Allow parallel building in libm

diff --git a/libm/Makefile b/libm/Makefile
index 6991017..ad26d07 100644 (file)
--- a/libm/Makefile
+++ b/libm/Makefile
@@ -102,8 +102,9 @@ endif
 $(AR_LIB_NAME): $(OBJS) $(ARCH_OBJS)
        $(INSTALL) -d $(TOPDIR)lib
        $(RM) $(AR_LIB_NAME)
-       $(AR) $(ARFLAGS) $(AR_LIB_NAME) $(OBJS) && \
-               $(AR) $(ARFLAGS) $(AR_LIB_NAME) $(ARCH_OBJS)
+       $(AR) $(ARFLAGS) $(AR_LIB_NAME).tmp $(OBJS)
+       $(AR) $(ARFLAGS) $(AR_LIB_NAME).tmp $(ARCH_OBJS)
+       mv $(AR_LIB_NAME).tmp $(AR_LIB_NAME)
 
 $(SO_LIB_NAME): $(AR_LIB_NAME)
        $(RM) $(TOPDIR)lib/$(SO_FULL_NAME) $(SO_LIB_NAME).$(MAJOR_VERSION) $(SO_LIB_NAME)