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From: "chris.january at allinea dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug build/13834] New: sim/ppc/Makefile uses GNU Make specific
 features
Date: Mon, 12 Mar 2012 15:36:00 -0000
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http://sourceware.org/bugzilla/show_bug.cgi?id=3D13834

             Bug #: 13834
           Summary: sim/ppc/Makefile uses GNU Make specific features
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: build
        AssignedTo: unassigned@sourceware.org
        ReportedBy: chris.january@allinea.com
    Classification: Unclassified


sim/ppc/Makefile uses GNU Make specific features but doesn't test for
GNU make in configure:

1. $< used in a non-default rule:

gentmap: ../common/gentmap.c
        $(CC_FOR_BUILD) $(BUILD_CFLAGS) -I. -I../common -I
$(srcdir)/../common -o gentmap $< $(BUILD_LIBS)

>>From the autoconf manual:

"Posix says that the =E2=80=98$<=E2=80=99 construct in makefiles can be use=
d only in
inference rules and in the =E2=80=98.DEFAULT=E2=80=99 rule; its meaning in =
ordinary
rules is unspecified. Solaris make for instance replaces it with the
empty string. OpenBSD (3.0 and later) make diagnoses these uses and
errors out. "

Result (on AIX, with AIX make):

        gcc -g -O2 -I. -I. -I./../../include -I../../bfd -I./../../bfd
-I../../gdb -I./../../gdb  -I./../../gdb/config  -I. -I../common
-I./../common -o gentmap=20=20
gcc: no input files
make: 1254-004 The error code from the last command is 1.

2. psim depends on -lz, which is not a real file:

LIBS =3D -lz

psim: $(TARGETLIB) main.o $(LIBIBERTY_LIB) $(BFD_LIB) $(LIBS)
$(LIBINTL_DEP)

Result (again, with AIX make):

make: 1254-002 Cannot find a rule to create target -lz from
dependencies.
Stop.

--=20
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