4 files changed, 4 insertions, 4 deletions
diff --git a/src/core/lib/support/log.c b/src/core/lib/support/log.c
index fadb4d9a2c..69f92e001c 100644
--- a/src/core/lib/support/log.c
+++ b/src/core/lib/support/log.c
@@ -27,7 +27,7 @@
 #include <stdio.h>
 #include <string.h>
 
-extern void gpr_default_log(gpr_log_func_args *args);
+extern "C" void gpr_default_log(gpr_log_func_args *args);
 static gpr_atm g_log_func = (gpr_atm)gpr_default_log;
 static gpr_atm g_min_severity_to_print = GPR_LOG_VERBOSITY_UNSET;
 
diff --git a/src/core/lib/support/log_linux.c b/src/core/lib/support/log_linux.c
index 7755018693..0914acedf4 100644
--- a/src/core/lib/support/log_linux.c
+++ b/src/core/lib/support/log_linux.c
@@ -56,7 +56,7 @@ void gpr_log(const char *file, int line, gpr_log_severity severity,
   free(message);
 }
 
-void gpr_default_log(gpr_log_func_args *args) {
+extern "C" void gpr_default_log(gpr_log_func_args *args) {
   const char *final_slash;
   char *prefix;
   const char *display_file;
diff --git a/src/core/lib/support/log_posix.c b/src/core/lib/support/log_posix.c
index 8b376fce41..855e8e7107 100644
--- a/src/core/lib/support/log_posix.c
+++ b/src/core/lib/support/log_posix.c
@@ -57,7 +57,7 @@ void gpr_log(const char *file, int line, gpr_log_severity severity,
   gpr_free(allocated);
 }
 
-void gpr_default_log(gpr_log_func_args *args) {
+extern "C" void gpr_default_log(gpr_log_func_args *args) {
   char *final_slash;
   const char *display_file;
   char time_buffer[64];
diff --git a/src/core/lib/support/log_windows.c b/src/core/lib/support/log_windows.c
index 0fdab79ae6..b71dacd80a 100644
--- a/src/core/lib/support/log_windows.c
+++ b/src/core/lib/support/log_windows.c
@@ -65,7 +65,7 @@ void gpr_log(const char *file, int line, gpr_log_severity severity,
 }
 
 /* Simple starter implementation */
-void gpr_default_log(gpr_log_func_args *args) {
+extern "C" void gpr_default_log(gpr_log_func_args *args) {
   char *final_slash;
   const char *display_file;
   char time_buffer[64];