[linux] Build with GCC 5 (#4901)

* [linux] Build with GCC 5

* [build] -fabi-version=0 is the default for GCC 5

1 files changed, 1 insertions, 6 deletions

diff --git a/src/mbgl/util/compression.cpp b/src/mbgl/util/compression.cpp
index 5dc3f1127c..e189991b55 100644
--- a/src/mbgl/util/compression.cpp
+++ b/src/mbgl/util/compression.cpp
@@ -6,11 +6,8 @@
 #include <cstring>
 #include <stdexcept>
 
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wunused-variable"
-
 // Check zlib library version.
-const static bool zlibVersionCheck = []() {
+const static bool zlibVersionCheck __attribute__((unused)) = []() {
     const char *const version = zlibVersion();
     if (version[0] != ZLIB_VERSION[0]) {
         char message[96];
@@ -22,8 +19,6 @@ const static bool zlibVersionCheck = []() {
     return true;
 }();
 
-#pragma GCC diagnostic pop
-
 namespace mbgl {
 namespace util {