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fix Makefile and README.md for 2019/adamovsky

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Landon Curt Noll committed 2023-03-25 01:40:54 -07:00
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2019/adamovsky/Makefile
+148 -340
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@@ -1,14 +1,41 @@
#!/usr/bin/env make #!/usr/bin/env make
# #
# 2019 makefile # IOCCC 2019 winning entry - adamovsky
################################################################################
# #
# This work by Landon Curt Noll, Simon Cooper, and Leonid A. Broukhis # Regarding individual entries:
# is licensed under: #
# IOCCC winning entry code may not work on your system. Even with standards,
# conditions and build environments change, especially when it comes to more
# extreme code such you might find in an IOCCC winner. Moreover, what was
# allowed and liked in one IOCCC contest may no longer be liked/allowed in
# later IOCCC years.
#
# Corrections on winning author and fixing typos in remarks are VERY WELCOME.
#
# GitHub pull requests are welcome:
#
# If you have a patch that might make running an entry work in modern Unix-like
# environments, please create a GitHub pull request for the IOCCC judges to
# consider.
#
# Suggestions and corrections regarding Makefiles, winning author information,
# fixing typos in remarks, and code patches are welcome via opening a GitHub
# issue or better yet, by creating a GitHub pull request for the IOCCC judges
# to consider. To form a GitHub issue or GitHub pull, please visit:
#
# https://github.com/ioccc-src/winner
#
################################################################################
# This work by Landon Curt Noll and Leonid A. Broukhis is licensed under:
# #
# Creative Commons Attribution-ShareAlike 3.0 Unported License. # Creative Commons Attribution-ShareAlike 3.0 Unported License.
# #
# See: http://creativecommons.org/licenses/by-sa/3.0/ # See: http://creativecommons.org/licenses/by-sa/3.0/
############################# #############################
# shell used by this Makefile # shell used by this Makefile
############################# #############################
@@ -19,262 +46,7 @@ SHELL= bash
# common tool locations # common tool locations
####################### #######################
# #
A2P= a2p include ../../var.mk
AR= ar
ASA= asa
AT= at
ATQ= atq
ATRM= atrm
AWK= awk
BANNER= banner
BASE64= base64
BASENAME= basename
BATCH= batch
BC= bc
BINHEX= binhex
BISON= bison
BUNZIP2= bunzip2
BZCAT= bzcat
BZCMP= bzcmp
BZDIFF= bzdiff
BZEGREP= bzegrep
BZFGREP= bzfgrep
BZGREP= bzgrep
BZIP2= bzip2
BZLESS= bzless
BZMORE= bzmore
C2PH= c2ph
C89= c89
C99= c99
CAL= cal
CALC= calc
CAT= cat
CD= cd
CHFLAGS= chflags
CHGRP= chgrp
CHMOD= chmod
CKSUM= cksum
CLANG= clang
CLANG_PLUSPLUS= clang++
CLEAR= clear
CMP= cmp
COL= col
COLLDEF= colldef
COLRM= colrm
COLUMN= column
COMPRESS= compress
CP= cp
CPIO= cpio
CPP= cpp
CRC32= crc32
CSH= csh
CSPLIT= csplit
CURL= curl
CUT= cut
C_PLUSPLUS= c++
C_PLUSPLUS_FILT= c++filt
DATE= date
DC= dc
DD= dd
DF= df
DIFF3= diff3
DIFF= diff
DIG= dig
DIRNAME= dirname
ED= ed
EGREP= egrep
ENV= env
EQN= eqn
ETAGS= etags
EXPECT= expect
EXPR= expr
FALSE= false
FGREP= fgrep
FILE= file
FIND2PERL= find2perl
FIND= find
FLEX= flex
FLEX_PLUSPLUS= flex++
FMT= fmt
FOLD= fold
FS_USAGE= fs_usage
FUNZIP= funzip
FUSER= fuser
GCC= gcc
GDIFFMK= gdiffmk
GENCAT= gencat
GENSTRINGS= genstrings
GETOPT= getopt
GETOPTS= getopts
GNUMAKE= gnumake
GREP= grep
GROFF= groff
GROFFER= groffer
GROG= grog
GROPS= grops
GROTTY= grotty
GUNZIP= gunzip
GVIM= gvim
GZCAT= gzcat
GZEXE= gzexe
GZIP_PROG= gzip
G_PLUSPLUS= g++
H2PH= h2ph
H2XS= h2xs
HASH= hash
HEAD= head
HOSTNAME_PROG= hostname
ICONV= iconv
ID= id
INDENT= indent
INFO= info
JOT= jot
KILL= kill
KSH= ksh
LAST= last
LD= ld
LEX= len
LINK= link
LN= ln
LS= ls
M4= m4
MAKE= make
MAN= man
MKDIR= mkdir
MKFIFO= mkfifo
MKTEMP= mktemp
MV= mv
NANO= nano
NASM= nasm
NEQN= neqn
NICE= nice
NL= nl
NM= nm
NOHUP= nohup
NROFF= nroff
NSLOOKUP= nslookup
OD= od
OPENSSL= openssl
PASTE= paste
PATCH= patch
PATHCHK= pathchk
PAX= pax
PERL= perl
PICO= pico
PR= pr
PRINTENV= printenv
PS= ps
PTAR= ptar
PTARDIFF= ptardiff
PTARGREP= ptargrep
PWD= pwd
PYDOC= pydoc
PYTHON= python
PYTHONW= pythonw
READLINK= readlink
RENICE= renice
RESET= reset
REV= rev
RI= ri
RM= rm
RMDIR= rmdir
RSYNC= rsync
RUBY= ruby
RVIM= rvim
SAY= say
SCP= scp
SCREEN= screen
SCRIPT= script
SDIFF= sdiff
SED= sed
SEQ= seq
SFTP= sftp
SH= sh
SHA1= sha1
SHA= sha
SHAR= shar
SHASUM5_18= shasum5.18
SHASUM= shasum
SIZE= size
SLEEP= sleep
SORT= sort
SSH= ssh
STAT= stat
STRIP= strip
STTY= stty
SUM= sum
SYNC= sync
TABS= tabs
TAIL= tail
TAR= tar
TEE= tee
TEST= test
TFTP= tftp
TIDY= tidy
TIME= time
TOP= top
TOUCH= touch
TPUT= tout
TPUT= tput
TR= tr
TROFF= troff
TRUE= true
TSET= tset
TSORT= tsort
UL= ul
UNAME= uname
UNCOMPRESS= uncompress
UNEXPAND= unexpand
UNIFDEF= unifdef
UNIFDEFALL= unifdefall
UNIQ= uniq
UNITS= units
UNLINK= unlink
UNZIP= unzip
UNZIPSFX= unzipsfx
UPTIME= uptime
UUDECODE= uudecode
UUENCODE= uuencode
UUIDGEN= uuidgen
VI= vi
VIEW= view
VIM= vim
VIMDIFF= vimdiff
W= w
WAIT4PATH= wait4path
WAIT= wait
WC= wc
WHAT= what
WHATIS= whatis
WHICH= which
WHO= who
WHOAMI= whoami
WHOIS= whois
WRTIE= write
XAR= xar
XARGS= xargs
XATTR= xattr
XXD= xxd
YACC= yacc
YES= yes
ZCAT= zcat
ZCMP= zcmp
ZDIFF= zdiff
ZEGREP= zegrep
ZFGREP= zfgrep
ZFORCE= zforce
ZGREP= zgrep
ZIP= zip
ZIPCLOAK= zipcloak
ZIPGREP= zipgrep
ZIPINFO= zipinfo
ZIPNOTE= zipnote
ZIPSPLIT= zipsplit
ZLESS= zless
ZMORE= zmore
ZNEW= znew
ZPRINT= zprint
ZSH= zsh
# Set X11_LIBDIR to the directory where the X11 library resides # Set X11_LIBDIR to the directory where the X11 library resides
# #
@@ -288,29 +60,25 @@ X11_LIBDIR= /opt/X11/lib
#X11_INCDIR= /usr/X11/include #X11_INCDIR= /usr/X11/include
X11_INCDIR= /opt/X11/include X11_INCDIR= /opt/X11/include
# Compiler warnings # Common C compiler warnings to silence
#
#CWARN=
#CWARN= -Wall
#CWARN= -Wall -Wextra
CWARN= -Wall -Wextra -pedantic ${CSILENCE}
#CWARN= -Wall -Wextra -Weverything
#CWARN= -Wall -Wextra -Weverything -pedantic
#CWARN= -Wall -Wextra -Weverything -pedantic ${CSILENCE}
# Silence warnings that ${CWARN} would normally complain about
# #
#CSILENCE= #CSILENCE=
#CSILENCE= -Wno-implicit-int CSILENCE= -Wno-trigraphs -Wno-comment
CSILENCE=-Wno-format -Wno-implicit-function-declaration -Wno-newline-eof -Wno-shift-op-parentheses -Wno-unsequenced -Wno-trigraphs -Wno-comment
# compiler standard # Common C compiler warning flags
#
#CWARN= ${CSILENCE}
#CWARN= -Wall ${CSILENCE}
#CWARN= -Wall -Wextra ${CSILENCE}
CWARN= -Wall -Wextra -pedantic ${CSILENCE}
# Compiler standard
# #
#CSTD= #CSTD=
#CSTD= -ansi #CSTD= -ansi
CSTD= -std=c11 CSTD= -std=gnu17
# compiler bit architecture # Compiler bit architecture
# #
# Some entries require 32-bitness: # Some entries require 32-bitness:
# ARCH= -m32 # ARCH= -m32
@@ -322,20 +90,21 @@ CSTD= -std=c11
# #
ARCH= ARCH=
# defines that are needed to compile # Defines that are needed to compile
# #
CDEFINE= CDEFINE=
#CDEFINE= -DIOCCC=26 #CDEFINE= -DIOCCC
# include files that are needed to compile # Include files that are needed to compile
# #
CINCLUDE= CINCLUDE=
#CINCLUDE= -include stdlib.h #CINCLUDE= -include stdlib.h
#CINCLUDE= -include stdio.h #CINCLUDE= -include stdio.h
#CINCLUDE= -include stdlib.h -include stdio.h #CINCLUDE= -include stdlib.h -include stdio.h
#CINCLUDE= -I ${X11_INCDIR} #CINCLUDE= -I ${X11_INCDIR} -I ${X11_INCDIR}/X11
#CINCLUDE= `${SDL2_CONFIG} --cflags`
# optimization # Optimization
# #
# Most compiles will safely use -O2. Some can use only -O1 or -O. # Most compiles will safely use -O2. Some can use only -O1 or -O.
# A few compilers have broken optimizers or this entry make break # A few compilers have broken optimizers or this entry make break
@@ -348,69 +117,96 @@ CINCLUDE=
#OPT= -O2 #OPT= -O2
OPT= -O3 OPT= -O3
# default flags for ANSI C compilation # Default flags for ANSI C compilation
# #
CFLAGS= ${CSTD} ${CWARN} ${ARCH} ${CDEFINE} ${CINCLUDE} ${OPT} CFLAGS= ${CSTD} ${CWARN} ${ARCH} ${CDEFINE} ${CINCLUDE} ${OPT}
# Libraries needed to build # Libraries needed to build
# #
LIBS= LIBS=
#LIBS= -L ${X11_LIBDIR} #LIBS= -lm
#LIBS= -L ${X11_LIBDIR} -lX11
#LIBS= `${SDL2_CONFIG} --libs`
# ANSI compiler # C compiler to use
#
# Set CC to the name of your ANSI compiler.
#
# Some entries seem to need gcc. If you have gcc, set
# both CC and MAY_NEED_GCC to gcc.
#
# If you do not have gcc, set CC to the name of your ANSI compiler, and
# set MAY_NEED_GCC to either ${CC} (and hope for the best) or to just :
# to disable such programs.
# #
CC= cc CC= cc
#CC=clang #CC=clang
MAY_NEED_GCC= gcc #CC=gcc
# Compiler add-ons or replacements for clang only
#
ifeq ($(CC),clang)
#
CSILENCE+= -Wno-missing-noreturn -Wno-missing-prototypes \
-Wno-missing-variable-declarations -Wno-poison-system-directories \
-Wno-trigraphs -Wno-unused-macros -Wno-shorten-64-to-32
#
CWARN+= -Weverything
#
endif
# Specific add-ons or replacements for gcc only
#
ifeq ($(CC),gcc)
#
#CSILENCE+=
#
#CWARN+=
#
endif
############################## ##############################
# Special flags for this entry # Special flags for this entry
############################## ##############################
# #
OBJ= prog.o iocccsize_2018.o prog2.o ENTRY= adamovsky
PROG= prog
#
OBJ= ${PROG}.o iocccsize_2018.o ${PROG}2.o
CSRC= ${${PROG}}.o
DATA= DATA=
TARGET= prog iocccsize_2018 prog2 identify.unl TARGET= ${PROG} iocccsize_2018 ${PROG}2 identify.unl
# #
ALT_OBJ= ALT_OBJ=
ALT_TARGET= ALT_TARGET=
# This entry requires trigraphs
#
CFLAGS+= -trigraphs
################# #################
# build the entry # build the entry
################# #################
# #
all: ${TARGET} ${DATA} all: data ${TARGET}
@${TRUE} @${TRUE}
prog: prog.c .PHONY: all alt data everything clean clobber install \
love haste waste maker easter_egg sandwich \
supernova deep_magic magic charon pluto
${PROG}: ${PROG}.c
${CC} ${CFLAGS} $< -o $@ ${LIBS} ${CC} ${CFLAGS} $< -o $@ ${LIBS}
iocccsize_2018: iocccsize_2018.c iocccsize_2018: iocccsize_2018.c
${CC} -pedantic -Wall -Wextra -std=c11 iocccsize_2018.c -o $@ ${CC} -pedantic -Wall -Wextra -std=c11 iocccsize_2018.c -o $@
prog2: iocccsize_2018 ${PROG}2: iocccsize_2018
./iocccsize_2018 -r <prog.c 2>/dev/null | ${TAIL} -n -1 | ${CC} -include stdio.h -x c -o $@ - ./iocccsize_2018 -r <${PROG}.c 2>/dev/null | ${TAIL} -n -1 | ${CC} -include stdio.h -x c -o $@ -
identify.unl: prog2 identify.unl: ${PROG}2
./prog2 >identify.unl ./${PROG}2 >identify.unl
@echo @echo
identify: prog identify.unl identify: ${PROG} identify.unl
@./prog identify.unl @./${PROG} identify.unl
# alternative executable # alternative executable
# #
alt: ${ALT_TARGET} alt: data ${ALT_TARGET}
@${TRUE} @${TRUE}
# data files # data files
@@ -418,15 +214,21 @@ alt: ${ALT_TARGET}
data: ${DATA} data: ${DATA}
@${TRUE} @${TRUE}
# both all and alt
#
everything: all alt
############### ###############
# utility rules # utility rules
############### ###############
# #
everything: all alt
clean: clean:
${RM} -f ${OBJ} ${ALT_OBJ} ${RM} -f ${OBJ} ${ALT_OBJ}
@-if [ -f indent.c ]; then \
echo ${RM} -f indent.c; \
${RM} -f indent.c; \
fi
clobber: clean clobber: clean
${RM} -f ${TARGET} ${ALT_TARGET} ${RM} -f ${TARGET} ${ALT_TARGET}
@@ -435,20 +237,28 @@ clobber: clean
echo 'ate sandwich'; \ echo 'ate sandwich'; \
fi fi
nuke: clobber
@${TRUE}
dist_clean: nuke
@${TRUE}
install: install:
@echo "Surely you are performing, Dr. May!" @echo "Dr. Spock says that is not logical!"
@${TRUE} @${TRUE}
# backwards compatibility # you may be able to misunderstand the source by reading indent.c
# #
build: all indent.c: ${PROG}.c
@${TRUE} @if which "${GINDENT}" >/dev/null 2>&1; then \
echo ${RM} -f $@; \
${RM} -f $@; \
echo "${GINDENT} < $< > $@"; \
${GINDENT} < $< > $@; \
elif which "${INDENT}" >/dev/null 2>&1; then \
echo ${RM} -f $@; \
${RM} -f $@; \
echo "${INDENT} < $< > $@"; \
${INDENT} < $< > $@; \
else \
echo "no intent tool found, ident $< yourself, sorry"; \
echo "exit 1"; \
exit 1; \
fi
################## ##################
@@ -467,22 +277,19 @@ waste:
@echo 'haste' @echo 'haste'
@${TRUE} @${TRUE}
make: maker:
@echo 'Attend a maker faire' @echo 'Participate in a maker faire'
@${TRUE} @${TRUE}
easter_egg: easter_egg:
@echo you expected to often mis-understand this $${RANDOM} magic @echo "you expected to often misunderstand this $${RANDOM} magic"
@echo chongo '<was here>' "/\\oo/\\" @echo "chongo '<was here>' /\\oo/\\"
@echo Eggy @echo "Eggy"
fabricate fashion form frame manufacture produce: make sandwich: easter_egg
@${TRUE}
sandwich:
@if [ `id -u` -eq 0 ]; then \ @if [ `id -u` -eq 0 ]; then \
echo 'Okay.'; \ echo 'Okay.'; \
echo $${RANDOM}`date +%s`$${RANDOM} > $@; \ echo "$${RANDOM}`date +%s`$${RANDOM}" > $@; \
else \ else \
echo 'What? Make it yourself.'; \ echo 'What? Make it yourself.'; \
exit 1; \ exit 1; \
@@ -492,18 +299,19 @@ sandwich:
# as well as the West Coast Computer Faire and # as well as the West Coast Computer Faire and
# you might be confused different. :-) # you might be confused different. :-)
# #
supernova: nuke supernova: sandwich
@-if [ -r .code_anal ]; then \ @-if [ -r .code_anal ]; then \
${RM} -f .code_anal_v6; \ ${RM} -f .code_anal_v6; \
else \ else \
echo "planet deniers, like some members of the IAU, are so cute when they try to defend their logic"; \ echo "planet deniers, like some members of the IAU, are so cute when they try to defend their logic"; \
fi fi
@echo A $@ helps ${MAKE} the elements that help form planets @echo "A $@ helps ${MAKE} the elements that help form planets"
@${TRUE} @${TRUE}
deep_magic: deep_magic: supernova
@-if [ -r .code_anal ]; then \ @-if [ -r .code_anal ]; then \
ccode_analysis --deep_magic fc6b6af226b7cc598de3d48fc20ed0bd54f7b4f7f0f651a32b9cf8345b2a3b3f --FNV1a_hash_512_bit "prog"; \ ccode_analysis --deep_magic 7889066cdbdf09b0408021754586e895be641cc9be29e7eafd3ca65359541f17 \
--FNV1a_hash_512_bit -v2 "${PROG}" "${PROG}.c"; \
else \ else \
echo "Wrong! Do it again!"; \ echo "Wrong! Do it again!"; \
sleep 2; \ sleep 2; \
@@ -515,7 +323,7 @@ deep_magic:
magic: deep_magic magic: deep_magic
@-if [ -r .code_anal ]; then \ @-if [ -r .code_anal ]; then \
ccode_analysis --level 391581 --mode 216193 --FNV1a_hash_512_bit "prog"; \ ccode_analysis --level 20003 --mode 5717175 --FNV1a_hash_512_bit -v2 "${PROG}" "${PROG}.c"; \
else \ else \
echo "If you don't eat yer meat, you can't have any pudding!"; \ echo "If you don't eat yer meat, you can't have any pudding!"; \
echo "How can you have any pudding if you don't eat yer meat?!"; \ echo "How can you have any pudding if you don't eat yer meat?!"; \
@@ -524,14 +332,14 @@ magic: deep_magic
# The IOCCC resident astronomer states # The IOCCC resident astronomer states
# #
charon: supernova charon: magic
@echo $@ is a dwarf planet @echo "$@ is a dwarf planet"
@echo dwarf is a type of planet @echo "dwarf is a type of planet"
@echo therefore IAU, $@ is a planet @echo "therefore IAU, $@ is a planet"
pluto: supernova pluto: charon
${MAKE} charon ${MAKE} charon
@echo $@ is a dwarf planet @echo "$@ is a dwarf planet"
@echo dwarf is a type of planet @echo "dwarf is a type of planet"
@echo therefore, $@ is a planet @echo "therefore, $@ is a planet"
@echo get used to having lots of planets becasue supernovae can ${MAKE} a lot of them @echo "having lots of planets is good feature because supernovae can help ${MAKE} a lot of them"
2019/adamovsky/README.md
+42 -27
View File
@@ -1,23 +1,30 @@
# Most functional interpreter # Most functional interpreter
Ondřej Adamovský <oa@cmail.cz> Ondřej Adamovský <oa@cmail.cz>
# To build:
## Judges' comments: ```sh
### To use: make
```
make prog ### To run:
./prog file.unl
```sh
./prog file.unl
```
### Try: ### Try:
./prog spam.unl ```sh
./prog spam.unl
./prog sierpinski.unl | less ./prog sierpinski.unl | less
./prog advent.unl ./prog advent.unl
```
### Selected Judges Remarks: ## Judges' comments:
Even after pre-processing and indenting, the C code of this entry Even after pre-processing and indenting, the C code of this entry
is about as understandable as the Unlambda code. is about as understandable as the Unlambda code.
@@ -26,20 +33,23 @@ Pretending that we don't know a bit of functional programming :) and lacking a b
to understand the entry but to fuzz it, to understand the entry but to fuzz it,
we stumbled on a string of bytes which crashed it: we stumbled on a string of bytes which crashed it:
````.0`.0`.0`c.0``sssss ```
````.0`.0`.0`c.0``sssss
```
Functional programming is not a panacea against core dumps, after all. Functional programming is not a panacea against core dumps, after all.
## Author's comments: ## Author's comments:
**&#187;A highly structured state state machine&#171;** **&#187;A highly structured state state machine&#171;**
### Purpose ### ### Purpose
The purpose of this program is to allow you to play Colossal Cave Adventure as The purpose of this program is to allow you to play Colossal Cave Adventure as
implemented by [Kunihiko Sakamoto][1]. As that was written in [Unlambda programming implemented by [Kunihiko Sakamoto][1]. As that was written in [Unlambda programming
language][2] designed by David Alexander Madore it has to be an Unlambda interpreter. language][2] designed by David Alexander Madore it has to be an Unlambda interpreter.
### Aesthetics ### ### Aesthetics
The program grew a bit too long so I had to use several macros to downsize it. The program grew a bit too long so I had to use several macros to downsize it.
That unfortunately reduced my options for program layout. I decided to separate That unfortunately reduced my options for program layout. I decided to separate
@@ -55,16 +65,20 @@ It might be a surprise for you that according to the IOCCC size tool the program
actually a *oneliner*. It certainly was for me. I like to think the tool is overwhelmed actually a *oneliner*. It certainly was for me. I like to think the tool is overwhelmed
by the sheer length of the dividing line and totally overlooks the rest of the program. by the sheer length of the dividing line and totally overlooks the rest of the program.
### Usage ### ### Usage
When built directly When built directly
make ```sh
make
```
the program (*prog*) accepts a single parameter with the name of an Unlambda program. You can the program (*prog*) accepts a single parameter with the name of an Unlambda program. You can
download the [Colossal Cave Adventure][1] (the *advent.unl* file) and run it like this download the [Colossal Cave Adventure][1] (the *advent.unl* file) and run it like this
./prog advent.unl ```sh
./prog advent.unl
```
You can also try other programs from the Web. Many example programs are in the official You can also try other programs from the Web. Many example programs are in the official
[Unlambda distribution][3] on the Unlambda homepage. The most complex programs there are [Unlambda distribution][3] on the Unlambda homepage. The most complex programs there are
@@ -73,7 +87,9 @@ entries from [quine contest][4].
There is an alternative build path that requires IOCCC size tool to complete. Put the tool There is an alternative build path that requires IOCCC size tool to complete. Put the tool
source *iocccsize.c* in the project directory and call source *iocccsize.c* in the project directory and call
make identify ```sh
make identify
```
It will build the tool and use it to build an alternative program *prog2*, which in turn will It will build the tool and use it to build an alternative program *prog2*, which in turn will
produce an Unlambda program *identify.unl*. `make identify` runs this program to identify produce an Unlambda program *identify.unl*. `make identify` runs this program to identify
@@ -92,7 +108,7 @@ when the execution reaches them).
The Unlambda source file may contain several Unlambda programs. The interpreter will run The Unlambda source file may contain several Unlambda programs. The interpreter will run
them all in sequence. them all in sequence.
### Unlambda ### ### Unlambda
If you want to familiarise yourself with the language, visit its [Wikipedia page][5] for If you want to familiarise yourself with the language, visit its [Wikipedia page][5] for
a brief introduction or its [homepage][2] for an indepth discussion. For further reading you a brief introduction or its [homepage][2] for an indepth discussion. For further reading you
@@ -101,7 +117,7 @@ can visit Wikipedia pages on [Lambda Calculus][6] and [Combinatory Logic][7].
You can also play with an [online interpreter][8] by Github user inazz. There you can You can also play with an [online interpreter][8] by Github user inazz. There you can
debug one of example programs provided or try your wits in writing your own. debug one of example programs provided or try your wits in writing your own.
### Hints ### ### Hints
Here are some pointers where to start when trying to understand the interpreter: Here are some pointers where to start when trying to understand the interpreter:
@@ -112,7 +128,7 @@ Here are some pointers where to start when trying to understand the interpreter:
- Can fD0 function be called? - Can fD0 function be called?
- Are the function names familiar? (warning: some are misleading) - Are the function names familiar? (warning: some are misleading)
### Obfuscation sources ### ### Obfuscation sources
- The elephant in the room is the Unlambda language. As we all know, functional - The elephant in the room is the Unlambda language. As we all know, functional
programming defies sanity. Furthermore, Unlambda was specifically designed programming defies sanity. Furthermore, Unlambda was specifically designed
@@ -125,7 +141,7 @@ Here are some pointers where to start when trying to understand the interpreter:
More on this in the Spoilers section. More on this in the Spoilers section.
### Build notes ### ### Build notes
The program does not require any special treatment by compilers. Some warnings The program does not require any special treatment by compilers. Some warnings
had to be suppressed when compiling with `-Wall -Wextra -pedantic`. Those were had to be suppressed when compiling with `-Wall -Wextra -pedantic`. Those were
@@ -134,7 +150,7 @@ technique. Compilation with `-Weverything` produced many more warnings, but thos
are only relevant for multi-source-file projects and some are really questionable are only relevant for multi-source-file projects and some are really questionable
(e.g. `-Wdisabled-macro-expansion`). (e.g. `-Wdisabled-macro-expansion`).
### Portability ### ### Portability
Development was done on Debian 9 on x86-64 architecture using mainly Clang 3.8.1-24 Development was done on Debian 9 on x86-64 architecture using mainly Clang 3.8.1-24
and GCC 6.3.0. The source is C11 compliant and does not use any special properties and GCC 6.3.0. The source is C11 compliant and does not use any special properties
@@ -155,7 +171,7 @@ except the following:
for later printing. This might produce some warnings, but since it was developed for later printing. This might produce some warnings, but since it was developed
using chars it should be always used safely. using chars it should be always used safely.
### Spoilers ### ### Spoilers
- You can examine the *progSpoiler.c* file. It is the original final version of - You can examine the *progSpoiler.c* file. It is the original final version of
the interpreter, before I started the downsizing. It accepts one more optional the interpreter, before I started the downsizing. It accepts one more optional
@@ -208,12 +224,12 @@ except the following:
functions were shuffled both for S functions and Apply functions in the same way functions were shuffled both for S functions and Apply functions in the same way
to hide the meaning of *f* and *r* prefixes. to hide the meaning of *f* and *r* prefixes.
### Identification spoiler ### ### Identification spoiler
The alternative build path `make identify` output commemorates a [previous IOCCC winner][9] which uses The alternative build path `make identify` output commemorates a [previous IOCCC winner][9] which uses
similar methods to mess with the size tool. similar methods to mess with the size tool.
### Judges remarks spoilers ### ### Judges remarks spoilers
It is not a bug, it is a feature. :) It is not a bug, it is a feature. :)
@@ -244,11 +260,10 @@ never be complete and able to be applied.
[8]: https://inazz.jp/unlambda/ "Online Unlambda interpreter" [8]: https://inazz.jp/unlambda/ "Online Unlambda interpreter"
[9]: http://ioccc.org/2014/birken/hint.html "Best use of port 1701" [9]: http://ioccc.org/2014/birken/hint.html "Best use of port 1701"
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