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| 1 | +#include <stdio.h> |
| 2 | +#include <string.h> |
| 3 | +#include <stdlib.h> |
| 4 | +#include <stdbool.h> |
| 5 | + |
| 6 | +static const char *get_c_compiler(void) { |
| 7 | + const char *cc = getenv("CC"); |
| 8 | + return (cc == NULL) ? "cc" : cc; |
| 9 | +} |
| 10 | + |
| 11 | +static void panic(const char *reason) { |
| 12 | + fprintf(stderr, "%s\n", reason); |
| 13 | + abort(); |
| 14 | +} |
| 15 | + |
| 16 | +#if defined(__WIN32__) |
| 17 | +#error TODO write the functionality for executing child process into this build script |
| 18 | +#else |
| 19 | + |
| 20 | +#include <unistd.h> |
| 21 | +#include <errno.h> |
| 22 | +#include <sys/wait.h> |
| 23 | + |
| 24 | +static void run(char **argv) { |
| 25 | + pid_t pid = fork(); |
| 26 | + if (pid == -1) |
| 27 | + panic("fork failed"); |
| 28 | + if (pid == 0) { |
| 29 | + // child |
| 30 | + execvp(argv[0], argv); |
| 31 | + exit(1); |
| 32 | + } |
| 33 | + |
| 34 | + // parent |
| 35 | + |
| 36 | + int status; |
| 37 | + waitpid(pid, &status, 0); |
| 38 | + |
| 39 | + if (!WIFEXITED(status)) |
| 40 | + panic("child process crashed"); |
| 41 | + |
| 42 | + if (WEXITSTATUS(status) != 0) |
| 43 | + panic("child process failed"); |
| 44 | +} |
| 45 | + |
| 46 | +static void run_execv(char **argv) { |
| 47 | + if (execv(argv[0], argv) == -1 && errno == ENOENT) return; |
| 48 | + perror("execv failed"); |
| 49 | +} |
| 50 | +#endif |
| 51 | + |
| 52 | +static void print_and_run(const char **argv) { |
| 53 | + fprintf(stderr, "%s", argv[0]); |
| 54 | + for (const char **arg = argv + 1; *arg; arg += 1) { |
| 55 | + fprintf(stderr, " %s", *arg); |
| 56 | + } |
| 57 | + fprintf(stderr, "\n"); |
| 58 | + run((char **)argv); |
| 59 | +} |
| 60 | + |
| 61 | +static const char *get_host_os(void) { |
| 62 | +#if defined(__WIN32__) |
| 63 | + return "windows"; |
| 64 | +#elif defined(__APPLE__) |
| 65 | + return "macos"; |
| 66 | +#elif defined(__linux__) |
| 67 | + return "linux"; |
| 68 | +#else |
| 69 | +#error TODO implement get_host_os in this build script for this target |
| 70 | +#endif |
| 71 | +} |
| 72 | + |
| 73 | +static const char *get_host_arch(void) { |
| 74 | +#if defined(__x86_64__ ) |
| 75 | + return "x86_64"; |
| 76 | +#elif defined(__aarch64__) |
| 77 | + return "aarch64"; |
| 78 | +#else |
| 79 | +#error TODO implement get_host_arch in this build script for this target |
| 80 | +#endif |
| 81 | +} |
| 82 | + |
| 83 | +static const char *get_host_triple(void) { |
| 84 | + static char global_buffer[100]; |
| 85 | + sprintf(global_buffer, "%s-%s", get_host_arch(), get_host_os()); |
| 86 | + return global_buffer; |
| 87 | +} |
| 88 | + |
| 89 | +int main(int argc, char **argv) { |
| 90 | + argv[0] = "./zig2"; |
| 91 | + run_execv(argv); |
| 92 | + |
| 93 | + const char *cc = get_c_compiler(); |
| 94 | + const char *host_triple = get_host_triple(); |
| 95 | + |
| 96 | + { |
| 97 | + const char *child_argv[] = { |
| 98 | + cc, "-o", "zig-wasm2c", "stage1/wasm2c.c", "-O2", "-std=c99", NULL, |
| 99 | + }; |
| 100 | + print_and_run(child_argv); |
| 101 | + } |
| 102 | + { |
| 103 | + const char *child_argv[] = { |
| 104 | + "./zig-wasm2c", "stage1/zig1.wasm", "zig1.c", NULL, |
| 105 | + }; |
| 106 | + print_and_run(child_argv); |
| 107 | + } |
| 108 | + { |
| 109 | + const char *child_argv[] = { |
| 110 | + cc, "-o", "zig1", "zig1.c", "stage1/wasi.c", "-std=c99", "-Os", "-lm", NULL, |
| 111 | + }; |
| 112 | + print_and_run(child_argv); |
| 113 | + } |
| 114 | + { |
| 115 | + FILE *f = fopen("config.zig", "wb"); |
| 116 | + if (f == NULL) |
| 117 | + panic("unable to open config.zig for writing"); |
| 118 | + |
| 119 | + const char *zig_version = "0.12.0-dev.bootstrap"; |
| 120 | + |
| 121 | + int written = fprintf(f, |
| 122 | + "pub const have_llvm = false;\n" |
| 123 | + "pub const llvm_has_m68k = false;\n" |
| 124 | + "pub const llvm_has_csky = false;\n" |
| 125 | + "pub const llvm_has_arc = false;\n" |
| 126 | + "pub const llvm_has_xtensa = false;\n" |
| 127 | + "pub const version: [:0]const u8 = \"%s\";\n" |
| 128 | + "pub const semver = @import(\"std\").SemanticVersion.parse(version) catch unreachable;\n" |
| 129 | + "pub const enable_logging: bool = false;\n" |
| 130 | + "pub const enable_link_snapshots: bool = false;\n" |
| 131 | + "pub const enable_tracy = false;\n" |
| 132 | + "pub const value_tracing = false;\n" |
| 133 | + "pub const skip_non_native = false;\n" |
| 134 | + "pub const only_c = false;\n" |
| 135 | + "pub const force_gpa = false;\n" |
| 136 | + "pub const only_core_functionality = true;\n" |
| 137 | + "pub const only_reduce = false;\n" |
| 138 | + , zig_version); |
| 139 | + if (written < 100) |
| 140 | + panic("unable to write to config.zig file"); |
| 141 | + if (fclose(f) != 0) |
| 142 | + panic("unable to finish writing to config.zig file"); |
| 143 | + } |
| 144 | + |
| 145 | + { |
| 146 | + const char *child_argv[] = { |
| 147 | + "./zig1", "lib", "build-exe", "src/main.zig", |
| 148 | + "-ofmt=c", "-lc", "-OReleaseSmall", |
| 149 | + "--name", "zig2", "-femit-bin=zig2.c", |
| 150 | + "--mod", "build_options::config.zig", |
| 151 | + "--mod", "Builtins/Builtin.def::src/stubs/aro_builtins.zig", |
| 152 | + "--mod", "Attribute/names.def::src/stubs/aro_names.zig", |
| 153 | + "--mod", "aro:Builtins/Builtin.def,Attribute/names.def:deps/aro/lib.zig", |
| 154 | + "--deps", "build_options,aro", |
| 155 | + "-target", host_triple, |
| 156 | + NULL, |
| 157 | + }; |
| 158 | + print_and_run(child_argv); |
| 159 | + } |
| 160 | + |
| 161 | + { |
| 162 | + const char *child_argv[] = { |
| 163 | + "./zig1", "lib", "build-obj", "lib/compiler_rt.zig", |
| 164 | + "-ofmt=c", "-OReleaseSmall", |
| 165 | + "--name", "compiler_rt", "-femit-bin=compiler_rt.c", |
| 166 | + "--mod", "build_options::config.zig", |
| 167 | + "--deps", "build_options", |
| 168 | + "-target", host_triple, |
| 169 | + NULL, |
| 170 | + }; |
| 171 | + print_and_run(child_argv); |
| 172 | + } |
| 173 | + |
| 174 | + { |
| 175 | + const char *child_argv[] = { |
| 176 | + cc, "-o", "zig2", "zig2.c", "compiler_rt.c", |
| 177 | + "-std=c99", "-O2", "-fno-stack-protector", |
| 178 | + "-Istage1", |
| 179 | +#if defined(__APPLE__) |
| 180 | + "-Wl,-stack_size,0x10000000", |
| 181 | +#else |
| 182 | + "-Wl,-z,stack-size=0x10000000", |
| 183 | +#endif |
| 184 | +#if defined(__GNUC__) |
| 185 | + "-pthread", |
| 186 | +#endif |
| 187 | + NULL, |
| 188 | + }; |
| 189 | + print_and_run(child_argv); |
| 190 | + } |
| 191 | + |
| 192 | + run_execv(argv); |
| 193 | + panic("build script failed to create valid zig2 executable"); |
| 194 | +} |
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