Build zlib

Author: agagniere

README.md

@@ -13,4 +13,5 @@ zig fetch --save=re2       git+https://github.com/google/re2#2022-04-01
 zig fetch --save=boringssl git+https://github.com/google/boringssl#c63fadbde60a2224c22189d14c4001bbd2a3a629
 zig fetch --save=cares     git+https://github.com/c-ares/c-ares#v1.34.5
 zig fetch --save=gtest     git+https://github.com/google/googletest#v1.17.0
+zig fetch --save=zlib      git+https://github.com/madler/zlib#v1.3.1
 ```

build.zig

@@ -15,6 +15,7 @@ pub fn build(b: *Build) !void {
     const boringssl = b.dependency("boringssl", .{});
     const cares = b.dependency("cares", .{});
     const gtest = b.dependency("gtest", .{});
+    const zlib = b.dependency("zlib", .{});
 
     const libs_step = b.step("dependencies", "Install libraries libgrpc depends on");
 
@@ -111,12 +112,26 @@ pub fn build(b: *Build) !void {
     sslmod.addCSourceFiles(.{
         .root = boringssl.path("src"),
         .files = &file_lists.libboringssl_src,
-        .flags = &cxx_flags,
+        .flags = &(cxx_flags ++ .{"-fno-exceptions"}),
     });
+    sslmod.addCMacro("OPENSSL_NO_ASM", "1");
+    sslmod.addCMacro("_GNU_SOURCE", "1");
+    sslmod.addCMacro("_HAS_EXCEPTIONS", "0");
+    sslmod.addCMacro("NOMINMAX", "1");
     sslmod.addIncludePath(boringssl.path("src/include"));
     libssl.installHeadersDirectory(boringssl.path("src/include/openssl"), "openssl", .{});
     libs_step.dependOn(&b.addInstallArtifact(libssl, .{}).step);
 
+    // zlib
+    const zmod = b.createModule(.{ .target = target, .optimize = optimize });
+    const libz = b.addLibrary(.{ .name = "z", .root_module = zmod });
+    zmod.addCSourceFiles(.{
+        .root = zlib.path(""),
+        .files = &file_lists.libz_src,
+        .flags = &c_flags,
+    });
+    libs_step.dependOn(&b.addInstallArtifact(libz, .{}).step);
+
     // Core library
     const grpc = b.createModule(.{
         .target = target,
@@ -142,6 +157,7 @@ pub fn build(b: *Build) !void {
     grpc.linkLibrary(libabseil);
     grpc.linkLibrary(libupb);
     grpc.linkLibrary(libssl);
+    grpc.linkLibrary(libz);
     if (target.result.os.tag.isDarwin()) {
         grpc.linkFramework("CoreFoundation", .{});
         grpc.addCMacro("OSATOMIC_USE_INLINED", "1");

build.zig.zon

@@ -34,5 +34,9 @@
             .url = "git+https://github.com/google/googletest?ref=v1.17.0#52eb8108c5bdec04579160ae17225d66034bd723",
             .hash = "N-V-__8AAEV8PgDOBc81AuVJQ9XhGo46f-4dlQ7sXar_M0_i",
         },
+        .zlib = .{
+            .url = "git+https://github.com/madler/zlib?ref=v1.3.1#51b7f2abdade71cd9bb0e7a373ef2610ec6f9daf",
+            .hash = "N-V-__8AAB0eQwD-0MdOEBmz7intriBReIsIDNlukNVoNu6o",
+        },
     },
 }

generate.py

@@ -56,6 +56,7 @@ def splitByLanguage(prefix, current):
 filelists |= libgrpc
 filelists['libcares_src'] = [f.split('/', 3)[-1] for f in filelists.pop('LIBCARES_SRC')]
 filelists['libboringssl_src'] = [f.split('/', 3)[-1] for f in filelists.pop('LIBBORINGSSL_SRC')]
+filelists['libz_src'] = [f.split('/', 2)[-1] for f in filelists.pop('LIBZ_SRC')]
 
 for name, files in filelists.items():
     print(name.lower(), file=sys.stderr)

generated.zig

@@ -44,19 +44,6 @@ pub const public_headers_c = .{
     "include/grpc/status.h",
     "include/grpc/support/workaround_list.h",
 };
-pub const libz_src = .{
-    "third_party/zlib/adler32.c",
-    "third_party/zlib/compress.c",
-    "third_party/zlib/crc32.c",
-    "third_party/zlib/deflate.c",
-    "third_party/zlib/infback.c",
-    "third_party/zlib/inffast.c",
-    "third_party/zlib/inflate.c",
-    "third_party/zlib/inftrees.c",
-    "third_party/zlib/trees.c",
-    "third_party/zlib/uncompr.c",
-    "third_party/zlib/zutil.c",
-};
 pub const libgrpc_third_party_abseil_cpp = .{
     "absl/base/internal/cycleclock.cc",
     "absl/base/internal/low_level_alloc.cc",
@@ -1585,3 +1572,16 @@ pub const libboringssl_src = .{
     "ssl/tls_method.cc",
     "ssl/tls_record.cc",
 };
+pub const libz_src = .{
+    "adler32.c",
+    "compress.c",
+    "crc32.c",
+    "deflate.c",
+    "infback.c",
+    "inffast.c",
+    "inflate.c",
+    "inftrees.c",
+    "trees.c",
+    "uncompr.c",
+    "zutil.c",
+};