diff -up qt-everywhere-opensource-src-4.8.7/config.tests/unix/ibase/ibase.pro.ibase qt-everywhere-opensource-src-4.8.7/config.tests/unix/ibase/ibase.pro
--- qt-everywhere-opensource-src-4.8.7/config.tests/unix/ibase/ibase.pro.ibase	2015-05-07 09:14:42.000000000 -0500
+++ qt-everywhere-opensource-src-4.8.7/config.tests/unix/ibase/ibase.pro	2016-11-30 10:56:11.017740104 -0600
@@ -1,4 +1,4 @@
 SOURCES = ibase.cpp
 CONFIG -= qt dylib
 mac:CONFIG -= app_bundle
-LIBS += -lgds
+LIBS += -lfbclient
diff -up qt-everywhere-opensource-src-4.8.7/src/sql/drivers/ibase/qsql_ibase.pri.ibase qt-everywhere-opensource-src-4.8.7/src/sql/drivers/ibase/qsql_ibase.pri
--- qt-everywhere-opensource-src-4.8.7/src/sql/drivers/ibase/qsql_ibase.pri.ibase	2015-05-07 09:14:48.000000000 -0500
+++ qt-everywhere-opensource-src-4.8.7/src/sql/drivers/ibase/qsql_ibase.pri	2016-11-30 10:57:11.783113341 -0600
@@ -2,7 +2,7 @@ HEADERS += $$PWD/qsql_ibase.h
 SOURCES += $$PWD/qsql_ibase.cpp
 
 unix {
-    !contains(LIBS, .*gds.*):!contains(LIBS, .*libfb.*):LIBS += -lgds
+    !contains(LIBS, .*gds.*):!contains(LIBS, .*libfb.*):LIBS += -lfbclient
 } else {
     !contains(LIBS, .*gds.*):!contains(LIBS, .*fbclient.*) {
         win32-borland:LIBS += gds32.lib