URL:
<http://savannah.gnu.org/bugs/?20394>
Summary: vpath directive drops entries
Project: make
Submitted by: None
Submitted on: Samstag 07.07.2007 um 08:09 UTC
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
_______________________________________________________
Details:
With GNU make v3.81 (as well as earlier versions, eg. 3.81beta4 and v3.80),
the vpath directive for libraries seems to "forget" entries under certain
circumstances.
Example:
A project with the following directory layout:
Makefile
foo1/
foo1/Makefile
foo2/
foo2/Makefile
foo3/
foo3/Makefile
foo4/
foo4/Makefile
foo5/
foo5/Makefile
foo6/
foo6/Makefile
foo7/
foo7/Makefile
foo8/
foo8/Makefile
include/
lib/
and this top-level Makefile:
#####################
SUBDIRS := foo1 foo2 foo3 foo4 foo5 foo6 foo7 foo8
TARGET := app
LIBDIRS := $(patsubst %,-L%,$(SUBDIRS))
LIBS := $(patsubst %,-l%,$(SUBDIRS))
vpath %.h include
vpath %.a lib $(SUBDIRS)
all: subdirs $(TARGET)
subdirs:
@(for module in $(SUBDIRS); \
do \
$(MAKE) -w -C $$module -f Makefile $(MAKECMDGOALS); \
done)
$(TARGET): $(LIBS)
$(CC) -o $@ $(LIBDIRS) $(LIBS)
#####################
and this as each of the subdir-Makefiles:
LIBNAME := $(shell basename `pwd`)
LIBFILENAME := lib$(LIBNAME).a
LIBTARGET := $(LIBFILENAME)
all: $(LIBTARGET)
$(LIBTARGET):
touch $@
----
Output:
$ make
make[1]: Entering directory `/home/luna/tmp/testmake3/foo1'
touch libfoo1.a
make[1]: Leaving directory `/home/luna/tmp/testmake3/foo1'
make[1]: Entering directory `/home/luna/tmp/testmake3/foo2'
touch libfoo2.a
make[1]: Leaving directory `/home/luna/tmp/testmake3/foo2'
make[1]: Entering directory `/home/luna/tmp/testmake3/foo3'
touch libfoo3.a
make[1]: Leaving directory `/home/luna/tmp/testmake3/foo3'
make[1]: Entering directory `/home/luna/tmp/testmake3/foo4'
touch libfoo4.a
make[1]: Leaving directory `/home/luna/tmp/testmake3/foo4'
make[1]: Entering directory `/home/luna/tmp/testmake3/foo5'
touch libfoo5.a
make[1]: Leaving directory `/home/luna/tmp/testmake3/foo5'
make[1]: Entering directory `/home/luna/tmp/testmake3/foo6'
touch libfoo6.a
make[1]: Leaving directory `/home/luna/tmp/testmake3/foo6'
make[1]: Entering directory `/home/luna/tmp/testmake3/foo7'
touch libfoo7.a
make[1]: Leaving directory `/home/luna/tmp/testmake3/foo7'
make[1]: Entering directory `/home/luna/tmp/testmake3/foo8'
touch libfoo8.a
make[1]: Leaving directory `/home/luna/tmp/testmake3/foo8'
make: *** No rule to make target `-lfoo8', needed by `app'. Stop.
Interestingly, it works again if any one of these actions is taken:
* the lib/ directory is removed
* the include/ directory is removed
* one of the entries of SUBDIRS is removed
* the line with *vpath %.h include* is removed
* the line with *vpath %.h include* is put _after_ the *vpath %.a ...*
* in the line with *vpath %.a ...*, the entry *lib* is moved to the end of
the list
_______________________________________________________
File Attachments:
-------------------------------------------------------
Date: Samstag 07.07.2007 um 08:09 UTC Name: make_vpath_error.tar.gz Size:
845B By: None
Example directory structure, as described above
<http://savannah.gnu.org/bugs/download.php?file_id=13261>
_______________________________________________________
Reply to this item at:
<http://savannah.gnu.org/bugs/?20394>
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