--- Makefile.orig	2010-08-17 05:14:32.000000000 +0200
+++ Makefile	2015-08-16 18:52:41.614417755 +0200
@@ -1,9 +1,9 @@
 GIMP_VER = 2.4
 
-#USE_LCMS2 = yes
+USE_LCMS2 = yes
 
 PREFIX      = /usr
-INSTALLDIR  = $(PREFIX)/lib/gimp/2.0/plug-ins
+INSTALLDIR  = $(PREFIX)/GENTOOLIBDIR/gimp/2.0/plug-ins
 #INSTALLDIR = $(HOME)/.gimp-$(GIMP_VER)/plug-ins
 
 ifdef USE_LCMS2
@@ -21,6 +21,7 @@
 LCMS_LIB     = `pkg-config $(LCMS_PKG) --libs`
 TIFF_LIB     = -ltiff
 JPEG_LIB     = -ljpeg
+LIBM_LIB     = -lm
 
 GETTEXT_PACKAGE = gimp20-separate
 
@@ -37,7 +38,7 @@
 NLS     = -DENABLE_NLS -DGETTEXT_PACKAGE="\"$(GETTEXT_PACKAGE)\""
 CFLAGS += $(GIMP_INCLUDE) $(GTK_INCLUDE) $(LCMS_INCLUDE) $(CM) $(NLS) \
           -DUSE_ICC_BUTTON
-LIBS    = $(GIMP_LIB) $(GTK_LIB) $(LCMS_LIB) $(TIFF_LIB) $(JPEG_LIB)
+LIBS    = $(GIMP_LIB) $(GTK_LIB) $(LCMS_LIB) $(TIFF_LIB) $(JPEG_LIB) $(LIBM_LIB)
 
 SOURCES = $(SEPARATE_SOURCES) $(IMPORT_SOURCES) \
           $(ICC_COLORSPACE_SOURCES) $(EXTRA_SOURCES)
@@ -94,7 +95,7 @@
 
 install-plugins: $(TARGETS)
 	install -d "$(INSTALLDIR)"
-	install -c -s $^ "$(INSTALLDIR)"
+	install -c $^ "$(INSTALLDIR)"
 
 install: install-plugins install-catalogs