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-rw-r--r--Makerules17
1 files changed, 17 insertions, 0 deletions
diff --git a/Makerules b/Makerules
index 6a8073006c..d8d571d993 100644
--- a/Makerules
+++ b/Makerules
@@ -262,6 +262,23 @@ sysdep_routines := $(sysdep_routines)
# This is the list of all object files, gotten by
# replacing every ".c" in `sources' with a ".o".
override objects := $(addprefix $(objpfx),$(sources:.c=.o))
+
+
+# This variable is used in ``include $(o-iterator)'' after defining
+# $(o-iterator-doit) to produce some desired rule using $o for the object
+# suffix, and setting $(object-suffixes-left) to $(object-suffixes); a copy
+# is produced for each object suffix in use.
+o-iterator = $(patsubst %,$(..)o-iterator.mk,$(object-suffixes))
+
+# The makefile may define $(extra-libs) with `libfoo libbar'
+# to build libfoo.a et al from the modules listed in $(libfoo-routines).
+ifdef extra-libs
+# extra-lib.mk is included once for each extra lib to define rules
+# to build it, and to add its objects to the various variables.
+# During its evaluation, $(lib) is set to the name of the library.
+extra-libs-left := $(extra-libs)
+include $(patsubst %,$(..)extra-lib.mk,$(extra-libs))
+endif
+depfiles := $(strip $(sources:.c=.d) \
$(patsubst %.o,%.d,$(filter %.o,$(extra-objs))) \