2 files changed, 169 insertions, 0 deletions
diff --git a/vere/ext/sigsegv/build.zig b/vere/ext/sigsegv/build.zig
new file mode 100644
index 0000000..d7f8859
--- /dev/null
+++ b/vere/ext/sigsegv/build.zig
@@ -0,0 +1,151 @@
+const std = @import("std");
+
+pub fn build(b: *std.Build) void {
+    const target = b.standardTargetOptions(.{});
+    const optimize = b.standardOptimizeOption(.{});
+    const t = target.result;
+
+    const dep_c = b.dependency("sigsegv", .{
+        .target = target,
+        .optimize = optimize,
+    });
+
+    const lib = b.addStaticLibrary(.{
+        .name = "sigsegv",
+        .target = target,
+        .optimize = optimize,
+    });
+
+    if (target.result.os.tag.isDarwin() and !target.query.isNative()) {
+        const macos_sdk = b.lazyDependency("macos_sdk", .{
+            .target = target,
+            .optimize = optimize,
+        });
+        if (macos_sdk != null) {
+            lib.addSystemIncludePath(macos_sdk.?.path("usr/include"));
+            lib.addLibraryPath(macos_sdk.?.path("usr/lib"));
+            lib.addFrameworkPath(macos_sdk.?.path("System/Library/Frameworks"));
+        }
+    }
+
+    lib.linkLibC();
+
+    lib.root_module.addCMacro("HAVE_CONFIG_H", &[_]u8{});
+
+    const config_h = b.addConfigHeader(.{
+        .style = .{
+            .autoconf = dep_c.path("config.h.in"),
+        },
+        .include_path = "config.h",
+    }, .{
+        .ENABLE_EFAULT = null,
+        .HAVE_DLFCN_H = 1,
+        .HAVE_EFAULT_SUPPORT = null,
+        .HAVE_GETPAGESIZE = 1,
+        .HAVE_GETRLIMIT = 1,
+        .HAVE_INTTYPES_H = 1,
+        .HAVE_MINCORE = 1,
+        .HAVE_MMAP_ANON = 1,
+        .HAVE_MMAP_ANONYMOUS = 1,
+        .HAVE_MMAP_DEVZERO = null,
+        .HAVE_MQUERY = null,
+        .HAVE_PAGESIZE = null,
+        .HAVE_SETRLIMIT = 1,
+        .HAVE_SIGALTSTACK = 1,
+        .HAVE_STACKVMA = @intFromBool(!(t.os.tag == .linux)),
+        .HAVE_STDINT_H = 1,
+        .HAVE_STDIO_H = 1,
+        .HAVE_STDLIB_H = 1,
+        .HAVE_STRINGS_H = 1,
+        .HAVE_STRING_H = 1,
+        .HAVE_SYSCONF_PAGESIZE = null,
+        .HAVE_SYS_SIGNAL_H = 1,
+        .HAVE_SYS_STAT_H = 1,
+        .HAVE_SYS_TYPES_H = 1,
+        .HAVE_UCONTEXT_H = null,
+        .HAVE_UINTPTR_T = 1,
+        .HAVE_UNISTD_H = 1,
+        .HAVE_WORKING_SIGALTSTACK = 1,
+        .LT_OBJDIR = null,
+        .OLD_CYGWIN_WORKAROUND = null,
+        .PACKAGE = null,
+        .PACKAGE_BUGREPORT = null,
+        .PACKAGE_NAME = null,
+        .PACKAGE_STRING = null,
+        .PACKAGE_TARNAME = null,
+        .PACKAGE_URL = null,
+        .PACKAGE_VERSION = null,
+        .SIGALTSTACK_SS_REVERSED = null,
+        .STACK_DIRECTION = -1,
+        .STDC_HEADERS = 1,
+        .VERSION = null,
+        .stack_t = null,
+        .uintptr_t = null,
+    });
+
+    if ((t.os.tag == .macos)) {
+        config_h.addValues(.{
+            .CFG_FAULT = if (t.cpu.arch == .aarch64)
+                "fault-macos-arm64.h"
+            else
+                "fault-macos-i386.h",
+            .CFG_HANDLER = "handler-unix.c",
+            .CFG_LEAVE = "leave-nop.c",
+            .CFG_MACHFAULT = "fault-none.h",
+            .CFG_SIGNALS = "signals-macos.h",
+            .CFG_STACKVMA = "stackvma-mach.c",
+        });
+    }
+
+    if ((t.os.tag == .linux)) {
+        config_h.addValues(.{
+            .CFG_FAULT = if (t.cpu.arch == .aarch64)
+                "fault-linux-arm.h"
+            else
+                "fault-linux-i386.h",
+            .CFG_HANDLER = "handler-unix.c",
+            .CFG_LEAVE = "leave-nop.c",
+            .CFG_MACHFAULT = "fault-none.h",
+            .CFG_SIGNALS = "signals.h",
+            .CFG_STACKVMA = "stackvma-none.c",
+        });
+    }
+
+    const sigsegv_h = b.addConfigHeader(.{
+        .style = .{
+            .cmake = dep_c.path("src/sigsegv.h.in"),
+        },
+        .include_path = "sigsegv.h",
+    }, .{
+        .FAULT_CONTEXT = "ucontext_t",
+        .FAULT_CONTEXT_INCLUDE = if (t.os.tag == .macos)
+            "#include <sys/ucontext.h>"
+        else
+            "#include <ucontext.h>",
+        .HAVE_SIGSEGV_RECOVERY = 1,
+        .HAVE_STACK_OVERFLOW_RECOVERY = 1,
+    });
+
+    lib.addIncludePath(dep_c.path("src"));
+    lib.addConfigHeader(config_h);
+    lib.addConfigHeader(sigsegv_h);
+
+    lib.addCSourceFiles(.{
+        .root = dep_c.path("src"),
+        .files = &.{
+            "dispatcher.c",
+            "handler.c",
+            "leave.c",
+            "stackvma.c",
+            "version.c",
+        },
+        .flags = &.{
+            "-O2",
+            "-fno-sanitize=all",
+        },
+    });
+
+    lib.installConfigHeader(sigsegv_h);
+
+    b.installArtifact(lib);
+}
diff --git a/vere/ext/sigsegv/build.zig.zon b/vere/ext/sigsegv/build.zig.zon
new file mode 100644
index 0000000..39f2c58
--- /dev/null
+++ b/vere/ext/sigsegv/build.zig.zon
@@ -0,0 +1,18 @@
+.{
+    .name = "sigsegv",
+    .version = "0.0.1",
+    .dependencies = .{
+        .macos_sdk = .{
+            .url = "https://github.com/joseluisq/macosx-sdks/releases/download/14.5/MacOSX14.5.sdk.tar.xz",
+            .hash = "N-V-__8AAKtK4FMzqcFsY_ZrpMg9bGH0h7BqZDXtVyAerMtM",
+            .lazy = true,
+        },
+        .sigsegv = .{
+            .url = "https://ftp.fr.openbsd.org/pub/OpenBSD/distfiles/libsigsegv-2.14.tar.gz",
+            .hash = "N-V-__8AAHQhHwCCMyKUtQhO0AMsY182In-wQIwXVhenOql5",
+        },
+    },
+    .paths = .{
+        "",
+    },
+}