diff --git a/configure.ac b/configure.ac
index 5421df1d0a0..6c249064ec2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -658,6 +658,11 @@ AM_PROG_AS
 
 AX_COMPILER_VENDOR
 
+AC_MSG_CHECKING([for C compiler version])
+# Capture the output of the compiler version command
+ac_cv_c_compiler_version=`${CC} --version 2>&1 | grep "Apple clang version" | head -n 1 | awk '{print $4}' | cut -d'.' -f1`
+AC_MSG_RESULT([$ac_cv_c_compiler_version])
+
 AX_CC_FOR_BUILD
 
 CFLAGS="${_ts_saved_CFLAGS}"
@@ -848,6 +853,9 @@ AS_IF([test "x${has_optimizer_flags}" = "xno"],
         ]
 )
 
+AS_IF([test "x$ac_cv_c_compiler_version" = "x17"], [NO_WARN_CAST_FUNCTION_TYPE_MISMATCH="-Wno-cast-function-type-mismatch"], [NO_WARN_CAST_FUNCTION_TYPE_MISMATCH=""])
+AC_SUBST([NO_WARN_CAST_FUNCTION_TYPE_MISMATCH])
+
 case $host_os_def in
   linux)
     AS_IF([test "x$ax_cv_c_compiler_vendor" = "xintel"], [
@@ -885,7 +893,7 @@ case $host_os_def in
 
   darwin)
     AS_IF([test "x$ax_cv_c_compiler_vendor" = "xclang"], [
-      common_opt="-pipe -Wall -Wno-deprecated-declarations -Qunused-arguments -Wextra -Wno-ignored-qualifiers -Wno-unused-parameter"
+      common_opt="-pipe -Wall -Wno-deprecated-declarations -Qunused-arguments -Wextra -Wno-ignored-qualifiers -Wno-unused-parameter -Wno-vla-extension $NO_WARN_CAST_FUNCTION_TYPE_MISMATCH"
       debug_opt="-g $common_opt"
       release_opt="-g $common_opt $optimizing_flags -fno-strict-aliasing"
       cxx_opt="-Wno-invalid-offsetof"
diff --git a/include/tscore/ink_endian.h b/include/tscore/ink_endian.h
index 539c8354124..337a0ba44a7 100644
--- a/include/tscore/ink_endian.h
+++ b/include/tscore/ink_endian.h
@@ -26,8 +26,10 @@
 #include "tscore/ink_config.h"
 
 #ifdef HAVE_SYS_ENDIAN_H
+#if !defined(darwin)
 #include <sys/endian.h>
 #endif
+#endif
 #ifdef HAVE_MACHINE_ENDIAN_H
 #include <machine/endian.h>
 #endif
diff --git a/iocore/net/QUICNetVConnection.cc b/iocore/net/QUICNetVConnection.cc
index 5c52a188d3d..17b7d9ad0cf 100644
--- a/iocore/net/QUICNetVConnection.cc
+++ b/iocore/net/QUICNetVConnection.cc
@@ -1654,7 +1654,6 @@ QUICNetVConnection::_packetize_frames(uint8_t *packet_buf, QUICEncryptionLevel l
   max_frame_size = std::min(max_frame_size, this->_maximum_stream_frame_data_size());
 
   bool probing                   = false;
-  int frame_count                = 0;
   size_t len                     = 0;
   Ptr<IOBufferBlock> first_block = make_ptr<IOBufferBlock>(new_IOBufferBlock());
   Ptr<IOBufferBlock> last_block  = first_block;
@@ -1691,7 +1690,6 @@ QUICNetVConnection::_packetize_frames(uint8_t *packet_buf, QUICEncryptionLevel l
           break;
         }
 
-        ++frame_count;
         probing |= frame->is_probing_frame();
         if (frame->is_flow_controlled()) {
           int ret = this->_remote_flow_controller->update(this->_stream_manager->total_offset_sent());