Drop ability to generate executables from qjsc (#76)

It's too brittle, and compiling the result is one command away.
This commit is contained in:
Saúl Ibarra Corretgé 2023-11-17 23:56:22 +01:00 committed by GitHub
parent d6a334233c
commit bebdfcea48
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
2 changed files with 12 additions and 141 deletions

View file

@ -158,7 +158,7 @@ target_link_libraries(qjsc ${qjs_libs})
add_custom_command(
OUTPUT repl.c
COMMAND "${CMAKE_CURRENT_BINARY_DIR}/qjsc" -c -o ./repl.c -m ${CMAKE_CURRENT_SOURCE_DIR}/repl.js
COMMAND "${CMAKE_CURRENT_BINARY_DIR}/qjsc" -o ./repl.c -m ${CMAKE_CURRENT_SOURCE_DIR}/repl.js
DEPENDS qjsc
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
COMMENT "Compile repl.js to bytecode"

151
qjsc.c
View file

@ -2,6 +2,8 @@
* QuickJS command line compiler
*
* Copyright (c) 2018-2021 Fabrice Bellard
* Copyright (c) 2023 Ben Noordhuis
* Copyright (c) 2023 Saúl Ibarra Corretgé
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
@ -29,9 +31,6 @@
#include <assert.h>
#include <unistd.h>
#include <errno.h>
#if !defined(_WIN32)
#include <sys/wait.h>
#endif
#include "cutils.h"
#include "quickjs-libc.h"
@ -59,7 +58,6 @@ static namelist_t init_module_list;
static uint64_t feature_bitmap;
static FILE *outfile;
static BOOL byte_swap;
static BOOL dynamic_export;
static const char *c_ident_prefix = "qjsc_";
#define FE_ALL (-1)
@ -240,12 +238,9 @@ JSModuleDef *jsc_module_loader(JSContext *ctx,
/* create a dummy module */
m = JS_NewCModule(ctx, module_name, js_module_dummy_init);
} else if (has_suffix(module_name, ".so")) {
fprintf(stderr, "Warning: binary module '%s' will be dynamically loaded\n", module_name);
/* create a dummy module */
m = JS_NewCModule(ctx, module_name, js_module_dummy_init);
/* the resulting executable will export its symbols for the
dynamic library */
dynamic_export = TRUE;
JS_ThrowReferenceError(ctx, "%s: dynamically linking to shared libraries not supported",
module_name);
return NULL;
} else {
size_t buf_len;
uint8_t *buf;
@ -343,8 +338,7 @@ void help(void)
"usage: " PROG_NAME " [options] [files]\n"
"\n"
"options are:\n"
"-c only output bytecode in a C file\n"
"-e output main() and bytecode in a C file (default = executable output)\n"
"-e output main() and bytecode in a C file\n"
"-o output set the output filename\n"
"-N cname set the C name of the generated data\n"
"-m compile as Javascript module (default=autodetect)\n"
@ -372,111 +366,9 @@ void help(void)
exit(1);
}
#if defined(CONFIG_CC) && !defined(_WIN32)
int exec_cmd(char **argv)
{
int pid, status, ret;
pid = fork();
if (pid == 0) {
execvp(argv[0], argv);
exit(1);
}
for(;;) {
ret = waitpid(pid, &status, 0);
if (ret == pid && WIFEXITED(status))
break;
}
return WEXITSTATUS(status);
}
static int output_executable(const char *out_filename, const char *cfilename,
BOOL use_lto, BOOL verbose, const char *exename)
{
const char *argv[64];
const char **arg, *bn_suffix, *lto_suffix;
char libjsname[1024];
char exe_dir[1024], inc_dir[1024], lib_dir[1024], buf[1024], *p;
int ret;
/* get the directory of the executable */
pstrcpy(exe_dir, sizeof(exe_dir), exename);
p = strrchr(exe_dir, '/');
if (p) {
*p = '\0';
} else {
pstrcpy(exe_dir, sizeof(exe_dir), ".");
}
/* if 'quickjs.h' is present at the same path as the executable, we
use it as include and lib directory */
snprintf(buf, sizeof(buf), "%s/quickjs.h", exe_dir);
if (access(buf, R_OK) == 0) {
pstrcpy(inc_dir, sizeof(inc_dir), exe_dir);
pstrcpy(lib_dir, sizeof(lib_dir), exe_dir);
} else {
snprintf(inc_dir, sizeof(inc_dir), "%s/include/quickjs", CONFIG_PREFIX);
snprintf(lib_dir, sizeof(lib_dir), "%s/lib/quickjs", CONFIG_PREFIX);
}
lto_suffix = "";
bn_suffix = "";
arg = argv;
*arg++ = CONFIG_CC;
*arg++ = "-O2";
#ifdef CONFIG_LTO
if (use_lto) {
*arg++ = "-flto";
lto_suffix = ".lto";
}
#endif
/* XXX: use the executable path to find the includes files and
libraries */
*arg++ = "-D";
*arg++ = "_GNU_SOURCE";
*arg++ = "-I";
*arg++ = inc_dir;
*arg++ = "-o";
*arg++ = out_filename;
if (dynamic_export)
*arg++ = "-rdynamic";
*arg++ = cfilename;
snprintf(libjsname, sizeof(libjsname), "%s/libquickjs%s%s.a",
lib_dir, bn_suffix, lto_suffix);
*arg++ = libjsname;
*arg++ = "-lm";
*arg++ = "-ldl";
*arg++ = "-lpthread";
*arg = NULL;
if (verbose) {
for(arg = argv; *arg != NULL; arg++)
printf("%s ", *arg);
printf("\n");
}
ret = exec_cmd((char **)argv);
unlink(cfilename);
return ret;
}
#else
static int output_executable(const char *out_filename, const char *cfilename,
BOOL use_lto, BOOL verbose, const char *exename)
{
fprintf(stderr, "Executable output is not supported for this target\n");
exit(1);
return 0;
}
#endif
typedef enum {
OUTPUT_C,
OUTPUT_C_MAIN,
OUTPUT_EXECUTABLE,
} OutputTypeEnum;
int main(int argc, char **argv)
@ -494,7 +386,7 @@ int main(int argc, char **argv)
namelist_t dynamic_module_list;
out_filename = NULL;
output_type = OUTPUT_EXECUTABLE;
output_type = OUTPUT_C;
cname = NULL;
feature_bitmap = FE_ALL;
module = -1;
@ -509,7 +401,7 @@ int main(int argc, char **argv)
namelist_add(&cmodule_list, "os", "os", 0);
for(;;) {
c = getopt(argc, argv, "ho:cN:f:mxevM:p:S:D:");
c = getopt(argc, argv, "ho:N:f:mxevM:p:S:D:");
if (c == -1)
break;
switch(c) {
@ -518,9 +410,6 @@ int main(int argc, char **argv)
case 'o':
out_filename = optarg;
break;
case 'c':
output_type = OUTPUT_C;
break;
case 'e':
output_type = OUTPUT_C_MAIN;
break;
@ -592,24 +481,10 @@ int main(int argc, char **argv)
if (optind >= argc)
help();
if (!out_filename) {
if (output_type == OUTPUT_EXECUTABLE) {
out_filename = "a.out";
} else {
out_filename = "out.c";
}
}
if (!out_filename)
out_filename = "out.c";
if (output_type == OUTPUT_EXECUTABLE) {
#if defined(_WIN32) || defined(__ANDROID__)
/* XXX: find a /tmp directory ? */
snprintf(cfilename, sizeof(cfilename), "out%d.c", getpid());
#else
snprintf(cfilename, sizeof(cfilename), "/tmp/out%d.c", getpid());
#endif
} else {
pstrcpy(cfilename, sizeof(cfilename), out_filename);
}
pstrcpy(cfilename, sizeof(cfilename), out_filename);
fo = fopen(cfilename, "w");
if (!fo) {
@ -723,10 +598,6 @@ int main(int argc, char **argv)
fclose(fo);
if (output_type == OUTPUT_EXECUTABLE) {
return output_executable(out_filename, cfilename, use_lto, verbose,
argv[0]);
}
namelist_free(&cname_list);
namelist_free(&cmodule_list);
namelist_free(&init_module_list);