diff --git a/mkspecs/dilos-g++/qmake.conf b/mkspecs/dilos-g++/qmake.conf
index 6d494d19..d01fc8f5 100644
--- a/mkspecs/dilos-g++/qmake.conf
+++ b/mkspecs/dilos-g++/qmake.conf
@@ -16,7 +16,7 @@ QMAKE_YACCFLAGS		= -d
 QMAKE_YACCFLAGS_MANGLE  = -p $base -b $base
 QMAKE_YACC_HEADER       = $base.tab.h
 QMAKE_YACC_SOURCE       = $base.tab.c
-QMAKE_CFLAGS		= -pipe -D__dilos__ -D__EXTENSIONS__ -fvisibility=hidden -fvisibility-inlines-hidden
+QMAKE_CFLAGS		= -pipe -D__dilos__ -D__EXTENSIONS__ -fvisibility=hidden
 QMAKE_CFLAGS_DEPS	= -M
 QMAKE_CFLAGS_WARN_ON	= -Wall -W
 QMAKE_CFLAGS_WARN_OFF	= -w
@@ -27,7 +27,7 @@ QMAKE_CFLAGS_YACC	= -Wno-unused -Wno-parentheses
 QMAKE_CFLAGS_THREAD	= -D_REENTRANT
 
 QMAKE_CXX		= g++
-QMAKE_CXXFLAGS		= $$QMAKE_CFLAGS
+QMAKE_CXXFLAGS		= $$QMAKE_CFLAGS -fvisibility-inlines-hidden
 QMAKE_CXXFLAGS_DEPS	= $$QMAKE_CFLAGS_DEPS
 QMAKE_CXXFLAGS_WARN_ON	= $$QMAKE_CFLAGS_WARN_ON
 QMAKE_CXXFLAGS_WARN_OFF	= $$QMAKE_CFLAGS_WARN_OFF
diff --git a/mkspecs/freebsd-g++/qmake.conf b/mkspecs/freebsd-g++/qmake.conf
index 289e31e4..448ec48d 100644
--- a/mkspecs/freebsd-g++/qmake.conf
+++ b/mkspecs/freebsd-g++/qmake.conf
@@ -12,7 +12,7 @@ QMAKE_LEX		= flex
 QMAKE_LEXFLAGS		= 
 QMAKE_YACC		= yacc
 QMAKE_YACCFLAGS		= -d
-QMAKE_CFLAGS		= -pipe -fvisibility=hidden -fvisibility-inlines-hidden
+QMAKE_CFLAGS		= -pipe -fvisibility=hidden
 QMAKE_CFLAGS_DEPS	= -M
 QMAKE_CFLAGS_WARN_ON	= -Wall -W
 QMAKE_CFLAGS_WARN_OFF	= -w
@@ -23,7 +23,7 @@ QMAKE_CFLAGS_YACC	= -Wno-unused -Wno-parentheses
 QMAKE_CFLAGS_THREAD	= -pthread -D_THREAD_SAFE
 
 QMAKE_CXX		= g++
-QMAKE_CXXFLAGS		= $$QMAKE_CFLAGS
+QMAKE_CXXFLAGS		= $$QMAKE_CFLAGS -fvisibility-inlines-hidden
 QMAKE_CXXFLAGS_DEPS	= $$QMAKE_CFLAGS_DEPS
 QMAKE_CXXFLAGS_WARN_ON	= $$QMAKE_CFLAGS_WARN_ON
 QMAKE_CXXFLAGS_WARN_OFF	= $$QMAKE_CFLAGS_WARN_OFF
diff --git a/mkspecs/linux-g++/qmake.conf b/mkspecs/linux-g++/qmake.conf
index c89fdbe5..18eabbe7 100644
--- a/mkspecs/linux-g++/qmake.conf
+++ b/mkspecs/linux-g++/qmake.conf
@@ -16,7 +16,7 @@ QMAKE_YACCFLAGS		= -d
 QMAKE_YACCFLAGS_MANGLE  = -p $base -b $base
 QMAKE_YACC_HEADER       = $base.tab.h
 QMAKE_YACC_SOURCE       = $base.tab.c
-QMAKE_CFLAGS		= -pipe -g -fvisibility=hidden -fvisibility-inlines-hidden
+QMAKE_CFLAGS		= -pipe -g -fvisibility=hidden
 QMAKE_CFLAGS_DEPS	= -M
 QMAKE_CFLAGS_WARN_ON	= -Wall -W
 QMAKE_CFLAGS_WARN_OFF	= -w
@@ -27,7 +27,7 @@ QMAKE_CFLAGS_YACC	= -Wno-unused -Wno-parentheses
 QMAKE_CFLAGS_THREAD	= -D_REENTRANT
 
 QMAKE_CXX		= g++
-QMAKE_CXXFLAGS		= $$QMAKE_CFLAGS
+QMAKE_CXXFLAGS		= $$QMAKE_CFLAGS -fvisibility-inlines-hidden
 QMAKE_CXXFLAGS_DEPS	= $$QMAKE_CFLAGS_DEPS
 QMAKE_CXXFLAGS_WARN_ON	= $$QMAKE_CFLAGS_WARN_ON
 QMAKE_CXXFLAGS_WARN_OFF	= $$QMAKE_CFLAGS_WARN_OFF
diff --git a/mkspecs/netbsd-g++/qmake.conf b/mkspecs/netbsd-g++/qmake.conf
index 43130b89..7f880ade 100644
--- a/mkspecs/netbsd-g++/qmake.conf
+++ b/mkspecs/netbsd-g++/qmake.conf
@@ -12,7 +12,7 @@ QMAKE_LEX		= flex
 QMAKE_LEXFLAGS		= 
 QMAKE_YACC		= yacc
 QMAKE_YACCFLAGS		= -d
-QMAKE_CFLAGS		= -pipe -fvisibility=hidden -fvisibility-inlines-hidden
+QMAKE_CFLAGS		= -pipe -fvisibility=hidden
 QMAKE_CFLAGS_DEPS	= -M
 QMAKE_CFLAGS_WARN_ON	= -Wall -W
 QMAKE_CFLAGS_WARN_OFF	= -w
@@ -23,7 +23,7 @@ QMAKE_CFLAGS_YACC	= -Wno-unused -Wno-parentheses
 QMAKE_CFLAGS_THREAD	= -pthread
 
 QMAKE_CXX		= g++
-QMAKE_CXXFLAGS		= $$QMAKE_CFLAGS
+QMAKE_CXXFLAGS		= $$QMAKE_CFLAGS -fvisibility-inlines-hidden
 QMAKE_CXXFLAGS_DEPS	= $$QMAKE_CFLAGS_DEPS
 QMAKE_CXXFLAGS_WARN_ON	= $$QMAKE_CFLAGS_WARN_ON
 QMAKE_CXXFLAGS_WARN_OFF	= $$QMAKE_CFLAGS_WARN_OFF
diff --git a/mkspecs/openbsd-g++/qmake.conf b/mkspecs/openbsd-g++/qmake.conf
index 2783f2f7..a97794f1 100644
--- a/mkspecs/openbsd-g++/qmake.conf
+++ b/mkspecs/openbsd-g++/qmake.conf
@@ -12,7 +12,7 @@ QMAKE_LEX		= flex
 QMAKE_LEXFLAGS		= 
 QMAKE_YACC		= yacc
 QMAKE_YACCFLAGS		= -d
-QMAKE_CFLAGS		= -pipe -fvisibility=hidden -fvisibility-inlines-hidden
+QMAKE_CFLAGS		= -pipe -fvisibility=hidden
 QMAKE_CFLAGS_DEPS	= -M
 QMAKE_CFLAGS_WARN_ON	= -Wall -W
 QMAKE_CFLAGS_WARN_OFF	= -w
@@ -23,7 +23,7 @@ QMAKE_CFLAGS_YACC	= -Wno-unused -Wno-parentheses
 QMAKE_CFLAGS_THREAD	= -pthread
 
 QMAKE_CXX		= g++
-QMAKE_CXXFLAGS		= $$QMAKE_CFLAGS
+QMAKE_CXXFLAGS		= $$QMAKE_CFLAGS -fvisibility-inlines-hidden
 QMAKE_CXXFLAGS_DEPS	= $$QMAKE_CFLAGS_DEPS
 QMAKE_CXXFLAGS_WARN_ON	= $$QMAKE_CFLAGS_WARN_ON
 QMAKE_CXXFLAGS_WARN_OFF	= $$QMAKE_CFLAGS_WARN_OFF