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Introduce cosmocc flags -mdbg -mtiny -moptlinux

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The cosmocc.zip toolchain will now include four builds of the libcosmo.a
runtime libraries. You can pass the -mdbg flag if you want to debug your
cosmopolitan runtime. You can pass the -moptlinux flag if you don't want
windows code lurking in your binary. See tool/cosmocc/README.md for more
details on how these flags may be used and their important implications.
This commit is contained in:
Justine Tunney 2024-07-26 05:10:25 -07:00
parent 59692b0882
commit 642e9cb91a
No known key found for this signature in database
GPG key ID: BE714B4575D6E328
22 changed files with 404 additions and 56 deletions
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12
libc/proc/posix_spawn.c
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@ -22,7 +22,6 @@
#include "libc/calls/calls.h"
#include "libc/calls/internal.h"
#include "libc/calls/state.internal.h"
#include "libc/intrin/fds.h"
#include "libc/calls/struct/rlimit.h"
#include "libc/calls/struct/rlimit.internal.h"
#include "libc/calls/struct/rusage.internal.h"
@ -39,6 +38,7 @@
#include "libc/intrin/bsf.h"
#include "libc/intrin/describeflags.h"
#include "libc/intrin/dll.h"
#include "libc/intrin/fds.h"
#include "libc/intrin/strace.h"
#include "libc/intrin/weaken.h"
#include "libc/mem/alloca.h"
@ -95,6 +95,10 @@
#define CLOSER_CONTAINER(e) DLL_CONTAINER(struct Closer, elem, e)
static atomic_bool has_vfork; // i.e. not qemu/wsl/xnu/openbsd
#ifdef __x86_64__
struct Closer {
int64_t handle;
struct Dll elem;
@ -106,8 +110,6 @@ struct SpawnFds {
struct Dll *closers;
};
static atomic_bool has_vfork; // i.e. not qemu/wsl/xnu/openbsd
static textwindows int64_t spawnfds_handle(struct SpawnFds *fds, int fd) {
if (__is_cloexec(fds->p + fd))
return -1;
@ -429,6 +431,8 @@ static textwindows dontinline errno_t posix_spawn_nt(
return err;
}
#endif // __x86_64__
/**
* Spawns process, the POSIX way, e.g.
*
@ -482,8 +486,10 @@ errno_t posix_spawn(int *pid, const char *path,
const posix_spawn_file_actions_t *file_actions,
const posix_spawnattr_t *attrp, char *const argv[],
char *const envp[]) {
#ifdef __x86_64__
if (IsWindows())
return posix_spawn_nt(pid, path, file_actions, attrp, argv, envp);
#endif
int pfds[2];
bool use_pipe;
volatile int status = 0;