diff --git a/Makefile b/Makefile
index fb5d352a..26532ef3 100644
--- a/Makefile
+++ b/Makefile
@@ -14,30 +14,6 @@ GENSTATIC ?= ./tools/chibi-genstatic
 CHIBI ?= LD_LIBRARY_PATH=".:$(LD_LIBRARY_PATH)" ./chibi-scheme$(EXE)
 CHIBI_DEPENDENCIES = ./chibi-scheme$(EXE)
 
-########################################################################
-# Library config.
-#
-# This is to allow "make SEXP_USE_BOEHM=1" and "make SEXP_USE_DL=0" to
-# automatically include the necessary compiler and linker flags in
-# addition to setting those features.  If not using GNU make just
-# comment out the ifs and use the else branches for the defaults.
-
-ifeq ($(SEXP_USE_BOEHM),1)
-GCLDFLAGS := -lgc
-XCPPFLAGS := $(CPPFLAGS) -Iinclude $(D:%=-DSEXP_USE_%) -DSEXP_USE_BOEHM=1
-else
-GCLDFLAGS :=
-XCPPFLAGS := $(CPPFLAGS) -Iinclude $(D:%=-DSEXP_USE_%)
-endif
-
-ifeq ($(SEXP_USE_DL),0)
-XLDFLAGS  := $(LDFLAGS) $(RLDFLAGS) $(GCLDFLAGS) -lm
-XCFLAGS   := -Wall -DSEXP_USE_DL=0 -g -g3 -Os $(CFLAGS)
-else
-XLDFLAGS  := $(LDFLAGS) $(RLDFLAGS) $(GCLDFLAGS) $(LIBDL) -lm
-XCFLAGS   := -Wall -g -g3 -Os $(CFLAGS)
-endif
-
 ########################################################################
 
 CHIBI_COMPILED_LIBS = lib/chibi/filesystem$(SO) lib/chibi/process$(SO) \
diff --git a/Makefile.libs b/Makefile.libs
index 6767d386..4c186282 100644
--- a/Makefile.libs
+++ b/Makefile.libs
@@ -42,6 +42,30 @@ CHIBI_DOC ?= chibi-doc
 
 include Makefile.detect
 
+########################################################################
+# Library config.
+#
+# This is to allow "make SEXP_USE_BOEHM=1" and "make SEXP_USE_DL=0" to
+# automatically include the necessary compiler and linker flags in
+# addition to setting those features.  If not using GNU make just
+# comment out the ifs and use the else branches for the defaults.
+
+ifeq ($(SEXP_USE_BOEHM),1)
+GCLDFLAGS := -lgc
+XCPPFLAGS := $(CPPFLAGS) -Iinclude $(D:%=-DSEXP_USE_%) -DSEXP_USE_BOEHM=1
+else
+GCLDFLAGS :=
+XCPPFLAGS := $(CPPFLAGS) -Iinclude $(D:%=-DSEXP_USE_%)
+endif
+
+ifeq ($(SEXP_USE_DL),0)
+XLDFLAGS  := $(LDFLAGS) $(RLDFLAGS) $(GCLDFLAGS) -lm
+XCFLAGS   := -Wall -DSEXP_USE_DL=0 -g -g3 -Os $(CFLAGS)
+else
+XLDFLAGS  := $(LDFLAGS) $(RLDFLAGS) $(GCLDFLAGS) $(LIBDL) -lm
+XCFLAGS   := -Wall -g -g3 -Os $(CFLAGS)
+endif
+
 ########################################################################
 
 all-libs: $(COMPILED_LIBS)