source: trunk/base/objc.m4 @ 29367

Last change on this file since 29367 was 26177, checked in by jmpp@…, 13 years ago

Finally merging the dp2mp-move branch into trunk, woot!

This basically means all strings in our sources,
whether it's something we output to the user or something
internal, such as a function/proc naming, are entirely in
the macports namespace and we no longer mix darwinports
with apple with macports strings.

It also means we now have new paths in svn and on
the client side at installation time, added to a
cleaner structure under ${prefix}/var/. Read
http://trac.macports.org/projects/macports/wiki/MacPortsRenaming
for more information.

NOTE: This commit also marks the rsync server finally
being moved over to the macosforge boxes, with the new
layout outlined in the dp2mp-move branch in place.
DNS entries still point to the old rsync server for
macports, however, so sync'ing/selfupdating an installation
based on these sources will be temporarily broken
until dns refresh.

To developers and testers, please do test the upgrade
target in the main base/Makefile as thouroughly as
possible and report any bugs/shortcomings/unexpected_behavior
to me, thanks!

File size: 27.4 KB
Line 
1# objc.m4
2# Based on c.m4 from GNU Autoconf
3# The Objective C support, added by Landon Fuller <landonf@opendarwin.org>
4# on March 10th, 2004, is heavily based on Autoconf's existing C++ support.
5#
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402
403## ----------------------- ##
404## 1. Language selection.  ##
405## ----------------------- ##
406
407
408# ------------------------------ #
409# 1d. The Objective C language.  #
410# ------------------------------ #
411
412# AC_LANG(Objective C)
413# --------------------
414# OBJCFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
415m4_define([AC_LANG(Objective C)],
416[ac_ext=m
417ac_cpp='$OBJCPP $CPPFLAGS'
418ac_compile='$OBJC -c $OBJCFLAGS $CPPFLAGS conftest.$ac_ext >&AS_MESSAGE_LOG_FD'
419ac_link='$OBJC -o conftest$ac_exeext $OBJCFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&AS_MESSAGE_LOG_FD'
420ac_compiler_gnu=$ac_cv_objc_compiler_gnu
421])
422
423
424# AC_LANG_OBJC
425# -------------------------
426AU_DEFUN([AC_LANG_OBJC], [AC_LANG(Objective C)])
427
428
429# _AC_LANG_ABBREV(Objective C)
430# ----------------------------
431m4_define([_AC_LANG_ABBREV(Objective C)], [objc])
432
433
434# _AC_LANG_PREFIX(Objective C)
435# ----------------------------
436m4_define([_AC_LANG_PREFIX(Objective C)], [OBJC])
437
438
439
440## ---------------------- ##
441## 2.Producing programs.  ##
442## ---------------------- ##
443
444
445# ------------------------- #
446# 2d. Objective C sources.  #
447# ------------------------- #
448
449# AC_LANG_SOURCE(Objective C)(BODY)
450# ---------------------------------
451m4_copy([AC_LANG_SOURCE(C)], [AC_LANG_SOURCE(Objective C)])
452
453
454# AC_LANG_PROGRAM(Objective C)([PROLOGUE], [BODY])
455# ------------------------------------------------
456m4_copy([AC_LANG_PROGRAM(C)], [AC_LANG_PROGRAM(Objective C)])
457
458
459# AC_LANG_CALL(Objective C)(PROLOGUE, FUNCTION)
460# ---------------------------------------------
461m4_copy([AC_LANG_CALL(C)], [AC_LANG_CALL(Objective C)])
462
463
464# AC_LANG_FUNC_LINK_TRY(Objective C)(FUNCTION)
465# --------------------------------------------
466m4_copy([AC_LANG_FUNC_LINK_TRY(C)], [AC_LANG_FUNC_LINK_TRY(Objective C)])
467
468
469# AC_LANG_BOOL_COMPILE_TRY(Objective C)(PROLOGUE, EXPRESSION)
470# -----------------------------------------------------------
471m4_copy([AC_LANG_BOOL_COMPILE_TRY(C)], [AC_LANG_BOOL_COMPILE_TRY(Objective C)])
472
473
474# AC_LANG_INT_SAVE(Objective C)(PROLOGUE, EXPRESSION)
475# ---------------------------------------------------
476m4_copy([AC_LANG_INT_SAVE(C)], [AC_LANG_INT_SAVE(Objective C)])
477
478
479
480## -------------------------------------------- ##
481## 3. Looking for Compilers and Preprocessors.  ##
482## -------------------------------------------- ##
483
484
485# ------------------------------ #
486# 3d. The Objective C compiler.  #
487# ------------------------------ #
488
489
490# AC_LANG_PREPROC(Objecitve C)
491# ----------------------------
492# Find the Objective C preprocessor.  Must be AC_DEFUN'd to be AC_REQUIRE'able.
493AC_DEFUN([AC_LANG_PREPROC(Objective C)],
494[AC_REQUIRE([AC_PROG_OBJCPP])])
495
496
497# AC_PROG_OBJCPP
498# --------------
499# Find a working Objective C preprocessor.
500# We shouldn't have to require AC_PROG_CC, but this is due to the concurrency
501# between the AC_LANG_COMPILER_REQUIRE family and that of AC_PROG_OBJC.
502AC_DEFUN([AC_PROG_OBJCPP],
503[AC_REQUIRE([AC_PROG_OBJC])dnl
504AC_ARG_VAR([OBJCPP],   [Objective C preprocessor])dnl
505_AC_ARG_VAR_CPPFLAGS()dnl
506AC_LANG_PUSH(Objective C)dnl
507AC_MSG_CHECKING([how to run the Objective C preprocessor])
508if test -z "$OBJCPP"; then
509  AC_CACHE_VAL(ac_cv_prog_OBJCPP,
510  [dnl
511    # Double quotes because OBJCPP needs to be expanded
512    for OBJCPP in "$OBJC -E" "/lib/cpp"
513    do
514      _AC_PROG_PREPROC_WORKS_IFELSE([break])
515    done
516    ac_cv_prog_OBJCPP=$OBJCPP
517  ])dnl
518  OBJCPP=$ac_cv_prog_OBJCPP
519else
520  ac_cv_prog_OBJCPP=$OBJCPP
521fi
522AC_MSG_RESULT([$OBJCPP])
523_AC_PROG_PREPROC_WORKS_IFELSE([],
524          [AC_MSG_FAILURE([Objective C preprocessor "$OBJCPP" fails sanity check])])
525AC_SUBST(OBJCPP)dnl
526AC_LANG_POP(Objective C)dnl
527])# AC_PROG_OBJCPP
528
529
530# AC_LANG_COMPILER(Objective C)
531# -----------------------------
532# Find the Objective C compiler.  Must be AC_DEFUN'd to be AC_REQUIRE'able.
533AC_DEFUN([AC_LANG_COMPILER(Objective C)],
534[AC_REQUIRE([AC_PROG_OBJC])])
535
536
537# ac_cv_prog_objc
538# ---------------
539# We used to name the cache variable this way.
540AU_DEFUN([ac_cv_prog_objc],
541[ac_cv_objc_compiler_gnu])
542
543
544# AC_PROG_OBJC([LIST-OF-COMPILERS])
545# ---------------------------------
546# LIST-OF-COMPILERS is a space separated list of Objective C compilers
547# to search for (if not specified, a default list is used).  This just gives
548# the user an opportunity to specify an alternative search list for the
549# Objective C compiler.
550# cc    Native compiler
551# objc  David Stes' Portable Object Compiler
552AN_MAKEVAR([OBJC],  [AC_PROG_OBJC])
553AN_PROGRAM([gcc],   [AC_PROG_OBJC])
554AN_PROGRAM([cc],    [AC_PROG_OBJC])
555AC_DEFUN([AC_PROG_OBJC],
556[AC_LANG_PUSH(Objective C)dnl
557AC_ARG_VAR([OBJC],      [Objective C compiler command])dnl
558AC_ARG_VAR([OBJCFLAGS], [Objective C compiler flags])dnl
559_AC_ARG_VAR_LDFLAGS()dnl
560_AC_ARG_VAR_CPPFLAGS()dnl
561AC_CHECK_TOOLS(OBJC,
562               [$CCC m4_default([$1],
563                          [gcc cc objc])],
564               gcc)
565
566# Provide some information about the compiler.
567echo "$as_me:$LINENO:" \
568     "checking for _AC_LANG compiler version" >&AS_MESSAGE_LOG_FD
569ac_compiler=`set X $ac_compile; echo $[2]`
570_AC_EVAL([$ac_compiler --version </dev/null >&AS_MESSAGE_LOG_FD])
571_AC_EVAL([$ac_compiler -v </dev/null >&AS_MESSAGE_LOG_FD])
572_AC_EVAL([$ac_compiler -V </dev/null >&AS_MESSAGE_LOG_FD])
573
574m4_expand_once([_AC_COMPILER_EXEEXT])[]dnl
575m4_expand_once([_AC_COMPILER_OBJEXT])[]dnl
576_AC_LANG_COMPILER_GNU
577GOBJC=`test $ac_compiler_gnu = yes && echo yes`
578_AC_PROG_OBJC_G
579AC_LANG_POP(Objective C)dnl
580])# AC_PROG_OBJC
581
582
583# _AC_PROG_OBJC_G
584# ---------------
585# Check whether -g works, even if OBJCFLAGS is set, in case the package
586# plays around with OBJCFLAGS (such as to build both debugging and
587# normal versions of a library), tasteless as that idea is.
588m4_define([_AC_PROG_OBJC_G],
589[ac_test_OBJCFLAGS=${OBJCFLAGS+set}
590ac_save_OBJCFLAGS=$OBJCFLAGS
591OBJCFLAGS="-g"
592AC_CACHE_CHECK(whether $OBJC accepts -g, ac_cv_prog_objc_g,
593               [_AC_COMPILE_IFELSE([AC_LANG_PROGRAM()],
594                                   [ac_cv_prog_objc_g=yes],
595                                   [ac_cv_prog_objc_g=no])])
596if test "$ac_test_OBJCFLAGS" = set; then
597  OBJCFLAGS=$ac_save_OBJCFLAGS
598elif test $ac_cv_prog_objc_g = yes; then
599  if test "$GOBJC" = yes; then
600    OBJCFLAGS="-g -O2"
601  else
602    OBJCFLAGS="-g"
603  fi
604else
605  if test "$GOBJC" = yes; then
606    OBJCFLAGS="-O2"
607  else
608    OBJCFLAGS=
609  fi
610fi[]dnl
611])# _AC_PROG_OBJC_G
612
613
614## ------------------------------- ##
615## 4. Compilers' characteristics.  ##
616## ------------------------------- ##
617
618
619# -------------------------------- #
620# 4b. C compiler characteristics.  #
621# -------------------------------- #
622
623# libobjc and objc header tests shere?
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