URL:
<http://savannah.gnu.org/bugs/?45438>
Summary: -include file prerequisites not found, give no error
Project: make
Submitted by: ultrajoe
Submitted on: Mon 29 Jun 2015 06:15:42 PM GMT
Severity: 3 - Normal
Item Group: Bug
Status: None
Privacy: Public
Assigned to: None
Open/Closed: Open
Discussion Lock: Any
Component Version: 3.81
Operating System: POSIX-Based
Fixed Release: None
Triage Status: None
_______________________________________________________
Details:
Consider the following makefile:
# Remove ALL default rules
.SUFFIXES:
(%): %
%.out: %
%.c: %.w %.ch
%.tex: %.w %.ch
%:: %.v
%:: RCS/%,v
%:: RCS/%
%:: s.%
%:: SCCS/s.%
SOURCES = a.c b.c
OBJS = $(SOURCES:%.c=%.o)
DEPFILES = $(SOURCES:%.c=%.c.d)
EXE = a
.PHONY: all
all: $(EXE)
$(DEPFILES): %.c.d : %.c
@echo "Determining dependencies for $(<F)"
@$(CC) -E -MM -MF$@ -MP $<
$(OBJS): %.o: %.c
@echo "Compiling $(<F)"
@$(CC) -c $< -o $@
$(EXE): $(OBJS)
@echo "Linking $(@F)"
@$(CC) $+ -o $@
# This seems to be the troublemaking line!
-include $(DEPFILES)
If one or both source files do not exist, processing for the -include
directive notices this, but generates no error, I suppose because of the
-include. By the time it gets to the other targets, however, the
already-processed files are "Pruned." The end result is no generated error
message, but make exits with a status of 2. (Sorry, I'd love to give the
output of a make -d on this, but my Linux machine is on an isolated secured
network. For similar reasons I am unable to see if this has been fixed in
later versions, though perusing the bug list tells me it has not.)
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