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diff -up dzen2-0.8.5/config.mk.check_environment dzen2-0.8.5/config.mk
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--- dzen2-0.8.5/config.mk.check_environment	2007-08-18 08:18:50.000000000 +0200
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+++ dzen2-0.8.5/config.mk	2007-12-26 13:40:06.000000000 +0100
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@@ -4,40 +4,41 @@ VERSION = 0.8.5
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 # Customize below to fit your system
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 # paths
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-PREFIX = /usr/local
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-MANPREFIX = ${PREFIX}/share/man
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+PREFIX ?= /usr/local
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+MANPREFIX ?= ${PREFIX}/share/man
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 X11INC = /usr/X11R6/include
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 X11LIB = /usr/X11R6/lib
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 INCS = -I. -I/usr/include -I${X11INC}
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 # Configure the features you want to be supported
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-# Only one of the following options has to be uncommented, 
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-# all others must be commented!
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-#
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-# Uncomment: Remove # from the beginning of respective lines
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-# Comment  : Add # to the beginning of the respective lines
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-# Option 1: No Xinerama no XPM
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-LIBS = -L/usr/lib -lc -L${X11LIB} -lX11
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-CFLAGS = -Os ${INCS} -DVERSION=\"${VERSION}\"
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+# Remove the # from the next line to enable Xinerama support
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+#DZEN_XINERAMA=1
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+
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+# Remove the # from the next line to enable Xpm support
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+#DZEN_XPM=1
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-# Option 2: No Xinerama with XPM
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-#LIBS = -L/usr/lib -lc -L${X11LIB} -lX11 -lXpm
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-#CFLAGS = -Os ${INCS} -DVERSION=\"${VERSION}\" -DDZEN_XPM
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-
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-# Option 3: With Xinerama no XPM
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-#LIBS = -L/usr/lib -lc -L${X11LIB} -lX11 -lXinerama
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-#CFLAGS = -Os ${INCS} -DVERSION=\"${VERSION}\" -DDZEN_XINERAMA
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-
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-# Option 4: With Xinerama and XPM
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-#LIBS = -L/usr/lib -lc -L${X11LIB} -lX11 -lXinerama -lXpm
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-#CFLAGS = -Os ${INCS} -DVERSION=\"${VERSION}\" -DDZEN_XINERAMA -DDZEN_XPM
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+# Uncomment: Remove # from the beginning of respective lines
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+# Comment  : Add # to the beginning of the respective lines
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 # END of feature configuration
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+CFLAGS ?= -Os
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+CFLAGS += ${INCS} -DVERSION=\"${VERSION}\"
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+LIBS = -L/usr/lib -lc -L${X11LIB} -lX11
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+
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+ifeq ($(DZEN_XINERAMA),1)
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+LIBS += -lXinerama
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+CFLAGS += -DDZEN_XINERAMA
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+endif
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+
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+ifeq ($(DZEN_XPM), 1)
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+LIBS += -lXpm
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+CFLAGS += -DDZEN_XPM
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+endif
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-LDFLAGS = ${LIBS}
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+LDFLAGS = ${CFLAGS} ${LIBS}
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 # Solaris, uncomment for Solaris
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 #CFLAGS = -fast ${INCS} -DVERSION=\"${VERSION}\"
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diff -up dzen2-0.8.5/gadgets/config.mk.check_environment dzen2-0.8.5/gadgets/config.mk
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--- dzen2-0.8.5/gadgets/config.mk.check_environment	2007-08-18 08:18:50.000000000 +0200
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+++ dzen2-0.8.5/gadgets/config.mk	2007-12-26 13:39:04.000000000 +0100
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@@ -1,8 +1,8 @@
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 # Customize below to fit your system
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 # paths
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-PREFIX = /usr/local
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-MANPREFIX = ${PREFIX}/share/man
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+PREFIX ?= /usr/local
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+MANPREFIX ?= ${PREFIX}/share/man
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 X11INC = /usr/X11R6/include
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 INCS = -I. -I/usr/include -I${X11INC}
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@@ -10,8 +10,9 @@ INCS = -I. -I/usr/include -I${X11INC}
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 X11LIB = /usr/X11R6/lib
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 LIBS = -L/usr/lib 
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-CFLAGS = -Os ${INCS} 
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-LDFLAGS = ${LIBS}
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+CFLAGS ?= -Os 
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+CFLAGS += ${INCS} 
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+LDFLAGS = ${CFLAGS} ${LIBS}
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 # compiler and linker
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 CC = gcc