mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-07-07 03:38:31 +00:00
Make fatcosmocc good enough to build Lua 5.4.6
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
parent
566cb5963f
commit
399d14aadf
17 changed files with 612 additions and 629 deletions
390
bin/fatcosmocc
390
bin/fatcosmocc
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@ -1,6 +1,6 @@
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#!/bin/sh
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#
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# fat cosmopolitan c compiler
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# fat cosmopolitan c/c++ compiler
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#
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# - this command is a drop-in replacement for the cc or gcc command.
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# the difference is that (1) your binaries will be linked with the
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@ -24,10 +24,11 @@
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#
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# installation
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#
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# sudo chmod 1777 /opt
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# sudo chmod 1777 /opt # sticky bit isn't required
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# git clone https://github.com/jart/cosmopolitan /opt/cosmo
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# export PATH="$PATH:/opt/cosmo/bin:/opt/cosmos/bin"
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# echo 'export PATH="$PATH:/opt/cosmo/bin:/opt/cosmos/bin"' >>~/.profile
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# ape-install # optionally install a faster systemwide ape loader
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# fatcosmocc --update # pull and rebuild toolchain artifacts
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#
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# getting started
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@ -36,27 +37,6 @@
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# ./foo.com
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# ./foo.com.dbg
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#
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# building open source projects
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#
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# export CC=fatcosmocc
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# export CXX=fatcosmoc++
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# ./configure --prefix=/opt/cosmos
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# make -j
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# make install
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#
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# cosmopolitan runtime flags
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#
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# ./hello.com --strace
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# ./hello.com --ftrace
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#
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# cosmpolitan runtime libraries
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#
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# #include <cosmo.h>
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# int main() {
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# ShowCrashReports();
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# __builtin_trap();
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# }
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#
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# building in tiny mode
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#
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# export MODE=tiny
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@ -69,15 +49,57 @@
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# fatcosmocc --update
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# fatcosmocc -g -o foo.com foo.c
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#
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# building a project like lua 5.4.6
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#
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# make all test CC=fatcosmocc AR='fatcosmoar rcu'
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#
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# detecting this environment
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#
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# - `__FATCOSMOCC__` is defined when this compiler is in play
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# - `__COSMOPOLITAN__` is always defined by Cosmopolitan Libc
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#
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# some notes on this compiler
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#
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# - the underlying compiler itself is gcc
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# - we use cosmopoiltan libc rather than glibc
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# - we use llvm's compiler-rt and libcxx runtimes
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# - we patched gcc so switch case can have symbols
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# - our scanf() implementation is somewhat troubled
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# - you may need to recalibrate `make -jN` as `N/2`
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#
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# compiler flags that work differently
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#
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# - `-v` will log fatcosmocc subcommands to stderr
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# - `-s` will ask apelink to not embed symbol tables in zip
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# - `-E` can't be fat and runs once with x86_64 macros undefined
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# - `-save-temps` will prevent deleting your arch-specific executables
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#
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# compiler flags that aren't supported
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#
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# - `-fexceptions` cosmopolitan doesn't support c++ exceptions yet
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# - `-frtti` cosmopolitan doesn't support c++ runtime reflection yet
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# - `-mred-zone` the system v red zone doesn't exist on windows and metal
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# - `-fpic`, '-fPIC', `-shared`, `-pie`, etc. no shared object support yet
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# - `-fsanitize=thread` cosmopolitan doesn't have thread sanitizer runtime yet
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# - `-fomit-frame-pointer` is partially supported (apple forbids full removal)
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#
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# for further details, run `man gcc`
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export PROG=${0##*/}
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export COSMO=${COSMO:-/opt/cosmo}
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export COSMOS=${COSMOS:-/opt/cosmos}
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export ORIGINAL="$0 $*"
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export TMPDIR=${TMPDIR:-/tmp}
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export BUILDLOG=
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GCC_VERSION=11.2.0
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if [ "$1" = "--version" ]; then
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# note: only the underlying gcc compiler binaries are gpl
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# our shell script is released with the isc license
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# absolutely zero cosmo runtime libraries are gpl'd
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# and the apelink.com program is definitely not gpl
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cat <<EOF
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$PROG (GCC) 11.2.0
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$PROG (GCC) $GCC_VERSION
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Copyright (C) 2019 Free Software Foundation, Inc.
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This is free software; see the source for copying conditions. There is NO
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warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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@ -85,6 +107,14 @@ EOF
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exit 0
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fi
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if [ "$1" = "--help" ]; then
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if [ -t 1 ]; then
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exec less "$0"
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else
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exec cat "$0"
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fi
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fi
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MODE=${MODE:-$m}
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if [ x"$MODE" = x"" ]; then
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MODE_AARCH64=aarch64
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@ -128,14 +158,50 @@ fi
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export FIXUPOBJ="$COSMO/o/$MODE/tool/build/fixupobj.com"
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TEMP_FILES=
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SAVE_TEMPS=0
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SAVE_TMPS=0
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Exit() {
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rc=${1:-$?}
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if [ $SAVE_TEMPS -eq 0 ] && [ $SAVE_TMPS -eq 0 ]; then
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rm -f $TEMP_FILES
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fi
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exit $rc
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}
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show_warning() {
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echo "$PROG: warning: $1" >&2
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}
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fatal_error() {
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echo "$PROG: fatal error: $1" >&2
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echo "compilation terminated." >&2
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Exit 1
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}
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log_command() {
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if [ -n "$BUILDLOG" ]; then
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printf '# %s\n(cd %s; %s)\n' "$ORIGINAL" "$PWD" "$*" >>"$BUILDLOG"
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fi
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}
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if [ x"$TMPDIR" != x"${TMPDIR#* }" ]; then
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fatal_error '$TMPDIR containing spaces not supported'
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fi
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if [ ! -d "$TMPDIR" ]; then
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if ! mkdir -p "$TMPDIR" 2>/dev/null; then
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fatal_error "$TMPDIR: not a directory"
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fi
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fi
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OPT=
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FILES=
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FIRST=1
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OUTPUT=
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STRIP=0
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INTENT=ld
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GOT_SOME=0
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SAVE_TEMPS=0
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NEED_OUTPUT=
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APELINKFLAGS=
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FRAME=""
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for x; do
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if [ $FIRST -eq 1 ]; then
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@ -147,22 +213,47 @@ for x; do
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OUTPUT=$x
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continue
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fi
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if [ x"$x" = x"${x#-*}" ]; then
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GOT_SOME=1
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if [ x"$x" = x"-" ] || # is an argument
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[ x"$x" = x"${x#-*}" ]; then # !startswith(x, "-")
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if [ x"$x" != x"${x#* }" ]; then
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fatal_error "input arguments containing spaces unsupported"
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elif [ x"$x" != x"${x%.s}" ] ||
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[ x"$x" != x"${x%.S}" ]; then
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fatal_error "$x: assembler input files not supported"
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elif [ x"$x" != x"${x%.so}" ] ||
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[ x"$x" != x"${x%.dll}" ] ||
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[ x"$x" != x"${x%.dylib}" ]; then
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fatal_error "$x: dynamic shared object input files not supported"
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elif [ x"$x" != x"-" ] && [ ! -f "$x" ]; then
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fatal_error "$x: no such file"
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fi
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if [ -z "$FILES" ]; then
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FILES=$x
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else
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FILES="$FILES $x"
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fi
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continue
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elif [ x"$x" = x"-o" ]; then
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NEED_OUTPUT=1
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continue
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elif [ x"$x" != x"${x#-o}" ]; then
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elif [ x"$x" != x"${x#-o}" ]; then # startswith(x, "-o")
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OUTPUT=${x#-o}
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continue
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elif [ x"$x" != x"${x#-O}" ]; then
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elif [ x"$x" != x"${x#-O}" ]; then # startswith(x, "-O")
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OPT=$x
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elif [ x"$x" = x"-c" ]; then
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INTENT=cc
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elif [ x"$x" = x"-E" ]; then
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INTENT=cpp
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elif [ x"$x" = x"-s" ]; then
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STRIP=1
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APELINKFLAGS="$APELINKFLAGS -s"
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continue
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elif [ x"$x" = x"-v" ]; then
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exec 3<&2 # dup2(2, 3) b/c stderr will be redirected later
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export BUILDLOG=/dev/fd/3
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continue
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elif [ x"$x" = x"-x-save-tmps" ]; then
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SAVE_TMPS=1
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continue
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elif [ x"$x" = x"-save-temps" ]; then
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SAVE_TEMPS=1
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@ -172,8 +263,10 @@ for x; do
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# tail calls — may opt not to create an entry in this list. As a
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# result, stack traces are always meaningful, even without debug
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# information."
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x="-momit-leaf-frame-pointer"
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set -- "$@" -momit-leaf-frame-pointer -foptimize-sibling-calls
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continue
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elif [ x"$x" = x"-r" ] ||
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[ x"$x" = x"-S" ] ||
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[ x"$x" = x"-pie" ] ||
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[ x"$x" = x"-frtti" ] ||
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[ x"$x" = x"-shared" ] ||
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@ -181,13 +274,11 @@ for x; do
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[ x"$x" = x"-mred-zone" ] ||
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[ x"$x" = x"-fexceptions" ] ||
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[ x"$x" = x"-fsanitize=thread" ]; then
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echo "$PROG: $x not supported" >&2
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exit 1
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fatal_error "$x flag not supported"
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elif [ x"$x" = x"-fsanitize=all" ] ||
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[ x"$x" = x"-fsanitize=address" ] ||
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[ x"$x" = x"-fsanitize=undefined" ]; then
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echo "$PROG: use cosmo MODE=dbg rather than passing $x" >&2
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exit 1
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fatal_error "$x use cosmo MODE=dbg rather than passing $x"
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elif [ x"$x" = x"-mno-red-zone" ]; then
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# "Any memory below the stack beyond the red zone is considered
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# volatile and may be modified by the operating system at any time."
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@ -206,105 +297,204 @@ for x; do
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[ x"$x" = x"-shared-libgcc" ]; then
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# cosmopolitan.a always has llvm compiler runtime static code
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continue
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elif [ x"$x" = x"-dumpversion" ]; then
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echo $GCC_VERSION
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Exit 0
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fi
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set -- "$@" "$x"
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done
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if [ x"$MODE" = x"dbg" ]; then
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set -- \
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-fsanitize=address \
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-fsanitize=undefined \
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"$@"
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if [ -z "$FILES" ]; then
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fatal_error "$x: no input files"
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elif [ $INTENT != ld ] && [ x"$FILES" != x"${FILES#* }" ]; then
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fatal_error "cannot specify '-o' with '-c', or '-E' with multiple files"
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fi
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PLATFORM="-D__COSMOPOLITAN__ -D__FATCOSMOCC__"
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PREDEF="-include libc/integral/normalize.inc"
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CPPFLAGS="-nostdinc -iquote $COSMO -isystem $COSMOS/include -isystem $COSMO/libc/isystem -fno-pie -fno-math-errno"
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CCFLAGS_START="-fportcosmo -fno-dwarf2-cfi-asm -fno-unwind-tables -fno-asynchronous-unwind-tables -fno-semantic-interposition"
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CCFLAGS_END="-fno-omit-frame-pointer"
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if [ x"$MODE" = x"dbg" ]; then
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CPPFLAGS_START="-fsanitize=address -fsanitize=undefined"
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fi
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if [ x"$OPT" != x"-Os" ] &&
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[ x"${MODE#tiny}" != x"${MODE}" ]; then
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set -- \
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-fno-optimize-sibling-calls \
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-mno-omit-leaf-frame-pointer \
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"$@"
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fi
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set -- \
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-fno-pie \
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-fportcosmo \
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-fno-dwarf2-cfi-asm \
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-fno-unwind-tables \
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-fno-asynchronous-unwind-tables \
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-fno-semantic-interposition \
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-fno-math-errno \
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"$@" \
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-fno-omit-frame-pointer
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PLATFORM="-D__COSMOPOLITAN__"
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PREDEF="-include libc/integral/normalize.inc"
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CPPFLAGS="-nostdinc -iquote $COSMO -isystem $COSMOS/include -isystem $COSMO/libc/isystem"
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if [ "$GOT_SOME" -eq 0 ]; then
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echo "$PROG: fatal error: no input files" >&2
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echo "compilation terminated." >&2
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exit 1
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CCFLAGS_START="${CCFLAGS_START} -fno-optimize-sibling-calls -mno-omit-leaf-frame-pointer"
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fi
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if [ $INTENT = cpp ]; then
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if [ -n "$OUTPUT" ]; then
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set -- "$@" -o"$OUTPUT"
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fi
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MODE="$MODE" "$COSMO/tool/scripts/fat-x86_64" \
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-U__x86_64__ $PLATFORM $CPPFLAGS "$@"
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exit
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fi
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if [ -z "$OUTPUT" ]; then
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if [ $INTENT = cc ]; then
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echo "$PROG: passing -c without -o flag not supported" >&2
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exit 1
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CC="$COSMO/o/third_party/gcc/bin/x86_64-linux-musl-gcc"
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if [ x"$PROG" != x"${PROG%++}" ]; then
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CC="$COSMO/o/third_party/gcc/bin/x86_64-linux-musl-g++"
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fi
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OUTPUT=a.out
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set -- \
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"$CC" \
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-U__k8 \
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-U__k8__ \
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-U__amd64 \
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-U__amd64__ \
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-U__x86_64 \
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-U__x86_64__ \
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-U__SSE__ \
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-U__SSE2__ \
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-U__SSE2_MATH__ \
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-mno-red-zone \
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$PLATFORM \
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$CPPFLAGS \
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"$@" \
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$FILES
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log_command "$@"
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MODE="$MODE" exec "$@"
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fi
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set -- $PLATFORM $PREDEF $CPPFLAGS "$@"
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mangle_object_path() {
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path=$1
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arch=$2
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outdir=${path%/*}
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outbas=${path##*/}
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if [ x"$outdir" = x"$path" ]; then
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outdir=
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elif [ -n "$outdir" ]; then
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outdir="$outdir/"
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fi
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if [ ! -d "$outdir.$arch" ]; then
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mkdir -p "$outdir.$arch" || Exit
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fi
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mangled_path="${outdir}.$arch/$outbas"
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}
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|
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out2=$(mktemp "${TMPDIR:-/tmp}/ccc.XXXXXX") || exit
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mktemper() {
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"$COSMO/o/$MODE/tool/build/mktemper.com" \
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"$TMPDIR/fatcosmocc.XXXXXXXXXXXXX$1"
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}
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build_object() {
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out2=$(mktemper .txt) || Exit
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TEMP_FILES="${TEMP_FILES} $out2"
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MODE="$MODE" \
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"$COSMO/tool/scripts/fat-x86_64" \
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-c -o"$OUTPUT_X86_64" \
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$PLATFORM \
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$PREDEF \
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$CPPFLAGS \
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$CCFLAGS_START \
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"$@" \
|
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$CCFLAGS_END &
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pid1=$!
|
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MODE="$MODE_AARCH64" \
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"$COSMO/tool/scripts/fat-aarch64" \
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-c -o"$OUTPUT_AARCH64" \
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$PLATFORM \
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$PREDEF \
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||||
$CPPFLAGS \
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||||
$CCFLAGS_START \
|
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"$@" \
|
||||
$CCFLAGS_END \
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2>"$out2" &
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pid2=$!
|
||||
if ! wait $pid1; then
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kill $pid2 2>/dev/null
|
||||
wait
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Exit 1
|
||||
fi
|
||||
if ! wait $pid2; then
|
||||
echo "$PROG: x86_64 succeeded but failed to build object for aarch64:" >&2
|
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cat "$out2" >&2
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||||
Exit 1
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||||
fi
|
||||
}
|
||||
|
||||
# turn source files into objects
|
||||
OBJECTS_X86_64=
|
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OBJECTS_AARCH64=
|
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for x in $FILES; do
|
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if [ x"$x" != x"${x%.o}" ] ||
|
||||
[ x"$x" != x"${x%.a}" ]; then
|
||||
if [ $INTENT = cc ]; then
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show_warning "$x: linker input file unused because linking not done"
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else
|
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mangle_object_path "$x" aarch64
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if [ ! -f "$mangled_path" ]; then
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fatal_error "$x: linker input missing concomitant $mangled_path file"
|
||||
fi
|
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OBJECTS_X86_64="${OBJECTS_X86_64} $x"
|
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OBJECTS_AARCH64="${OBJECTS_AARCH64} $mangled_path"
|
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fi
|
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elif [ $INTENT = cc ]; then
|
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if [ -n "$OUTPUT" ]; then
|
||||
# e.g. `cc -c -o bar.o foo.c` is specified by user
|
||||
OUTPUT_X86_64=$OUTPUT
|
||||
mangle_object_path "$OUTPUT" aarch64
|
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OUTPUT_AARCH64="$mangled_path"
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build_object "$@" "$x"
|
||||
else
|
||||
# e.g. `cc -c foo.c` builds foo.o
|
||||
OUTPUT_X86_64="${x%.*}.o"
|
||||
mangle_object_path "${x%.*}.o" aarch64
|
||||
OUTPUT_AARCH64="$mangled_path"
|
||||
build_object "$@" "$x"
|
||||
fi
|
||||
else
|
||||
# e.g. `cc -o foo foo.c` should *not* build foo.o
|
||||
OUTPUT_X86_64=$(mktemper .o) || Exit
|
||||
OUTPUT_AARCH64=$(mktemper .o) || Exit
|
||||
TEMP_FILES="${TEMP_FILES} ${OUTPUT_X86_64} ${OUTPUT_AARCH64}"
|
||||
build_object "$@" "$x"
|
||||
OBJECTS_X86_64="${OBJECTS_X86_64} ${OUTPUT_X86_64}"
|
||||
OBJECTS_AARCH64="${OBJECTS_AARCH64} ${OUTPUT_AARCH64}"
|
||||
fi
|
||||
done
|
||||
|
||||
if [ $INTENT != ld ]; then
|
||||
Exit
|
||||
fi
|
||||
|
||||
OUTPUT_X86_64="$OUTPUT.x86_64"
|
||||
OUTPUT_AARCH64="$OUTPUT.aarch64"
|
||||
|
||||
out2=$(mktemper .txt) || Exit
|
||||
TEMP_FILES="${TEMP_FILES} $out2"
|
||||
MODE="$MODE" \
|
||||
"$COSMO/tool/scripts/fat-x86_64" -o"$OUTPUT.x86_64" "$@" &
|
||||
"$COSMO/tool/scripts/fat-x86_64" -o"$OUTPUT_X86_64" "$@" $OBJECTS_X86_64 &
|
||||
pid1=$!
|
||||
|
||||
MODE="$MODE_AARCH64" \
|
||||
"$COSMO/tool/scripts/fat-aarch64" -o"$OUTPUT.aarch64" "$@" 2>"$out2" &
|
||||
"$COSMO/tool/scripts/fat-aarch64" -o"$OUTPUT_AARCH64" "$@" $OBJECTS_AARCH64 2>"$out2" &
|
||||
pid2=$!
|
||||
|
||||
if ! wait $pid1; then
|
||||
kill $pid2 2>/dev/null
|
||||
wait
|
||||
rm -f "$out2"
|
||||
exit 1
|
||||
Exit 1
|
||||
fi
|
||||
|
||||
if ! wait $pid2; then
|
||||
wait
|
||||
echo "$PROG: aarch64 compiler failed with:" >&2
|
||||
echo "$PROG: x86_64 succeeded but failed to link executable for aarch64:" >&2
|
||||
cat "$out2" >&2
|
||||
rm -f "$out2"
|
||||
exit 1
|
||||
Exit 1
|
||||
fi
|
||||
|
||||
rm -f "$out2"
|
||||
|
||||
set -- \
|
||||
"$COSMO/o/$MODE/tool/build/apelink.com" \
|
||||
-l "$COSMO/o/$MODE/ape/ape.elf" \
|
||||
-l "$COSMO/o/$MODE_AARCH64/ape/ape.elf" \
|
||||
-M "$COSMO/ape/ape-m1.c" \
|
||||
-o "$OUTPUT" \
|
||||
"$OUTPUT.x86_64" \
|
||||
"$OUTPUT.aarch64"
|
||||
printf '# %s\n(cd %s; %s)\n' "$ORIGINAL" "$PWD" "$*" >>"${TMPDIR:-/tmp}/build.log"
|
||||
"$@" || exit
|
||||
$APELINKFLAGS \
|
||||
"$OUTPUT_X86_64" \
|
||||
"$OUTPUT_AARCH64"
|
||||
log_command "$@"
|
||||
"$@" || Exit
|
||||
|
||||
"$COSMO/o/$MODE/tool/build/pecheck.com" "$OUTPUT" || exit
|
||||
set -- \
|
||||
"$COSMO/o/$MODE/tool/build/pecheck.com" "$OUTPUT"
|
||||
log_command "$@"
|
||||
"$@" || Exit
|
||||
|
||||
if [ $SAVE_TEMPS -eq 0 ]; then
|
||||
rm -f "$OUTPUT.x86_64" \
|
||||
"$OUTPUT.aarch64"
|
||||
if [ $INTENT = ld ] && [ $SAVE_TEMPS -eq 0 ]; then
|
||||
rm -f "$OUTPUT_X86_64" \
|
||||
"$OUTPUT_AARCH64"
|
||||
fi
|
||||
|
||||
Exit
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue