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Annotation of OpenXM_contrib/gmp/mpn/Makeasm.am, Revision 1.1.1.1

1.1       ohara       1: ## Automake asm file rules.
                      2:
                      3: # Copyright 1996, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
                      4: #
                      5: # This file is part of the GNU MP Library.
                      6: #
                      7: # The GNU MP Library is free software; you can redistribute it and/or modify
                      8: # it under the terms of the GNU Lesser General Public License as published by
                      9: # the Free Software Foundation; either version 2.1 of the License, or (at your
                     10: # option) any later version.
                     11: #
                     12: # The GNU MP Library is distributed in the hope that it will be useful, but
                     13: # WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
                     14: # or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
                     15: # License for more details.
                     16: #
                     17: # You should have received a copy of the GNU Lesser General Public License
                     18: # along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
                     19: # the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
                     20: # MA 02111-1307, USA.
                     21:
                     22:
                     23: # COMPILE minus CC.
                     24: #
                     25: COMPILE_FLAGS = $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
                     26:        $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
                     27:
                     28: # Flags used for preprocessing (in ansi2knr rules).
                     29: #
                     30: PREPROCESS_FLAGS = $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
                     31:        $(CPPFLAGS)
                     32:
                     33:
                     34: # Recent versions of automake (1.5 and up for instance) append automake
                     35: # generated suffixes to this $(SUFFIXES) list.  This is essential for us,
                     36: # since .c must come after .s, .S and .asm.  If .c is before .s, for
                     37: # instance, then in the mpn directory "make" will see add_n.c mentioned in
                     38: # an explicit rule (the ansi2knr stuff) and decide it must have add_n.c,
                     39: # even if add_n.c doesn't exist but add_n.s does.  See GNU make
                     40: # documentation "(make)Implicit Rule Search", part 5c.
                     41: #
                     42: # On IRIX 6 native make this doesn't work properly though.  Somehow .c
                     43: # remains ahead of .s, perhaps because .c.s is a builtin rule.  .asm works
                     44: # fine though, and mpn/mips3 uses this.
                     45: #
                     46: SUFFIXES = .s .S .asm
                     47:
                     48:
                     49: # .s assembler, no preprocessing.
                     50: #
                     51: .s.o:
                     52:        $(CCAS) $(COMPILE_FLAGS) `test -f $< || echo '$(srcdir)/'`$<
                     53: .s.obj:
                     54:        $(CCAS) $(COMPILE_FLAGS) `cygpath -w $<`
                     55: .s.lo:
                     56:        $(LIBTOOL) --mode=compile $(CCAS) $(COMPILE_FLAGS) `test -f $< || echo '$(srcdir)/'`$<
                     57:
                     58:
                     59: # can be overridden during development, eg. "make RM_TMP=: mul_1.lo"
                     60: RM_TMP = rm -f
                     61:
                     62:
                     63: # .S assembler, preprocessed with cpp.
                     64: #
                     65: # It's necessary to run $(CPP) separately, since it seems not all compilers
                     66: # recognise .S files, in particular "cc" on HP-UX 10 and 11 doesn't (and
                     67: # will silently do nothing if given a .S).
                     68: #
                     69: # For .lo we need a helper script, as described below for .asm.lo.
                     70: #
                     71: .S.o:
                     72:        $(CPP) $(PREPROCESS_FLAGS) `test -f $< || echo '$(srcdir)/'`$< | grep -v '^#' >tmp-$*.s
                     73:        $(CCAS) $(COMPILE_FLAGS) tmp-$*.s -o $@
                     74:        $(RM_TMP) tmp-$*.s
                     75: .S.obj:
                     76:        $(CPP) $(PREPROCESS_FLAGS) `cygpath -w $<` | grep -v '^#' >tmp-$*.s
                     77:        $(CCAS) $(COMPILE_FLAGS) tmp-$*.s -o $@
                     78:        $(RM_TMP) tmp-$*.s
                     79: .S.lo:
                     80:        $(LIBTOOL) --mode=compile --tag=CC $(top_srcdir)/mpn/cpp-ccas --cpp="$(CPP) $(PREPROCESS_FLAGS)" $(CCAS) $(COMPILE_FLAGS) `test -f $< || echo '$(srcdir)/'`$<
                     81:
                     82:
                     83: # .asm assembler, preprocessed with m4.
                     84: #
                     85: # .o and .obj are non-PIC and just need m4 followed by a compile.
                     86: #
                     87: # .lo is a bit tricky.  Libtool (as of version 1.5) has foo.lo as a little
                     88: # text file, and .libs/foo.o and foo.o as the PIC and non-PIC objects,
                     89: # respectively.  It'd be asking for lots of trouble to try to create foo.lo
                     90: # ourselves, so instead arrange to invoke libtool like a --mode=compile, but
                     91: # with a special m4-ccas script which first m4 preprocesses, then compiles.
                     92: # --tag=CC is necessary since foo.asm is otherwise unknown to libtool.
                     93: #
                     94: # Libtool adds -DPIC when building a shared object and the .asm files look
                     95: # for that.  But it should be noted that the other PIC flags are on occasion
                     96: # important too, in particular FreeBSD 2.2.8 gas 1.92.3 requires -k before
                     97: # it accepts PIC constructs like @GOT, and gcc adds that flag only under
                     98: # -fPIC.  (Later versions of gas are happy to accept PIC stuff any time.)
                     99: #
                    100: .asm.o:
                    101:        $(M4) -DOPERATION_$* `test -f $< || echo '$(srcdir)/'`$< >tmp-$*.s
                    102:        $(CCAS) $(COMPILE_FLAGS) tmp-$*.s -o $@
                    103:        $(RM_TMP) tmp-$*.s
                    104: .asm.obj:
                    105:        $(M4) -DOPERATION_$* `cygpath -w $<` >tmp-$*.s
                    106:        $(CCAS) $(COMPILE_FLAGS) tmp-$*.s -o $@
                    107:        $(RM_TMP) tmp-$*.s
                    108: .asm.lo:
                    109:        $(LIBTOOL) --mode=compile --tag=CC $(top_srcdir)/mpn/m4-ccas --m4="$(M4)" $(CCAS) $(COMPILE_FLAGS) `test -f $< || echo '$(srcdir)/'`$<

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