mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-07-03 09:48:29 +00:00
Improve cosmocc / cosmoc++ toolchain scripts
- Get out of the red zone - Generate --ftrace nops unless -Os is passed - Intercept -o path to generate .com / .com.dbg appropriately
This commit is contained in:
Justine Tunney
parent
25678db2a0
commit
22f81a8d50
9 changed files with 207 additions and 127 deletions
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@ -38,7 +38,7 @@ FLAGS\n\
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const char *prog;
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static void Print(int fd, const char *s, ...) {
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nullterminated() static void Print(int fd, const char *s, ...) {
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va_list va;
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char buf[2048];
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va_start(va, s);
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@ -27,8 +27,6 @@
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#include "libc/elf/struct/sym.h"
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#include "libc/errno.h"
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#include "libc/fmt/itoa.h"
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#include "libc/intrin/kprintf.h"
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#include "libc/log/check.h"
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#include "libc/log/log.h"
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#include "libc/macros.internal.h"
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#include "libc/mem/gc.internal.h"
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@ -58,7 +56,7 @@ Usage: fixupobj.com [-h] ARGS...\n\
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#define MRS_TPIDR_EL0 0xd53bd040u
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#define MOV_REG(DST, SRC) (0xaa0003e0u | (SRC) << 16 | (DST))
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const unsigned char kFatNops[8][8] = {
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static const unsigned char kFatNops[8][8] = {
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{}, //
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{0x90}, // nop
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{0x66, 0x90}, // xchg %ax,%ax
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@ -69,16 +67,16 @@ const unsigned char kFatNops[8][8] = {
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{0x0f, 0x1f, 0x80, 0x00, 0x00, 0x00, 0x00}, // nopl 0x00000000(%rax)
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};
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int mode;
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char *symstrs;
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char *secstrs;
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ssize_t esize;
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Elf64_Sym *syms;
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const char *epath;
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Elf64_Xword symcount;
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const Elf64_Ehdr *elf;
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static int mode;
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static char *symstrs;
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static char *secstrs;
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static ssize_t esize;
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static Elf64_Sym *syms;
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static const char *epath;
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static Elf64_Xword symcount;
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static const Elf64_Ehdr *elf;
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void Print(int fd, const char *s, ...) {
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nullterminated() static void Print(int fd, const char *s, ...) {
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va_list va;
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char buf[2048];
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va_start(va, s);
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@ -90,14 +88,14 @@ void Print(int fd, const char *s, ...) {
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va_end(va);
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}
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wontreturn void SysExit(const char *func) {
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static wontreturn void SysExit(const char *func) {
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const char *errstr;
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if (!(errstr = _strerdoc(errno))) errstr = "EUNKNOWN";
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Print(2, epath, ": ", func, " failed with ", errstr, "\n", NULL);
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exit(1);
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}
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void GetOpts(int argc, char *argv[]) {
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static void GetOpts(int argc, char *argv[]) {
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int opt;
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mode = O_RDWR;
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while ((opt = getopt(argc, argv, GETOPTS)) != -1) {
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@ -116,7 +114,7 @@ void GetOpts(int argc, char *argv[]) {
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}
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}
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Elf64_Shdr *FindElfSectionByName(const char *name) {
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static Elf64_Shdr *FindElfSectionByName(const char *name) {
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long i;
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Elf64_Shdr *shdr;
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for (i = 0; i < elf->e_shnum; ++i) {
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@ -128,7 +126,7 @@ Elf64_Shdr *FindElfSectionByName(const char *name) {
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return 0;
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}
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void CheckPrivilegedCrossReferences(void) {
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static void CheckPrivilegedCrossReferences(void) {
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long i, x;
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Elf64_Shdr *shdr;
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const char *secname;
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@ -156,7 +154,7 @@ void CheckPrivilegedCrossReferences(void) {
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}
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// Modify ARM64 code to use x28 for TLS rather than tpidr_el0.
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void RewriteTlsCode(void) {
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static void RewriteTlsCode(void) {
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int i, dest;
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Elf64_Shdr *shdr;
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uint32_t *p, *pe;
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@ -185,7 +183,7 @@ void RewriteTlsCode(void) {
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* In order for this to work, the function symbol must be declared as
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* `STT_FUNC` and `st_size` must have the function's byte length.
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*/
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void OptimizePatchableFunctionEntries(void) {
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static void OptimizePatchableFunctionEntries(void) {
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#ifdef __x86_64__
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long i, n;
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int nopcount;
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@ -210,7 +208,7 @@ void OptimizePatchableFunctionEntries(void) {
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#endif /* __x86_64__ */
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}
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void OptimizeRelocations(void) {
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static void OptimizeRelocations(void) {
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Elf64_Half i;
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Elf64_Rela *rela;
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unsigned char *code, *p;
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@ -218,11 +216,9 @@ void OptimizeRelocations(void) {
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for (i = 0; i < elf->e_shnum; ++i) {
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shdr = GetElfSectionHeaderAddress(elf, esize, i);
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if (shdr->sh_type == SHT_RELA) {
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CHECK_EQ(sizeof(struct Elf64_Rela), shdr->sh_entsize);
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CHECK_NOTNULL(
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(shdrcode = GetElfSectionHeaderAddress(elf, esize, shdr->sh_info)));
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shdrcode = GetElfSectionHeaderAddress(elf, esize, shdr->sh_info);
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if (!(shdrcode->sh_flags & SHF_EXECINSTR)) continue;
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CHECK_NOTNULL((code = GetElfSectionAddress(elf, esize, shdrcode)));
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code = GetElfSectionAddress(elf, esize, shdrcode);
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for (rela = GetElfSectionAddress(elf, esize, shdr);
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((uintptr_t)rela + shdr->sh_entsize <=
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MIN((uintptr_t)elf + esize,
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@ -269,7 +265,7 @@ void OptimizeRelocations(void) {
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}
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}
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void FixupObject(void) {
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static void FixupObject(void) {
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int fd;
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if ((fd = open(epath, mode)) == -1) {
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SysExit("open");
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@ -19,6 +19,9 @@
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# make install
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#
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COSMO=/opt/cosmo
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COSMOS=/opt/cosmos
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if [ "$1" = "--version" ]; then
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cat <<'EOF'
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x86_64-unknown-cosmo-g++ (GCC) 11.2.0
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@ -29,70 +32,115 @@ EOF
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exit 0
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fi
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CXX="/opt/cosmo/o/third_party/gcc/bin/x86_64-linux-musl-g++"
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CCFLAGS="-g -fdata-sections -ffunction-sections -fno-pie -pg -mnop-mcount -mno-tls-direct-seg-refs -fportcosmo -include /opt/cosmo/build/portcosmo.h"
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CXX="$COSMO/o/third_party/gcc/bin/x86_64-linux-musl-g++"
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OBJCOPY="$COSMO/o/third_party/gcc/bin/x86_64-linux-musl-objcopy"
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CCFLAGS="-g -fdata-sections -ffunction-sections -fno-pie -mno-tls-direct-seg-refs -mno-red-zone -fportcosmo -include $COSMO/build/portcosmo.h"
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CXXFLAGS="-fno-exceptions -fuse-cxa-atexit -fno-threadsafe-statics"
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CPPFLAGS="-DNDEBUG -nostdinc -iquote /opt/cosmo -isystem /opt/cosmos/include -isystem /opt/cosmo/libc/isystem -include libc/integral/normalize.inc"
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LDFLAGS="-static -no-pie -nostdlib -fuse-ld=bfd -Wl,-melf_x86_64 -Wl,--gc-sections -L/opt/cosmos/lib -Wl,-T,/opt/cosmo/o/ape/public/ape.lds /opt/cosmo/o/ape/ape-no-modify-self.o /opt/cosmo/o/libc/crt/crt.o"
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LDLIBS="/opt/cosmo/o/third_party/libcxx/libcxx.a /opt/cosmo/o/cosmopolitan.a"
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CPPFLAGS="-DNDEBUG -nostdinc -iquote /opt/cosmo -isystem $COSMOS/include -isystem $COSMO/libc/isystem -include libc/integral/normalize.inc"
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LDFLAGS="-static -no-pie -nostdlib -fuse-ld=bfd -Wl,-melf_x86_64 -Wl,--gc-sections -L$COSMOS/lib -Wl,-T,$COSMO/o/ape/public/ape.lds $COSMO/o/ape/ape-no-modify-self.o $COSMO/o/libc/crt/crt.o"
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LDLIBS="$COSMO/o/third_party/libcxx/libcxx.a $COSMO/o/cosmopolitan.a"
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if [ ! -d $COSMO ]; then
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echo you need to checkout cosmopolitan to your $COSMO directory >&2
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if [ ! -d "$COSMO" ]; then
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echo "you need to checkout cosmopolitan to your $COSMO directory" >&2
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exit 1
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fi
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if [ ! -d $COSMOS ]; then
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echo you need to create your $COSMOS directory >&2
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if [ ! -d "$COSMOS" ]; then
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echo "you need to create your $COSMOS directory" >&2
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exit 1
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fi
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# auto-install some shell libraries
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if [ ! -d $COSMOS/lib ]; then
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mkdir $COSMOS/lib
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if [ ! -d "$COSMOS/lib" ]; then
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mkdir "$COSMOS/lib"
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for lib in c dl gcc_s m pthread resolv rt z stdc++; do
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printf '\041\074\141\162\143\150\076\012' >$COSMOS/lib/lib$lib.a
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printf '\041\074\141\162\143\150\076\012' >"$COSMOS/lib/lib$lib.a"
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done
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fi
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OPT=
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HAS_C=0
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HAS_O=0
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HAS_E=0
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FIRST=1
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OUTPUT=
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NEED_OUTPUT=
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FRAME=-fno-omit-frame-pointer
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for x; do
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if [ $FIRST -eq 1 ]; then
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set --
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FIRST=0
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fi
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if [ "$x" = "-Werror" ]; then
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if [ x"$x" = x"-Werror" ]; then
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# this toolchain is intended for building other people's code
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# elevating warnings into errors, should only be done by devs
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continue
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fi
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if [ "$x" = "-pedantic" ]; then
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elif [ x"$x" = x"-pedantic" ]; then
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# this toolchain is intended for building other people's code
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# we don't need the compiler's assistance to be more portable
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continue
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fi
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if [ "$x" = "-c" ]; then
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elif [ x"$x" != x"${x#-O}" ]; then
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OPT=$x
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elif [ x"$x" = x"-c" ]; then
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HAS_C=1
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fi
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if [ "$x" = "-E" ]; then
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elif [ x"$x" = x"-E" ]; then
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HAS_E=1
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fi
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if [ "$x" = "-o" ] || [ "${x#-o}" != "$x" ]; then
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elif [ x"$x" = x"-o" ]; then
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HAS_O=1
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NEED_OUTPUT=1
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elif [ x"$x" != x"${x#-o}" ]; then
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HAS_O=1
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OUTPUT=${x#-o}
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elif [ -n "$NEED_OUTPUT" ]; then
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NEED_OUTPUT=
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OUTPUT=$x
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elif [ x"$x" = x"-fpic" ]; then
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continue
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elif [ x"$x" = x"-fPIC" ]; then
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continue
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elif [ x"$x" = x"-shared" ]; then
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echo "error: cosmocc -shared isn't supported" >&2
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exit 1
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elif [ x"$x" = x"-fomit-frame-pointer" ] || [ x"$x" = x"-fno-omit-frame-pointer" ]; then
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FRAME=$x
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continue
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fi
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set -- "$@" "$x"
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done
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if [ x"$OPT" != x"-Os" ]; then
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# support --ftrace unless optimizing for size
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CXXFLAGS="$CXXFLAGS -fpatchable-function-entry=18,16"
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fi
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LINKING=
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if [ "$HAS_E" = "1" ]; then
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set -- $CCFLAGS $CPPFLAGS "$@"
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elif [ "$HAS_C" = "1" ]; then
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set -- $CCFLAGS $CXXFLAGS $CPPFLAGS "$@" -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer
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set -- $CCFLAGS $CXXFLAGS $CPPFLAGS "$@" $FRAME
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else
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set -- $LDFLAGS $CXXFLAGS $CPPFLAGS "$@" $LDLIBS -Wl,-z,common-page-size=65536 -Wl,-z,max-page-size=65536
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LINKING=1
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set -- $LDFLAGS $CXXFLAGS $CPPFLAGS "$@" $LDLIBS -Wl,-z,common-page-size=65536 -Wl,-z,max-page-size=65536 $FRAME
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fi
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set -- "$CXX" "$@"
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printf '(cd %s; %s)\n' "$PWD" "$*" >>/tmp/build.log
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exec "$@"
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"$@" || exit
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if [ -n "$LINKING" ] && [ x"$OUTPUT" != x"" ]; then
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if [ x"$OUTPUT" != x"${OUTPUT%.com}" ] ||
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[ x"$OUTPUT" != x"${OUTPUT%.exe}" ]; then
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# cosmocc -o foo.com ...
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# -> foo.com (ape)
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# -> foo.com.dbg (elf)
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mv -f "$OUTPUT" "$OUTPUT.dbg" || exit
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"$OBJCOPY" -S -O binary "$OUTPUT.dbg" "$OUTPUT" || exit
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else
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# cosmocc -o foo ...
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# -> foo (elf)
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# -> foo.com (ape)
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# -> foo.com.dbg (elf)
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cp -f "$OUTPUT" "$OUTPUT.com.dbg" || exit
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"$OBJCOPY" -S -O binary "$OUTPUT" "$OUTPUT.com" || exit
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fi
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fi
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@ -32,69 +32,115 @@ EOF
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exit 0
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fi
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CC="/opt/cosmo/o/third_party/gcc/bin/x86_64-linux-musl-gcc"
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CFLAGS="-g -fdata-sections -ffunction-sections -fno-pie -pg -mnop-mcount -mno-tls-direct-seg-refs -fportcosmo -include /opt/cosmo/build/portcosmo.h"
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CPPFLAGS="-DNDEBUG -nostdinc -iquote /opt/cosmo -isystem $COSMOS/include -isystem /opt/cosmo/libc/isystem -include libc/integral/normalize.inc"
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LDFLAGS="-static -no-pie -nostdlib -fuse-ld=bfd -Wl,-melf_x86_64 -Wl,--gc-sections -Wl,-z,max-page-size=0x1000 -L$COSMOS/lib -Wl,-T,/opt/cosmo/o/ape/public/ape.lds /opt/cosmo/o/ape/ape-no-modify-self.o /opt/cosmo/o/libc/crt/crt.o"
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LDLIBS="/opt/cosmo/o/cosmopolitan.a"
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CC="$COSMO/o/third_party/gcc/bin/x86_64-linux-musl-gcc"
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OBJCOPY="$COSMO/o/third_party/gcc/bin/x86_64-linux-musl-objcopy"
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CCFLAGS="-g -fdata-sections -ffunction-sections -fno-pie -mno-tls-direct-seg-refs -mno-red-zone -fportcosmo -include $COSMO/build/portcosmo.h"
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CFLAGS=
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CPPFLAGS="-DNDEBUG -nostdinc -iquote /opt/cosmo -isystem $COSMOS/include -isystem $COSMO/libc/isystem -include libc/integral/normalize.inc"
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LDFLAGS="-static -no-pie -nostdlib -fuse-ld=bfd -Wl,-melf_x86_64 -Wl,--gc-sections -L$COSMOS/lib -Wl,-T,$COSMO/o/ape/public/ape.lds $COSMO/o/ape/ape-no-modify-self.o $COSMO/o/libc/crt/crt.o"
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LDLIBS="$COSMO/o/cosmopolitan.a"
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if [ ! -d $COSMO ]; then
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echo you need to checkout cosmopolitan to your $COSMO directory >&2
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if [ ! -d "$COSMO" ]; then
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echo "you need to checkout cosmopolitan to your $COSMO directory" >&2
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exit 1
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fi
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if [ ! -d $COSMOS ]; then
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echo you need to create your $COSMOS directory >&2
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if [ ! -d "$COSMOS" ]; then
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echo "you need to create your $COSMOS directory" >&2
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exit 1
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fi
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# auto-install some shell libraries
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if [ ! -d $COSMOS/lib ]; then
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mkdir $COSMOS/lib
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if [ ! -d "$COSMOS/lib" ]; then
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mkdir "$COSMOS/lib"
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for lib in c dl gcc_s m pthread resolv rt z stdc++; do
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printf '\041\074\141\162\143\150\076\012' >$COSMOS/lib/lib$lib.a
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printf '\041\074\141\162\143\150\076\012' >"$COSMOS/lib/lib$lib.a"
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done
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fi
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OPT=
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HAS_C=0
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HAS_O=0
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HAS_E=0
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FIRST=1
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OUTPUT=
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NEED_OUTPUT=
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FRAME=-fno-omit-frame-pointer
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for x; do
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if [ $FIRST -eq 1 ]; then
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set --
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FIRST=0
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fi
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if [ "$x" = "-Werror" ]; then
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if [ x"$x" = x"-Werror" ]; then
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# this toolchain is intended for building other people's code
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# elevating warnings into errors, should only be done by devs
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continue
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fi
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if [ "$x" = "-pedantic" ]; then
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elif [ x"$x" = x"-pedantic" ]; then
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# this toolchain is intended for building other people's code
|
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# we don't need the compiler's assistance to be more portable
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continue
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fi
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if [ "$x" = "-c" ]; then
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elif [ x"$x" != x"${x#-O}" ]; then
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OPT=$x
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elif [ x"$x" = x"-c" ]; then
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HAS_C=1
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fi
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if [ "$x" = "-E" ]; then
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elif [ x"$x" = x"-E" ]; then
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HAS_E=1
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fi
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if [ "$x" = "-o" ] || [ "${x#-o}" != "$x" ]; then
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elif [ x"$x" = x"-o" ]; then
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HAS_O=1
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NEED_OUTPUT=1
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elif [ x"$x" != x"${x#-o}" ]; then
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HAS_O=1
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OUTPUT=${x#-o}
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elif [ -n "$NEED_OUTPUT" ]; then
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NEED_OUTPUT=
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OUTPUT=$x
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elif [ x"$x" = x"-fpic" ]; then
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continue
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elif [ x"$x" = x"-fPIC" ]; then
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continue
|
||||
elif [ x"$x" = x"-shared" ]; then
|
||||
echo "error: cosmocc -shared isn't supported" >&2
|
||||
exit 1
|
||||
elif [ x"$x" = x"-fomit-frame-pointer" ] || [ x"$x" = x"-fno-omit-frame-pointer" ]; then
|
||||
FRAME=$x
|
||||
continue
|
||||
fi
|
||||
set -- "$@" "$x"
|
||||
done
|
||||
|
||||
if [ x"$OPT" != x"-Os" ]; then
|
||||
# support --ftrace unless optimizing for size
|
||||
CFLAGS="$CFLAGS -fpatchable-function-entry=18,16"
|
||||
fi
|
||||
|
||||
LINKING=
|
||||
if [ "$HAS_E" = "1" ]; then
|
||||
set -- $CPPFLAGS "$@"
|
||||
set -- $CCFLAGS $CPPFLAGS "$@"
|
||||
elif [ "$HAS_C" = "1" ]; then
|
||||
set -- $CFLAGS $CPPFLAGS "$@" -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer
|
||||
set -- $CCFLAGS $CFLAGS $CPPFLAGS "$@" $FRAME
|
||||
else
|
||||
set -- $LDFLAGS $CFLAGS $CPPFLAGS "$@" $LDLIBS -Wl,-z,common-page-size=65536 -Wl,-z,max-page-size=65536
|
||||
LINKING=1
|
||||
set -- $LDFLAGS $CFLAGS $CPPFLAGS "$@" $LDLIBS -Wl,-z,common-page-size=65536 -Wl,-z,max-page-size=65536 $FRAME
|
||||
fi
|
||||
|
||||
set -- "$CC" "$@"
|
||||
printf '(cd %s; %s)\n' "$PWD" "$*" >>/tmp/build.log
|
||||
exec "$@"
|
||||
"$@" || exit
|
||||
|
||||
if [ -n "$LINKING" ] && [ x"$OUTPUT" != x"" ]; then
|
||||
if [ x"$OUTPUT" != x"${OUTPUT%.com}" ] ||
|
||||
[ x"$OUTPUT" != x"${OUTPUT%.exe}" ]; then
|
||||
# cosmocc -o foo.com ...
|
||||
# -> foo.com (ape)
|
||||
# -> foo.com.dbg (elf)
|
||||
mv -f "$OUTPUT" "$OUTPUT.dbg" || exit
|
||||
"$OBJCOPY" -S -O binary "$OUTPUT.dbg" "$OUTPUT" || exit
|
||||
else
|
||||
# cosmocc -o foo ...
|
||||
# -> foo (elf)
|
||||
# -> foo.com (ape)
|
||||
# -> foo.com.dbg (elf)
|
||||
cp -f "$OUTPUT" "$OUTPUT.com.dbg" || exit
|
||||
"$OBJCOPY" -S -O binary "$OUTPUT" "$OUTPUT.com" || exit
|
||||
fi
|
||||
fi
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue