interpret the WASI blob to produce zig2.c and compiler_rt.c

 * synchronize zig1.c from zig-wasi external project
 * change the way argv works to avoid absolute paths
 * autodetect isatty
 * compiler_rt: disable some functions when object format is C
 * add missing flag from config.zig.in

The next problem is that compiling compiler_rt.c with gcc gives
"conflicting types" errors for `__eqhf2` and friends.

1 files changed, 14 insertions, 12 deletions

diff --git a/lib/compiler_rt.zig b/lib/compiler_rt.zig
index 44146d04e9..3ffaf9f0e5 100644
--- a/lib/compiler_rt.zig
+++ b/lib/compiler_rt.zig
@@ -3,13 +3,6 @@ const builtin = @import("builtin");
 pub const panic = @import("compiler_rt/common.zig").panic;
 
 comptime {
-    _ = @import("compiler_rt/atomics.zig");
-
-    // macOS has these functions inside libSystem.
-    if (builtin.cpu.arch.isAARCH64() and !builtin.os.tag.isDarwin()) {
-        _ = @import("compiler_rt/aarch64_outline_atomics.zig");
-    }
-
     _ = @import("compiler_rt/addf3.zig");
     _ = @import("compiler_rt/addhf3.zig");
     _ = @import("compiler_rt/addsf3.zig");
@@ -216,9 +209,18 @@ comptime {
     _ = @import("compiler_rt/aullrem.zig");
     _ = @import("compiler_rt/clear_cache.zig");
 
-    _ = @import("compiler_rt/memcpy.zig");
-    _ = @import("compiler_rt/memset.zig");
-    _ = @import("compiler_rt/memmove.zig");
-    _ = @import("compiler_rt/memcmp.zig");
-    _ = @import("compiler_rt/bcmp.zig");
+    if (@import("builtin").object_format != .c) {
+        _ = @import("compiler_rt/atomics.zig");
+
+        // macOS has these functions inside libSystem.
+        if (builtin.cpu.arch.isAARCH64() and !builtin.os.tag.isDarwin()) {
+            _ = @import("compiler_rt/aarch64_outline_atomics.zig");
+        }
+
+        _ = @import("compiler_rt/memcpy.zig");
+        _ = @import("compiler_rt/memset.zig");
+        _ = @import("compiler_rt/memmove.zig");
+        _ = @import("compiler_rt/memcmp.zig");
+        _ = @import("compiler_rt/bcmp.zig");
+    }
 }