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"""
Utils for CMake
Author: https://github.com/klivelinux
"""
import os
import sys
import re
import subprocess
import utils
import rtconfig
from utils import _make_path_relative
def get_zig_version():
try:
result = subprocess.run(['zig', 'version'], capture_output=True, text=True)
version_str = result.stdout.strip()
parts = version_str.split('.')
major = int(parts[0])
minor = int(parts[1]) if len(parts) > 1 else 0
return (major, minor)
except Exception:
return (0, 0)
ZIG_VERSION = get_zig_version()
IS_ZIG_0_14_PLUS = ZIG_VERSION[0] > 0 or (ZIG_VERSION[0] == 0 and ZIG_VERSION[1] >= 14)
def GenerateCFiles(env,project):
info = utils.ProjectInfo(env)
ARCH = ".thumb" if rtconfig.CPU in ['cortex-m0', 'cortex-m3', 'cortex-m4', 'cortex-m7','cortex-m23','cortex-m33','cortex-m85'] else ".arm"
CFLAGS = rtconfig.CFLAGS.replace('\\', "/").replace('\"', "\\\"")
LFLAGS = rtconfig.LFLAGS.replace('\\', "/").replace('\"', "\\\"")
zig_file = open('build.zig', 'w')
if zig_file:
zig_file.write("const std = @import(\"std\");\n\n")
if IS_ZIG_0_14_PLUS:
zig_file.write("const target = std.Target.Query{\n")
zig_file.write(" .cpu_arch = {},\n".format(ARCH))
zig_file.write(" .cpu_model = .{{ .explicit = &std.Target.{}.cpu.{} }},\n".format(rtconfig.ARCH, rtconfig.CPU.replace('-', '_')))
zig_file.write(" .os_tag = .freestanding,\n")
if ARCH == ".thumb":
zig_file.write(" .abi = .eabihf,\n")
else:
zig_file.write(" .abi = .eabi,\n")
zig_file.write("};\n\n")
else:
zig_file.write("const target = std.zig.CrossTarget{\n")
zig_file.write(" .cpu_arch = {},\n".format(ARCH))
zig_file.write(" .cpu_model = .{{ .explicit = &std.Target.{}.cpu.{} }},\n".format(rtconfig.ARCH, rtconfig.CPU.replace('-', '_')))
zig_file.write(" .os_tag = .freestanding,\n")
zig_file.write(" .abi = .eabi,\n")
zig_file.write("};\n\n")
zig_file.write("const c_includes = [_][]const u8{\n")
for i in info['CPPPATH']:
# use relative path
path = _make_path_relative(os.getcwd(), i)
zig_file.write("\t\"{}\",\n".format(path.replace("\\", "/")))
zig_file.write("};\n\n")
zig_file.write("const c_sources = [_][]const u8{\n")
for group in project:
for f in group['src']:
# use relative path
path = _make_path_relative(os.getcwd(), os.path.normpath(f.rfile().abspath))
zig_file.write("\t\"{}\",\n".format(path.replace("\\", "/")))
zig_file.write("};\n\n")
zig_file.write("const c_flags = [_][]const u8{\n")
zig_file.write("\t\"-std=c99\",\n")
zig_file.write("\t\"-ffunction-sections\",\n")
zig_file.write("\t\"-fdata-sections\",\n")
# conver CDefines to CFlags
for i in info['CPPDEFINES']:
zig_file.write("\t\"-D{}\",\n".format(i))
# conver LocalCDefines to CFlags
for group in project:
if 'LOCAL_CPPDEFINES' in group and group['LOCAL_CPPDEFINES']:
for i in group['LOCAL_CPPDEFINES']:
zig_file.write("\t\"-D{}\",\n".format(i))
zig_file.write("};\n\n")
zig_file.write("pub fn build(b: *std.Build) void {\n")
zig_file.write(" const optimize = .ReleaseSmall;\n\n")
if IS_ZIG_0_14_PLUS:
zig_file.write(" const root_module = b.createModule(.{\n")
zig_file.write(" .root_source_file = null,\n")
zig_file.write(" .target = b.resolveTargetQuery(target),\n")
zig_file.write(" .optimize = optimize,\n")
zig_file.write(" .strip = false,\n")
zig_file.write(" });\n\n")
zig_file.write(" root_module.addCSourceFiles(.{ .files = &c_sources, .flags = &c_flags });\n")
zig_file.write(" for (c_includes) |include| {\n")
zig_file.write(" root_module.addIncludePath(b.path(include));\n")
zig_file.write(" }\n\n")
zig_file.write(" const elf = b.addExecutable(.{\n")
zig_file.write(" .name = \"rtthread.elf\",\n")
zig_file.write(" .root_module = root_module,\n")
zig_file.write(" });\n\n")
else:
zig_file.write(" const elf = b.addExecutable(.{\n")
zig_file.write(" .name = \"rtthread.elf\",\n")
zig_file.write(" .target = b.resolveTargetQuery(target),\n")
zig_file.write(" .optimize = optimize,\n")
zig_file.write(" .strip = false,\n")
zig_file.write(" });\n\n")
zig_file.write(" elf.entry = .{ .symbol_name = \"Reset_Handler\" };\n\n")
# find link script in rtconfig.LFLAGS
LINK_SCRIPT = re.search(r'-T\s*(\S+)', LFLAGS)
zig_file.write(" elf.setLinkerScript(b.path(\"{}\"));\n".format(LINK_SCRIPT.group(1)))
zig_file.write(" const copy_elf = b.addInstallArtifact(elf, .{});\n")
zig_file.write(" b.default_step.dependOn(©_elf.step);\n\n")
zig_file.write(" const bin = b.addObjCopy(elf.getEmittedBin(), .{ .format = .bin });\n")
zig_file.write(" bin.step.dependOn(&elf.step);\n")
zig_file.write(" const copy_bin = b.addInstallBinFile(bin.getOutput(), \"rtthread.bin\");\n")
zig_file.write(" b.default_step.dependOn(©_bin.step);\n")
zig_file.write("}\n")
zig_file.close()
return
def ZigBuildProject(env,project):
version_str = "{}.{}".format(ZIG_VERSION[0], ZIG_VERSION[1])
print('Detected Zig version: {}'.format(version_str))
if IS_ZIG_0_14_PLUS:
print('Using Zig 0.14+ compatible build configuration')
else:
print('Using legacy build configuration')
print('Update setting files for build.zig...')
GenerateCFiles(env,project)
print('Done!')
return
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