hello world example working
parent
925c805d4b
commit
fefbee166d
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@ -31,6 +31,7 @@ set(ZIG_SOURCES
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"${CMAKE_SOURCE_DIR}/src/util.cpp"
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"${CMAKE_SOURCE_DIR}/src/codegen.cpp"
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"${CMAKE_SOURCE_DIR}/src/zig_llvm.cpp"
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"${CMAKE_SOURCE_DIR}/src/os.cpp"
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)
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set(CONFIGURE_OUT_FILE "${CMAKE_BINARY_DIR}/config.h")
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@ -8,6 +8,7 @@
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#include "codegen.hpp"
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#include "hash_map.hpp"
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#include "zig_llvm.hpp"
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#include "os.hpp"
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#include <stdio.h>
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@ -422,7 +423,18 @@ void code_gen_link(CodeGen *g, bool is_static, const char *out_file) {
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LLVMTargetMachineRef target_machine = LLVMCreateTargetMachine(target_ref, native_triple,
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native_cpu, native_features, opt_level, reloc_mode, LLVMCodeModelDefault);
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if (LLVMTargetMachineEmitToFile(target_machine, g->mod, strdup(out_file), LLVMObjectFile, &err_msg)) {
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Buf out_file_o = {0};
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buf_init_from_str(&out_file_o, out_file);
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buf_append_str(&out_file_o, ".o");
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if (LLVMTargetMachineEmitToFile(target_machine, g->mod, buf_ptr(&out_file_o), LLVMObjectFile, &err_msg)) {
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zig_panic("unable to write object file: %s", err_msg);
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}
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ZigList<const char *> args = {0};
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args.append("-o");
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args.append(out_file);
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args.append((const char *)buf_ptr(&out_file_o));
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args.append("-lc");
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os_spawn_process("ld", args, false);
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}
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@ -0,0 +1,33 @@
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/*
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* Copyright (c) 2015 Andrew Kelley
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*
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* This file is part of zig, which is MIT licensed.
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* See http://opensource.org/licenses/MIT
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*/
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#include "os.hpp"
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#include "util.hpp"
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#include <unistd.h>
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#include <errno.h>
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void os_spawn_process(const char *exe, ZigList<const char *> &args, bool detached) {
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pid_t pid = fork();
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if (pid == -1)
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zig_panic("fork failed");
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if (pid != 0)
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return;
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if (detached) {
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if (setsid() == -1)
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zig_panic("process detach failed");
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}
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const char **argv = allocate<const char *>(args.length + 2);
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argv[0] = exe;
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argv[args.length + 1] = nullptr;
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for (int i = 0; i < args.length; i += 1) {
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argv[i + 1] = args.at(i);
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}
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execvp(exe, const_cast<char * const *>(argv));
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zig_panic("execvp failed: %s", strerror(errno));
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}
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@ -0,0 +1,16 @@
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/*
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* Copyright (c) 2015 Andrew Kelley
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*
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* This file is part of zig, which is MIT licensed.
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* See http://opensource.org/licenses/MIT
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*/
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#ifndef ZIG_OS_HPP
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#define ZIG_OS_HPP
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#include "list.hpp"
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#include "buffer.hpp"
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void os_spawn_process(const char *exe, ZigList<const char *> &args, bool detached);
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#endif
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@ -1,3 +1,3 @@
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pub fn add(a: int, b: int) -> int {
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a + b
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export fn add(a: i32, b: i32) -> i32 {
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return a + b;
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}
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