diff --git a/qmake.build/c/libstl/libstl.pro b/qmake.build/c/libstl/libstl.pro
index 98fc31a..031fea7 100644
--- a/qmake.build/c/libstl/libstl.pro
+++ b/qmake.build/c/libstl/libstl.pro
@@ -7,13 +7,12 @@ include(../../config.pri)
 message($$PREFIX_DIR)
 
 TEMPLATE = lib
-TARGET = fougstl-c$$TARGET_SUFFIX
+TARGET = fougdatax-c$$TARGET_SUFFIX
 DESTDIR = $$PREFIX_DIR/lib
 
-dll {
-  DEFINES *= FOUG_LIB_DLL  FOUG_LIB_MAKE_DLL
-  DEFINES *= FOUG_DATAX_LIBSTL_DLL  FOUG_DATAX_LIBSTL_MAKE_DLL
-}
+DATAX = stl
+
+dll:DEFINES *= FOUG_LIB_DLL  FOUG_LIB_MAKE_DLL
 
 #*g++*:QMAKE_CXXFLAGS_RELEASE -= -O2
 #*g++*:QMAKE_CXXFLAGS_RELEASE += -O3
@@ -22,26 +21,17 @@ INCLUDEPATH += ../../../src
 
 HEADERS += \
     ../../../src/c/endian.h \
+    ../../../src/c/error.h \
     ../../../src/c/global.h \
     ../../../src/c/memory.h \
     ../../../src/c/stream.h \
-    ../../../src/c/task_control.h \
-    ../../../src/c/libstl/stl_global.h \
-    ../../../src/c/libstl/stla_read.h \
-    ../../../src/c/libstl/stlb_read.h \
-    ../../../src/c/libstl/stlb_write.h \
-    ../../../src/c/libstl/stl_triangle.h \
-    ../../../src/c/libstl/stlb_triangle.h \
-    ../../../src/c/error.h
+    ../../../src/c/task_control.h
 
 SOURCES += \
     ../../../src/c/endian.c \
+    ../../../src/c/error.c \
     ../../../src/c/stream.c \
-    ../../../src/c/task_control.c \
-    ../../../src/c/libstl/stla_read.c \
-    ../../../src/c/libstl/stlb_read.c \
-    ../../../src/c/libstl/stlb_write.c \
-    ../../../src/c/error.c
+    ../../../src/c/task_control.c
 
 *-g++*:QMAKE_CFLAGS += -ansi -pedantic-errors
 *-msvc*:QMAKE_CFLAGS += -TC
@@ -50,9 +40,30 @@ global_inc.path  = $$PREFIX_DIR/include/datax
 global_inc.files = ../../../src/*.h
 c_global_inc.path  = $$PREFIX_DIR/include/datax/c
 c_global_inc.files = ../../../src/c/*.h
-c_libstl_inc.path  = $$PREFIX_DIR/include/datax/c/libstl
-c_libstl_inc.files = ../../../src/c/libstl/*.h
-INSTALLS += global_inc  c_global_inc  c_libstl_inc
+INSTALLS += global_inc  c_global_inc
+
+contains(DATAX, stl) {
+  dll:DEFINES *= FOUG_DATAX_LIBSTL_DLL  FOUG_DATAX_LIBSTL_MAKE_DLL
+
+  HEADERS += \
+    ../../../src/c/libstl/stl_global.h \
+    ../../../src/c/libstl/stla_read.h \
+    ../../../src/c/libstl/stla_write.h \
+    ../../../src/c/libstl/stlb_read.h \
+    ../../../src/c/libstl/stlb_write.h \
+    ../../../src/c/libstl/stl_triangle.h \
+    ../../../src/c/libstl/stlb_triangle.h
+
+  SOURCES += \
+    ../../../src/c/libstl/stla_read.c \
+    ../../../src/c/libstl/stla_write.c \
+    ../../../src/c/libstl/stlb_read.c \
+    ../../../src/c/libstl/stlb_write.c
+
+  c_libstl_inc.path  = $$PREFIX_DIR/include/datax/c/libstl
+  c_libstl_inc.files = ../../../src/c/libstl/*.h
+  INSTALLS += c_libstl_inc
+} # contains(DATAX, stl)
 
 #VER_MAJ = 0
 #VER_MIN = 1