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Make fatcosmocc good enough to build Lua 5.4.6

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make all test CC=fatcosmocc AR='fatcosmoar rcu'

This change introduces a program named mktemper.com which provides more
reliable and secure temporary file name generation for scripts. It also
makes our ar.com program more permissive in what commands it'll accept.
The cosmocc command is improved by this change too.
This commit is contained in:
Justine Tunney 2023-08-12 16:44:04 -07:00
parent 566cb5963f
commit 399d14aadf
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GPG key ID: BE714B4575D6E328
17 changed files with 612 additions and 629 deletions
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45
bin/cosmocc
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@ -1,13 +1,14 @@
#!/bin/sh
#
# non-fat cosmopolitan c compiler
# cosmopolitan c/c++ compiler
#
# getting started
#
# sudo chmod 1777 /opt
# sudo chmod 1777 /opt # sticky bit isn't required
# git clone https://github.com/jart/cosmopolitan /opt/cosmo
# export PATH="$PATH:/opt/cosmo/bin:/opt/cosmos/bin"
# echo 'export PATH="$PATH:/opt/cosmo/bin:/opt/cosmos/bin"' >>~/.profile
# ape-install # optionally install a faster systemwide ape loader
# cosmocc --update # pull and rebuild toolchain artifacts
#
# building open source projects
@ -49,15 +50,44 @@
# (cd /opt/cosmo; make -j8 toolchain)
# cosmocc -o foo.com foo.c
#
# detecting this environment
#
# - `__COSMOCC__` is defined when this compiler is in play
# - `__COSMOPOLITAN__` is always defined by Cosmopolitan Libc
#
# some notes on this compiler
#
# - the underlying compiler itself is gcc
# - we use cosmopoiltan libc rather than glibc
# - we use llvm's compiler-rt and libcxx runtimes
# - we patched gcc so switch case can have symbols
# - our scanf() implementation is somewhat troubled
#
# compiler flags that aren't supported
#
# - `-r` partial linking not implemented yet (todo)
# - `-S` you need to put your assembly behind #ifdefs instead
# - `-fexceptions` cosmopolitan doesn't support c++ exceptions yet
# - `-frtti` cosmopolitan doesn't support c++ runtime reflection yet
# - `-mred-zone` the system v red zone doesn't exist on windows and metal
# - `-fpic`, '-fPIC', `-shared`, `-pie`, etc. no shared object support yet
# - `-fsanitize=thread` cosmopolitan doesn't have thread sanitizer runtime yet
# - `-fomit-frame-pointer` is partially supported (apple forbids full removal)
#
# for further details, run `man gcc`
PROG=${0##*/}
MODE=${MODE:-$m}
COSMO=${COSMO:-/opt/cosmo}
COSMOS=${COSMOS:-/opt/cosmos}
GCC_VERSION=11.2.0
if [ "$1" = "--version" ]; then
# note: only the underlying gcc compiler binaries are gpl
# our shell script is released with the isc license
# absolutely zero cosmo runtime libraries are gpl'd
cat <<EOF
$PROG (GCC) 11.2.0
$PROG (GCC) $GCC_VERSION
Copyright (C) 2019 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
@ -134,7 +164,8 @@ for x; do
set -- "$@" "$x"
continue
fi
if [ x"$x" = x"${x#-*}" ]; then
if [ x"$x" = x"-" ] || # is an argument
[ x"$x" = x"${x#-*}" ]; then # !startswith(x, "-")
GOT_SOME=1
elif [ x"$x" = x"-static-libstdc++" ]; then
continue
@ -180,7 +211,8 @@ for x; do
# tail calls — may opt not to create an entry in this list. As a
# result, stack traces are always meaningful, even without debug
# information."
x="-momit-leaf-frame-pointer"
set -- "$@" -momit-leaf-frame-pointer -foptimize-sibling-calls
continue
elif [ x"$x" = x"-Werror" ] || \
[ x"$x" = x"-pedantic-errors" ]; then
# this toolchain is intended for building other people's code
@ -189,6 +221,9 @@ for x; do
elif [ x"$x" = x"-march=native" ]; then
set -- "$@" $("$COSMO/o/$MODE/tool/build/march-native.com")
continue
elif [ x"$x" = x"-dumpversion" ]; then
echo $GCC_VERSION
exit 0
fi
set -- "$@" "$x"
done