Patch zlib to fix compatibility with latest Xcode (#18039)
Fixes https://github.com/bazelbuild/bazel/issues/17956
Partial commit for third_party/*, see #17987.
Closes #17987
Signed-off-by: Yun Peng <pcloudy@google.com>
Co-authored-by: Yun Peng <pcloudy@google.com>
diff --git a/third_party/zlib/gzguts.h b/third_party/zlib/gzguts.h
index 57faf37..54f668f 100644
--- a/third_party/zlib/gzguts.h
+++ b/third_party/zlib/gzguts.h
@@ -3,6 +3,10 @@
* For conditions of distribution and use, see copyright notice in zlib.h
*/
+#ifndef _WIN32
+ #include <unistd.h>
+#endif
+
#ifdef _LARGEFILE64_SOURCE
# ifndef _LARGEFILE_SOURCE
# define _LARGEFILE_SOURCE 1
diff --git a/third_party/zlib/zlib.patch b/third_party/zlib/zlib.patch
new file mode 100644
index 0000000..7181d44
--- /dev/null
+++ b/third_party/zlib/zlib.patch
@@ -0,0 +1,15 @@
+diff --git a/third_party/zlib/gzguts.h b/third_party/zlib/gzguts.h
+index 57faf37165..54f668fcb2 100644
+--- a/third_party/zlib/gzguts.h
++++ b/third_party/zlib/gzguts.h
+@@ -3,6 +3,10 @@
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
++#ifndef _WIN32
++ #include <unistd.h>
++#endif
++
+ #ifdef _LARGEFILE64_SOURCE
+ # ifndef _LARGEFILE_SOURCE
+ # define _LARGEFILE_SOURCE 1