) \
-bcl=OS2V2 -UDOS -DUNIX=1 -3r -mf -fpi @gos2.lkr -k32767 -s \
$(WATDBG) -D_TIMESPEC_DEFINED -zp2 -j -fe=$(OUT)os2p.exe \
$(WGFLAGS) $(SRC) $${WATCOM_PDC_LIBRARY:-} && \
$(RM) -f "./g.o" 2> /dev/null
###############################################################################
# DJGPP Compilation: 32-bit DOS, 386 (Protected mode)
CFLAGZ := $(patsubst %-flto=auto,%-flto,$(CFLAGS))
LDFLAGZ := $(patsubst %-flto=auto,%-flto,$(LDFLAGS))
.PHONY: $(OUT)386 djgpp
$(OUT)386 djgpp $(OUT)386.exe: \
$(CWSDPMI_STUB) \
$(DJGPP_GHOME)/bin/$(DJGPP_GARCH)$(DJGPP_CCOMP) \
$(DJGPP_GHOME)/bin/$(DJGPP_GARCH)$(DJGPP_STRIP)
ifneq ($(V),1)
-@$(PRINTF) '\r\t\t$(DJGPP_CCOMP):\t\t%s\n' "$(SRC)"
endif # !V
@$(VERBOSE); $(RM) -f "gt" 2> /dev/null || $(TRUE)
@$(VERBOSE); $(RM) -f "gt.o" 2> /dev/null || $(TRUE)
@$(VERBOSE); $(RM) -f "g.exe" 2> /dev/null || $(TRUE)
@$(VERBOSE); $(RM) -f "g386.exe" 2> /dev/null || $(TRUE)
@$(VERBOSE); "$(DJGPP_GHOME)/bin/$(DJGPP_GARCH)$(DJGPP_CCOMP)" \
-march=i386 -Wno-attributes $(CFLAGZ) $(SRC) -o gt.exe $(LDFLAGZ) && \
$(RM) -f "./gt" && \
"$(DJGPP_GHOME)/bin/$(DJGPP_GARCH)$(DJGPP_STRIP)" -s "./gt.exe" && \
$(DJGPP_ECOFF) "./gt.exe" && $(RM) -f "./gt.exe" && \
$(CAT) "$(CWSDPMI_STUB)" "./gt" > "./$(OUT)386.exe" && \
$(RM) -f "./gt" 2> /dev/null && $(CHMOD) a+x "./$(OUT)386.exe"
###############################################################################
# Strip
.PHONY: strip
strip: $(OUT)
ifneq ($(V),1)
-@$(TEST) -f ./$(OUT) && \
$(PRINTF) '\r\t\t$(STRIP):\t\t%s\n' $(OUT) || $(TRUE)
endif # !V
-@$(VERBOSE); $(STRIP) $(STRARGS) $(OUT) 2> /dev/null || $(TRUE)
-@$(VERBOSE); $(STRIP) $(STRARGS) -s $(OUT) 2> /dev/null || $(TRUE)
-@$(VERBOSE); $(STRIP) $(STRARGS) -R .gnu.build.attributes \
-R .note.gnu.build-id \
-R .note.gnu.property \
-R .eh_frame \
-R .eh_frame_hdr \
-R .got \
-R .SUNW_ctf \
-R .jcr \
-R .note.netbsd.pax \
$(OUT) 2> /dev/null || $(TRUE)
-@$(VERBOSE); $(SSTRIP) -z $(OUT) 2> /dev/null || $(TRUE)
###############################################################################
# Clean
.PHONY: clean distclean
clean distclean:
ifneq ($(V),1)
-@$(PRINTF) '\r\t\t$(RM):\t\t%s\n' "(output)" || $(TRUE)
endif # !V
-@$(VERBOSE); $(RM) -f "./gt" 2> /dev/null || $(TRUE)
-@$(VERBOSE); $(RM) -f "./gt.o" 2> /dev/null || $(TRUE)
-@$(VERBOSE); $(RM) -f "./gt.exe" 2> /dev/null || $(TRUE)
-@$(VERBOSE); $(RM) -f "./$(OUT)" 2> /dev/null || $(TRUE)
-@$(VERBOSE); $(RM) -f "./$(OUT).o" 2> /dev/null || $(TRUE)
-@$(VERBOSE); $(RM) -f "./$(OUT).exe" 2> /dev/null || $(TRUE)
-@$(VERBOSE); $(RM) -f "./$(OUT).err" 2> /dev/null || $(TRUE)
-@$(VERBOSE); $(RM) -f "./$(OUT)86.exe" 2> /dev/null || $(TRUE)
-@$(VERBOSE); $(RM) -f "./$(OUT)386.exe" 2> /dev/null || $(TRUE)
-@$(VERBOSE); $(RM) -f "./$(OUT)286p.exe" 2> /dev/null || $(TRUE)
-@$(VERBOSE); $(RM) -f "./$(OUT)os2p.exe" 2> /dev/null || $(TRUE)
-@$(VERBOSE); $(RM) -f "./$(OUT)386p.exe" 2> /dev/null || $(TRUE)
-@$(VERBOSE); $(RM) -f "./$(OUT)386r.exe" 2> /dev/null || $(TRUE)
-@$(VERBOSE); $(RM) -f "../cppcheck.out"/* 2> /dev/null || $(TRUE)
-@$(VERBOSE); $(RMDIR) "../cppcheck.out" 2> /dev/null || $(TRUE)
###############################################################################
# Cppcheck
.PHONY: cppcheck
cppcheck: g.c ../test/cppcheck.sh
@$(VERBOSE); $(TEST) -x "$$($(COMMAND) -v cppcheck 2> /dev/null)" || \
{ $(PRINTF) '%s\n' "Error: No cppcheck found in PATH."; exit 1; }
@$(VERBOSE); export CC="$(CC)" && $(COMMAND) -p $(ENV) \
PATH="$$($(COMMAND) -p $(ENV) $(GETCONF) PATH):$${PATH:?}" \
"sh" -c "../test/cppcheck.sh" 2>&1
###############################################################################
# Test
# WARNING: GNU and Linux-isms abound; must be adaptated to your local system!
.PHONY: test check
test check: g.c ../test/build.sh
@$(VERBOSE); export BUILD_LOG="$$($(MKTEMP))" && \
$(TEST) -f "$${BUILD_LOG:?}" && \
$(SCRIPT) -q -e -f -c "$(COMMAND) -p $(ENV) \
PATH=\"$$($(COMMAND) -p $(ENV) $(GETCONF) PATH):$${PATH:?}\" \
\"sh\" -c \"../test/build.sh\" 2>&1" "$${BUILD_LOG:?}" && { \
$(PRINTF) '%s\n' '## Tests completed successfully'; \
$(RM) "$${BUILD_LOG:?}"; } || { \
$(PRINTF) '\n%s\n' \
"## TEST ERROR - Build log saved to \"$${BUILD_LOG:?}\""; \
exit 1; }
###############################################################################