add libmissing (implementing functions missing from uClibc)

git-svn-id: svn://svn.openwrt.org/openwrt/trunk/openwrt@2055 3c298f89-4303-0410-b956-a3cf2f4a3e73

toolchain/Makefile

@@ -1,6 +1,6 @@
 # Main makefile for the toolchain
 include $(TOPDIR)/rules.mk
-TARGETS:=sed utils binutils gcc uClibc ipkg-utils gdb
+TARGETS:=sed utils binutils gcc uClibc ipkg-utils gdb libmissing
 
 TARGETS_INSTALL:=$(patsubst %,%-install,$(TARGETS))
 TARGETS_CLEAN:=$(patsubst %,%-clean,$(TARGETS))

toolchain/libmissing/Makefile

@@ -0,0 +1,30 @@
+include $(TOPDIR)/rules.mk
+
+LIBMISSING_DIR:=$(TOOL_BUILD_DIR)/libmissing
+
+LIBMISSING_SRCS+=./files/math.c
+LIBMISSING_OBJS:=$(patsubst ./files/%.c,$(LIBMISSING_DIR)/%.o,$(LIBMISSING_SRCS))
+
+$(LIBMISSING_DIR)/.prepared:
+	mkdir -p $(LIBMISSING_DIR)
+	touch $@
+
+$(LIBMISSING_OBJS): $(LIBMISSING_DIR)/%.o : ./files/%.c
+	$(TARGET_CC) $(TARGET_CFLAGS) -c $< -o $@
+
+$(LIBMISSING_DIR)/libmissing.a: $(LIBMISSING_OBJS)
+	$(TARGET_CROSS)ar rc $(LIBMISSING_DIR)/libmissing.a $(LIBMISSING_OBJS)
+
+$(STAGING_DIR)/usr/lib/libmissing.a: $(LIBMISSING_DIR)/libmissing.a
+	mkdir -p $(STAGING_DIR)/usr/lib
+	cp -fpR $< $@
+	touch -c $@
+
+source:
+prepare: $(LIBMISSING_DIR)/.prepared
+compile: $(LIBMISSING_DIR)/libmissing.a
+install: $(STAGING_DIR)/usr/lib/libmissing.a
+clean: 
+	rm -rf \
+		$(STAGING_DIR)/usr/lib/libmissing.a \
+		$(LIBMISSING_DIR) \

toolchain/libmissing/files/math.c

@@ -0,0 +1,35 @@
+/* vi: set sw=4 ts=4: */
+
+/* cosf for uClibc
+ *
+ * wrapper for cos(x)
+ */
+
+#include "math.h"
+
+#ifdef __STDC__
+	float cosf(float x)		/* wrapper cos */
+#else
+	float cosf(x)			/* wrapper cos */
+	float x;
+#endif
+{
+	return (float) cos( (double)x );
+}
+
+/* sinf for uClibc
+ *
+ * wrapper for sin(x)
+ */
+
+#include "math.h"
+
+#ifdef __STDC__
+	float sinf(float x)		/* wrapper sin */
+#else
+	float sinf(x)			/* wrapper sin */
+	float x;
+#endif
+{
+	return (float) sin( (double)x );
+}