[Automake-commit] [SCM] GNU Automake branch, experimental/subdir-objects-work, created. v1.13.1-82-g887de3a

[Stefano Lattarini]

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The branch, experimental/subdir-objects-work has been created
        at  887de3a209a74ea4b3e3cd0933260663dfeec9cd (commit)

- Log -----------------------------------------------------------------
commit 887de3a209a74ea4b3e3cd0933260663dfeec9cd
Author: Stefano Lattarini <address@hidden>
Date:   Thu Jan 10 21:52:18 2013 +0100

    depend: reduce code duplication, de-uglify make verbose output
    
    Verbose output from compilation recipes had been made more messy by
    the previous "simplifying" commit XXX.  With this patch, not only we
    reduce some code duplication, but also improve that output again, for
    the joy of users who dislike silent-rules :-)
    
    * lib/am/depend2.am: Use the new '%XSOURCE%' transform, instead of
    copying and pasting the idiom for VPATH rewrite emulation over and
    over.  Fix some indentation and line-wrapping issues while at it.
    * automake.in (handle_languages): Implement the new transform.
    * t/silent-nested-vars.sh: Adjust to avoid spurious failures.
    
    Signed-off-by: Stefano Lattarini <address@hidden>

commit ba539faf0ba5a5ff1388635934c51ffe12073a77
Author: Stefano Lattarini <address@hidden>
Date:   Thu Jan 10 21:42:28 2013 +0100

    depend: prefer $(...) over `...` in Cygwin-specific recipes
    
    On Cygwin, we can happily assume only POSIX-conforming shells exist.
    This commit is useless by itself, but is useful as a preparatory
    refactoring in view of a future change.
    
    * lib/am/depend2.am: In recipes for producing '.obj' objects, use
    the POSIX form $(...) for command substitution, rather than the
    classic Bourne one `...`.
    
    Signed-off-by: Stefano Lattarini <address@hidden>

commit 915315ec82f56d831f98e35892b808cebaa7f52e
Author: Stefano Lattarini <address@hidden>
Date:   Thu Jan 10 21:31:57 2013 +0100

    depend2.am: reduce code duplication
    
    Just a simplification; no semantic change is intended.
    
    * lib/am/depend2.am (am__set_depbase): New.  Use it in all the three
    flavours of recipes (.o, .obj, .lo), instead of duplicating its code.
    
    Signed-off-by: Stefano Lattarini <address@hidden>

commit 603a2872f091b455c19cee72a4e2292a61a7dc95
Author: Stefano Lattarini <address@hidden>
Date:   Thu Jan 10 20:47:57 2013 +0100

    depend2.am: preparatory refactoring
    
    This is just a preparatory change in view of a future refactoring.
    No semantic change is intended.
    
    * lib/am/depend2.am: Adjust; for example, using '$@' in all recipes
    to indicate the output file (rather than recipe-specific transforms
    like '%OBJ%' and '%LTOBJ%'), and not assuming to know the exact
    file extension of the output file (e.g., whether it's '.o' or '.lo').
    
    Signed-off-by: Stefano Lattarini <address@hidden>

commit 87625bc5f37ada017fee0db99b49ca4f8365e428
Author: Stefano Lattarini <address@hidden>
Date:   Thu Jan 10 18:04:33 2013 +0100

    depend2.am: refactor and remove code duplication
    
    * lib/am/depend2.am: Here.  The obsolescent comments removed from this
    same file in commit 'v1.13.1-42-g8f06bfb' of 2012-01-09, "depend2.am: fix
    comments on verbosity of compilation rules", gave the rationale for why
    that code duplication was there in the first place (rationale that, like
    those comments, has been obsolete by the silent-rules introduction).
    * automake.in: Given the refactoring in 'depend2.am', there's no longer
    need to add extra trailing whitespace to the entries of the '%sourceflags'
    hash (which are used for the '%SOURCEFLAG%' transform when 'depend2.am'
    is processed.
    
    Signed-off-by: Stefano Lattarini <address@hidden>

commit 763e6e0578853374e769c40d380b2e3c60ec5326
Author: Stefano Lattarini <address@hidden>
Date:   Thu Jan 10 19:54:13 2013 +0100

    Automake::Language: drop unused fields 'compile_flag' and 'output_flag'
    
    They are unused after the recent flurry of changes.  This is just a
    simplification; no semantic change is intended.
    
    * automake.in: Here, in the Automake::Language 'Class::Struct' definition
    and in all the 'register_language()' invocations.
    
    Signed-off-by: Stefano Lattarini <address@hidden>

commit abc988b731052d8ac035fdf549b5959d2c45cd86
Author: Stefano Lattarini <address@hidden>
Date:   Thu Jan 10 19:48:14 2013 +0100

    depend: assume '-c' compiler flag always means to produce object files
    
    Rather than fully-fledged executables.  This is the case for all the
    compilers of all languages supported by Automake.
    
    This is just a simplification; no semantic changes are intended.
    
    * automake.in (handle_languages): Drop transform '%-c%'.
    * lib/am/depend2.am: Adjust to just assume the '%-c%' transform
    expands to "-c".
    
    Signed-off-by: Stefano Lattarini <address@hidden>

commit 9565ab9fccca59dde942c5be68b514ec74963c6a
Author: Stefano Lattarini <address@hidden>
Date:   Thu Jan 10 19:38:58 2013 +0100

    depend: assume we can always pass "-o" to the C compiler
    
    This is the case after the change in commit XXX of YYYY-MM-DD,
    ``compile: use 'compile' script when "-c -o" is used with losing compilers''
    
    This is just a simplification; no semantic changes are intended.
    
    * automake.in (handle_languages): Drop transform '%-o%', and definitions
    of '$output_flag'.
    * lib/am/depend2.am: Adjust to just assume the '?-o?' transform is true,
    and the '%-o%' transform expands to "-o".
    
    Signed-off-by: Stefano Lattarini <address@hidden>

commit 210e375ee92070b8cba8b92306f19a7a110c4735
Author: Stefano Lattarini <address@hidden>
Date:   Tue Jan 8 14:04:00 2013 +0100

    cleanup: having subdir-objects mandatory allow us some simplifications
    
    Few minor cleanups made possible by earlier changes, plus other minor
    cleanups triggered in cascade.  No semantic change is intended.
    
    This is a follow-up on previous commit 'XXX', and an adjusted backport
    of Automake-NG commit 'v1.12.1-315-gc97d41b' of 2012-06-08, "[ng] cleanup:
    after enabling of subdir-objects unconditionally".
    
    * automake.in (LANG_IGNORE, LANG_SUBDIR): Remove.
    (handle_languages): Drop the '%DEPBASE%' transform when processing
    the '$rule_file'.
    (register_language ('name' => 'vala', ...)): Add '.vapi' to the entry
    'extensions', and simplify the entry 'output_extensions' to point to
    a dummy subroutine (since it wasn't really used anyway).
    (handle_single_transform): No longer expect the 'lang_*_rewrite'
    subroutines to return a 'LANG_*' constant, but only a transformed
    extension, if required.  To decide whether further processing of the
    source file should be stopped, rely on a new set of 'lang_*_ignore'
    subroutines, defaulting to a subroutine that returns false.
    Accordingly, don't special case the handling of '.vapi' files anymore,
    instead rely on ...
    (lang_vala_ignore, lang_header_ignore): ... these new subroutines to
    avoid extra processing of C/C++ headers and Vala '.vapi' headers.
    (lang_java_rewrite): Remove.
    Remove an outdated comment.
    * lib/am/depend2.am: Partial rewrite to reduce code duplication and
    drop use of the '%DEPBASE%' transform.
    * t/compile_f_c_cxx.sh: Adjust.
    
    Signed-off-by: Stefano Lattarini <address@hidden>

commit 369c99fa29832230a4a005b78cac17b3bf41bbde
Author: Stefano Lattarini <address@hidden>
Date:   Wed Jun 6 10:27:46 2012 +0200

    subdir-objects: enable unconditionally
    
    See automake bug#13378.
    
    The fact that Automake-generated Makefiles places compiled object files
    in the current directory by default, also when the corresponding source
    file is in a subdirectory, is basically an historical accident, due to
    the fact that the 'subdir-objects' option had only been introduced in
    April 1999, starting with commit 'user-dep-gen-branchpoint-56-g88b5959',
    and never made the default, likely to avoid backwards-compatibility
    issues.
    
    Since we believe the behaviour enabled by the 'subdir-objects' is the
    only natural and most useful one, we make it the only only one available,
    simplifying the Automake implementation and APIs a little in the process.
    
    This change is basically an adjusted backport of Automake-NG commit
    'v1.12.1-313-g14fe163' of 2012-06-07, "[ng] subdir-objects: enable
    unconditionally".
    
    * NEWS: Update.
    * doc/automake.texi (Program and Library Variables): The output
    object files are no longer placed in the current directory by
    default, but rather in the same directory of the source file.
    (LIBOBJS): Now the $(LIBOBJS) and $(ALLOCA) variables can also
    be used outside of the directory where their sources lie.
    (List of Automake options): No longer document 'subdir-objects'
    option.
    Other related minor adjustments.
    * automake.in (LANG_PROCESS): Remove, it's no longer needed.
    (handle_languages): Don't test whether option 'subdir-objects'
    is set (just assume it is), and do not use the '%SUBDIROBJ%'
    transform when processing '.am' fragments.
    (lang_sub_obj): Delete, it would just return 'LANG_SUBDIR'
    unconditionally now.
    (lang_lex_rewrite): Adjust.  Don't test whether the option
    'subdir-objects' is set (just assume it is).
    (lang_yacc_rewrite): Likewise.
    (handle_single_transform): Likewise.  Remove an obsolete
    comment.  Add a proper "FIXME" comments about a fragment
    of code that might have become dead code now.
    (handle_LIBOBJS_or_ALLOCA): Simplify assuming that the option
    'subdir-objects' is always set.  Accordingly, there's no need
    to warn anymore if '$(LIBOBJS)' or '$(ALLOCA)' are used outside
    the '$config_libobj_dir' directory (as specified by autoconf
    macro 'AC_CONFIG_LIBOBJ_DIR').
    * lib/am/depend2.am: Assume the '?SUBDIROBJ?' Automake time
    conditional is always true, and remove its uses accordingly.
    * t/compile_f_c_cxx.sh: Adjust.
    * t/cscope.tap: Likewise.
    * t/depcomp8a.sh: Likewise.
    * t/depcomp8b.sh: Likewise.
    * t/libtool3.sh: Likewise.
    * t/ltlibsrc.sh: Likewise.
    * t/pr401.sh: Likewise.
    * t/pr401b.sh: Likewise.
    * t/pr401c.sh: Likewise.
    * t/subobj.sh: Likewise.
    * t/lex-line.sh: Likewise.
    * t/yacc-line.sh: Likewise.
    * t/yacc5.sh: Likewise.
    * t/vala-libs.sh: Likewise.
    * t/fort4.sh: Likewise, and extend a bit.
    * t/fort5.sh: Likewise.
    * t/gcj.sh: Likewise.
    * t/subpkg.sh: Likewise.
    * t/subpkg-yacc.sh: Likewise.
    * t/xsource.sh: Likewise.
    * t/libobj20a.sh: Remove as obsolete.
    * t/libobj20b.sh: Adjust heading comments.
    * t/libobj20c.sh: Likewise.
    * t/subobj4.sh: Remove as obsolete.
    * t/sourcefile-in-subdir.sh: Likewise.
    
    Signed-off-by: Stefano Lattarini <address@hidden>

commit 9d1c06a6f981fb0d599969cde62aebb7812a8eca
Author: Stefano Lattarini <address@hidden>
Date:   Fri Jan 11 16:59:07 2013 +0100

    compile: avoid AC_PROG_CC messy rewrite
    
    Instead, just touch up AC_PROG_CC to rewrite $CC when a losing compiler
    is detected, and to always distribute the 'compile' script.
    
    We can do so because Autoconf 2.70 (which we now require) has been so kind
    to implement the features we need (through a private hook made explicitly
    available to us), in commit v2.69-63-gce48964 of 2013-01-11, "AC_PROG_CC:
    also check whether $CC supports "-c -o" together":
    <http://lists.gnu.org/archive/html/autoconf-patches/2013-01/msg00007.html>
    
    * m4/init.m4 (AC_PROG_CC): Simplify, relying on the Autoconf hook.
    
    Signed-off-by: Stefano Lattarini <address@hidden>

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