lac : 1ce9a5ab36d22cad4d0d60cd8e39326f419f441e

     1: # lib-link.m4 serial 26 (gettext-0.18.2)
     2: dnl Copyright (C) 2001-2017 Free Software Foundation, Inc.
     3: dnl This file is free software; the Free Software Foundation
     4: dnl gives unlimited permission to copy and/or distribute it,
     5: dnl with or without modifications, as long as this notice is preserved.
     6: 
     7: dnl From Bruno Haible.
     8: 
     9: AC_PREREQ([2.54])
    10: 
    11: dnl AC_LIB_LINKFLAGS(name [, dependencies]) searches for libname and
    12: dnl the libraries corresponding to explicit and implicit dependencies.
    13: dnl Sets and AC_SUBSTs the LIB${NAME} and LTLIB${NAME} variables and
    14: dnl augments the CPPFLAGS variable.
    15: dnl Sets and AC_SUBSTs the LIB${NAME}_PREFIX variable to nonempty if libname
    16: dnl was found in ${LIB${NAME}_PREFIX}/$acl_libdirstem.
    17: AC_DEFUN([AC_LIB_LINKFLAGS],
    18: [
    19:   AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
    20:   AC_REQUIRE([AC_LIB_RPATH])
    21:   pushdef([Name],[m4_translit([$1],[./+-], [____])])
    22:   pushdef([NAME],[m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./+-],
    23:                                    [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
    24:   AC_CACHE_CHECK([how to link with lib[]$1], [ac_cv_lib[]Name[]_libs], [
    25:     AC_LIB_LINKFLAGS_BODY([$1], [$2])
    26:     ac_cv_lib[]Name[]_libs="$LIB[]NAME"
    27:     ac_cv_lib[]Name[]_ltlibs="$LTLIB[]NAME"
    28:     ac_cv_lib[]Name[]_cppflags="$INC[]NAME"
    29:     ac_cv_lib[]Name[]_prefix="$LIB[]NAME[]_PREFIX"
    30:   ])
    31:   LIB[]NAME="$ac_cv_lib[]Name[]_libs"
    32:   LTLIB[]NAME="$ac_cv_lib[]Name[]_ltlibs"
    33:   INC[]NAME="$ac_cv_lib[]Name[]_cppflags"
    34:   LIB[]NAME[]_PREFIX="$ac_cv_lib[]Name[]_prefix"
    35:   AC_LIB_APPENDTOVAR([CPPFLAGS], [$INC]NAME)
    36:   AC_SUBST([LIB]NAME)
    37:   AC_SUBST([LTLIB]NAME)
    38:   AC_SUBST([LIB]NAME[_PREFIX])
    39:   dnl Also set HAVE_LIB[]NAME so that AC_LIB_HAVE_LINKFLAGS can reuse the
    40:   dnl results of this search when this library appears as a dependency.
    41:   HAVE_LIB[]NAME=yes
    42:   popdef([NAME])
    43:   popdef([Name])
    44: ])
    45: 
    46: dnl AC_LIB_HAVE_LINKFLAGS(name, dependencies, includes, testcode, [missing-message])
    47: dnl searches for libname and the libraries corresponding to explicit and
    48: dnl implicit dependencies, together with the specified include files and
    49: dnl the ability to compile and link the specified testcode. The missing-message
    50: dnl defaults to 'no' and may contain additional hints for the user.
    51: dnl If found, it sets and AC_SUBSTs HAVE_LIB${NAME}=yes and the LIB${NAME}
    52: dnl and LTLIB${NAME} variables and augments the CPPFLAGS variable, and
    53: dnl #defines HAVE_LIB${NAME} to 1. Otherwise, it sets and AC_SUBSTs
    54: dnl HAVE_LIB${NAME}=no and LIB${NAME} and LTLIB${NAME} to empty.
    55: dnl Sets and AC_SUBSTs the LIB${NAME}_PREFIX variable to nonempty if libname
    56: dnl was found in ${LIB${NAME}_PREFIX}/$acl_libdirstem.
    57: AC_DEFUN([AC_LIB_HAVE_LINKFLAGS],
    58: [
    59:   AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
    60:   AC_REQUIRE([AC_LIB_RPATH])
    61:   pushdef([Name],[m4_translit([$1],[./+-], [____])])
    62:   pushdef([NAME],[m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./+-],
    63:                                    [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
    64: 
    65:   dnl Search for lib[]Name and define LIB[]NAME, LTLIB[]NAME and INC[]NAME
    66:   dnl accordingly.
    67:   AC_LIB_LINKFLAGS_BODY([$1], [$2])
    68: 
    69:   dnl Add $INC[]NAME to CPPFLAGS before performing the following checks,
    70:   dnl because if the user has installed lib[]Name and not disabled its use
    71:   dnl via --without-lib[]Name-prefix, he wants to use it.
    72:   ac_save_CPPFLAGS="$CPPFLAGS"
    73:   AC_LIB_APPENDTOVAR([CPPFLAGS], [$INC]NAME)
    74: 
    75:   AC_CACHE_CHECK([for lib[]$1], [ac_cv_lib[]Name], [
    76:     ac_save_LIBS="$LIBS"
    77:     dnl If $LIB[]NAME contains some -l options, add it to the end of LIBS,
    78:     dnl because these -l options might require -L options that are present in
    79:     dnl LIBS. -l options benefit only from the -L options listed before it.
    80:     dnl Otherwise, add it to the front of LIBS, because it may be a static
    81:     dnl library that depends on another static library that is present in LIBS.
    82:     dnl Static libraries benefit only from the static libraries listed after
    83:     dnl it.
    84:     case " $LIB[]NAME" in
    85:       *" -l"*) LIBS="$LIBS $LIB[]NAME" ;;
    86:       *)       LIBS="$LIB[]NAME $LIBS" ;;
    87:     esac
    88:     AC_LINK_IFELSE(
    89:       [AC_LANG_PROGRAM([[$3]], [[$4]])],
    90:       [ac_cv_lib[]Name=yes],
    91:       [ac_cv_lib[]Name='m4_if([$5], [], [no], [[$5]])'])
    92:     LIBS="$ac_save_LIBS"
    93:   ])
    94:   if test "$ac_cv_lib[]Name" = yes; then
    95:     HAVE_LIB[]NAME=yes
    96:     AC_DEFINE([HAVE_LIB]NAME, 1, [Define if you have the lib][$1 library.])
    97:     AC_MSG_CHECKING([how to link with lib[]$1])
    98:     AC_MSG_RESULT([$LIB[]NAME])
    99:   else
   100:     HAVE_LIB[]NAME=no
   101:     dnl If $LIB[]NAME didn't lead to a usable library, we don't need
   102:     dnl $INC[]NAME either.
   103:     CPPFLAGS="$ac_save_CPPFLAGS"
   104:     LIB[]NAME=
   105:     LTLIB[]NAME=
   106:     LIB[]NAME[]_PREFIX=
   107:   fi
   108:   AC_SUBST([HAVE_LIB]NAME)
   109:   AC_SUBST([LIB]NAME)
   110:   AC_SUBST([LTLIB]NAME)
   111:   AC_SUBST([LIB]NAME[_PREFIX])
   112:   popdef([NAME])
   113:   popdef([Name])
   114: ])
   115: 
   116: dnl Determine the platform dependent parameters needed to use rpath:
   117: dnl   acl_libext,
   118: dnl   acl_shlibext,
   119: dnl   acl_libname_spec,
   120: dnl   acl_library_names_spec,
   121: dnl   acl_hardcode_libdir_flag_spec,
   122: dnl   acl_hardcode_libdir_separator,
   123: dnl   acl_hardcode_direct,
   124: dnl   acl_hardcode_minus_L.
   125: AC_DEFUN([AC_LIB_RPATH],
   126: [
   127:   dnl Tell automake >= 1.10 to complain if config.rpath is missing.
   128:   m4_ifdef([AC_REQUIRE_AUX_FILE], [AC_REQUIRE_AUX_FILE([config.rpath])])
   129:   AC_REQUIRE([AC_PROG_CC])                dnl we use $CC, $GCC, $LDFLAGS
   130:   AC_REQUIRE([AC_LIB_PROG_LD])            dnl we use $LD, $with_gnu_ld
   131:   AC_REQUIRE([AC_CANONICAL_HOST])         dnl we use $host
   132:   AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT]) dnl we use $ac_aux_dir
   133:   AC_CACHE_CHECK([for shared library run path origin], [acl_cv_rpath], [
   134:     CC="$CC" GCC="$GCC" LDFLAGS="$LDFLAGS" LD="$LD" with_gnu_ld="$with_gnu_ld" \
   135:     ${CONFIG_SHELL-/bin/sh} "$ac_aux_dir/config.rpath" "$host" > conftest.sh
   136:     . ./conftest.sh
   137:     rm -f ./conftest.sh
   138:     acl_cv_rpath=done
   139:   ])
   140:   wl="$acl_cv_wl"
   141:   acl_libext="$acl_cv_libext"
   142:   acl_shlibext="$acl_cv_shlibext"
   143:   acl_libname_spec="$acl_cv_libname_spec"
   144:   acl_library_names_spec="$acl_cv_library_names_spec"
   145:   acl_hardcode_libdir_flag_spec="$acl_cv_hardcode_libdir_flag_spec"
   146:   acl_hardcode_libdir_separator="$acl_cv_hardcode_libdir_separator"
   147:   acl_hardcode_direct="$acl_cv_hardcode_direct"
   148:   acl_hardcode_minus_L="$acl_cv_hardcode_minus_L"
   149:   dnl Determine whether the user wants rpath handling at all.
   150:   AC_ARG_ENABLE([rpath],
   151:     [  --disable-rpath         do not hardcode runtime library paths],
   152:     :, enable_rpath=yes)
   153: ])
   154: 
   155: dnl AC_LIB_FROMPACKAGE(name, package)
   156: dnl declares that libname comes from the given package. The configure file
   157: dnl will then not have a --with-libname-prefix option but a
   158: dnl --with-package-prefix option. Several libraries can come from the same
   159: dnl package. This declaration must occur before an AC_LIB_LINKFLAGS or similar
   160: dnl macro call that searches for libname.
   161: AC_DEFUN([AC_LIB_FROMPACKAGE],
   162: [
   163:   pushdef([NAME],[m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./+-],
   164:                                    [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
   165:   define([acl_frompackage_]NAME, [$2])
   166:   popdef([NAME])
   167:   pushdef([PACK],[$2])
   168:   pushdef([PACKUP],[m4_translit(PACK,[abcdefghijklmnopqrstuvwxyz./+-],
   169:                                      [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
   170:   define([acl_libsinpackage_]PACKUP,
   171:     m4_ifdef([acl_libsinpackage_]PACKUP, [m4_defn([acl_libsinpackage_]PACKUP)[, ]],)[lib$1])
   172:   popdef([PACKUP])
   173:   popdef([PACK])
   174: ])
   175: 
   176: dnl AC_LIB_LINKFLAGS_BODY(name [, dependencies]) searches for libname and
   177: dnl the libraries corresponding to explicit and implicit dependencies.
   178: dnl Sets the LIB${NAME}, LTLIB${NAME} and INC${NAME} variables.
   179: dnl Also, sets the LIB${NAME}_PREFIX variable to nonempty if libname was found
   180: dnl in ${LIB${NAME}_PREFIX}/$acl_libdirstem.
   181: AC_DEFUN([AC_LIB_LINKFLAGS_BODY],
   182: [
   183:   AC_REQUIRE([AC_LIB_PREPARE_MULTILIB])
   184:   pushdef([NAME],[m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./+-],
   185:                                    [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
   186:   pushdef([PACK],[m4_ifdef([acl_frompackage_]NAME, [acl_frompackage_]NAME, lib[$1])])
   187:   pushdef([PACKUP],[m4_translit(PACK,[abcdefghijklmnopqrstuvwxyz./+-],
   188:                                      [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
   189:   pushdef([PACKLIBS],[m4_ifdef([acl_frompackage_]NAME, [acl_libsinpackage_]PACKUP, lib[$1])])
   190:   dnl Autoconf >= 2.61 supports dots in --with options.
   191:   pushdef([P_A_C_K],[m4_if(m4_version_compare(m4_defn([m4_PACKAGE_VERSION]),[2.61]),[-1],[m4_translit(PACK,[.],[_])],PACK)])
   192:   dnl By default, look in $includedir and $libdir.
   193:   use_additional=yes
   194:   AC_LIB_WITH_FINAL_PREFIX([
   195:     eval additional_includedir=\"$includedir\"
   196:     eval additional_libdir=\"$libdir\"
   197:   ])
   198:   AC_ARG_WITH(P_A_C_K[-prefix],
   199: [[  --with-]]P_A_C_K[[-prefix[=DIR]  search for ]PACKLIBS[ in DIR/include and DIR/lib
   200:   --without-]]P_A_C_K[[-prefix     don't search for ]PACKLIBS[ in includedir and libdir]],
   201: [
   202:     if test "X$withval" = "Xno"; then
   203:       use_additional=no
   204:     else
   205:       if test "X$withval" = "X"; then
   206:         AC_LIB_WITH_FINAL_PREFIX([
   207:           eval additional_includedir=\"$includedir\"
   208:           eval additional_libdir=\"$libdir\"
   209:         ])
   210:       else
   211:         additional_includedir="$withval/include"
   212:         additional_libdir="$withval/$acl_libdirstem"
   213:         if test "$acl_libdirstem2" != "$acl_libdirstem" \
   214:            && ! test -d "$withval/$acl_libdirstem"; then
   215:           additional_libdir="$withval/$acl_libdirstem2"
   216:         fi
   217:       fi
   218:     fi
   219: ])
   220:   dnl Search the library and its dependencies in $additional_libdir and
   221:   dnl $LDFLAGS. Using breadth-first-seach.
   222:   LIB[]NAME=
   223:   LTLIB[]NAME=
   224:   INC[]NAME=
   225:   LIB[]NAME[]_PREFIX=
   226:   dnl HAVE_LIB${NAME} is an indicator that LIB${NAME}, LTLIB${NAME} have been
   227:   dnl computed. So it has to be reset here.
   228:   HAVE_LIB[]NAME=
   229:   rpathdirs=
   230:   ltrpathdirs=
   231:   names_already_handled=
   232:   names_next_round='$1 $2'
   233:   while test -n "$names_next_round"; do
   234:     names_this_round="$names_next_round"
   235:     names_next_round=
   236:     for name in $names_this_round; do
   237:       already_handled=
   238:       for n in $names_already_handled; do
   239:         if test "$n" = "$name"; then
   240:           already_handled=yes
   241:           break
   242:         fi
   243:       done
   244:       if test -z "$already_handled"; then
   245:         names_already_handled="$names_already_handled $name"
   246:         dnl See if it was already located by an earlier AC_LIB_LINKFLAGS
   247:         dnl or AC_LIB_HAVE_LINKFLAGS call.
   248:         uppername=`echo "$name" | sed -e 'y|abcdefghijklmnopqrstuvwxyz./+-|ABCDEFGHIJKLMNOPQRSTUVWXYZ____|'`
   249:         eval value=\"\$HAVE_LIB$uppername\"
   250:         if test -n "$value"; then
   251:           if test "$value" = yes; then
   252:             eval value=\"\$LIB$uppername\"
   253:             test -z "$value" || LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$value"
   254:             eval value=\"\$LTLIB$uppername\"
   255:             test -z "$value" || LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }$value"
   256:           else
   257:             dnl An earlier call to AC_LIB_HAVE_LINKFLAGS has determined
   258:             dnl that this library doesn't exist. So just drop it.
   259:             :
   260:           fi
   261:         else
   262:           dnl Search the library lib$name in $additional_libdir and $LDFLAGS
   263:           dnl and the already constructed $LIBNAME/$LTLIBNAME.
   264:           found_dir=
   265:           found_la=
   266:           found_so=
   267:           found_a=
   268:           eval libname=\"$acl_libname_spec\"    # typically: libname=lib$name
   269:           if test -n "$acl_shlibext"; then
   270:             shrext=".$acl_shlibext"             # typically: shrext=.so
   271:           else
   272:             shrext=
   273:           fi
   274:           if test $use_additional = yes; then
   275:             dir="$additional_libdir"
   276:             dnl The same code as in the loop below:
   277:             dnl First look for a shared library.
   278:             if test -n "$acl_shlibext"; then
   279:               if test -f "$dir/$libname$shrext"; then
   280:                 found_dir="$dir"
   281:                 found_so="$dir/$libname$shrext"
   282:               else
   283:                 if test "$acl_library_names_spec" = '$libname$shrext$versuffix'; then
   284:                   ver=`(cd "$dir" && \
   285:                         for f in "$libname$shrext".*; do echo "$f"; done \
   286:                         | sed -e "s,^$libname$shrext\\\\.,," \
   287:                         | sort -t '.' -n -r -k1,1 -k2,2 -k3,3 -k4,4 -k5,5 \
   288:                         | sed 1q ) 2>/dev/null`
   289:                   if test -n "$ver" && test -f "$dir/$libname$shrext.$ver"; then
   290:                     found_dir="$dir"
   291:                     found_so="$dir/$libname$shrext.$ver"
   292:                   fi
   293:                 else
   294:                   eval library_names=\"$acl_library_names_spec\"
   295:                   for f in $library_names; do
   296:                     if test -f "$dir/$f"; then
   297:                       found_dir="$dir"
   298:                       found_so="$dir/$f"
   299:                       break
   300:                     fi
   301:                   done
   302:                 fi
   303:               fi
   304:             fi
   305:             dnl Then look for a static library.
   306:             if test "X$found_dir" = "X"; then
   307:               if test -f "$dir/$libname.$acl_libext"; then
   308:                 found_dir="$dir"
   309:                 found_a="$dir/$libname.$acl_libext"
   310:               fi
   311:             fi
   312:             if test "X$found_dir" != "X"; then
   313:               if test -f "$dir/$libname.la"; then
   314:                 found_la="$dir/$libname.la"
   315:               fi
   316:             fi
   317:           fi
   318:           if test "X$found_dir" = "X"; then
   319:             for x in $LDFLAGS $LTLIB[]NAME; do
   320:               AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
   321:               case "$x" in
   322:                 -L*)
   323:                   dir=`echo "X$x" | sed -e 's/^X-L//'`
   324:                   dnl First look for a shared library.
   325:                   if test -n "$acl_shlibext"; then
   326:                     if test -f "$dir/$libname$shrext"; then
   327:                       found_dir="$dir"
   328:                       found_so="$dir/$libname$shrext"
   329:                     else
   330:                       if test "$acl_library_names_spec" = '$libname$shrext$versuffix'; then
   331:                         ver=`(cd "$dir" && \
   332:                               for f in "$libname$shrext".*; do echo "$f"; done \
   333:                               | sed -e "s,^$libname$shrext\\\\.,," \
   334:                               | sort -t '.' -n -r -k1,1 -k2,2 -k3,3 -k4,4 -k5,5 \
   335:                               | sed 1q ) 2>/dev/null`
   336:                         if test -n "$ver" && test -f "$dir/$libname$shrext.$ver"; then
   337:                           found_dir="$dir"
   338:                           found_so="$dir/$libname$shrext.$ver"
   339:                         fi
   340:                       else
   341:                         eval library_names=\"$acl_library_names_spec\"
   342:                         for f in $library_names; do
   343:                           if test -f "$dir/$f"; then
   344:                             found_dir="$dir"
   345:                             found_so="$dir/$f"
   346:                             break
   347:                           fi
   348:                         done
   349:                       fi
   350:                     fi
   351:                   fi
   352:                   dnl Then look for a static library.
   353:                   if test "X$found_dir" = "X"; then
   354:                     if test -f "$dir/$libname.$acl_libext"; then
   355:                       found_dir="$dir"
   356:                       found_a="$dir/$libname.$acl_libext"
   357:                     fi
   358:                   fi
   359:                   if test "X$found_dir" != "X"; then
   360:                     if test -f "$dir/$libname.la"; then
   361:                       found_la="$dir/$libname.la"
   362:                     fi
   363:                   fi
   364:                   ;;
   365:               esac
   366:               if test "X$found_dir" != "X"; then
   367:                 break
   368:               fi
   369:             done
   370:           fi
   371:           if test "X$found_dir" != "X"; then
   372:             dnl Found the library.
   373:             LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-L$found_dir -l$name"
   374:             if test "X$found_so" != "X"; then
   375:               dnl Linking with a shared library. We attempt to hardcode its
   376:               dnl directory into the executable's runpath, unless it's the
   377:               dnl standard /usr/lib.
   378:               if test "$enable_rpath" = no \
   379:                  || test "X$found_dir" = "X/usr/$acl_libdirstem" \
   380:                  || test "X$found_dir" = "X/usr/$acl_libdirstem2"; then
   381:                 dnl No hardcoding is needed.
   382:                 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
   383:               else
   384:                 dnl Use an explicit option to hardcode DIR into the resulting
   385:                 dnl binary.
   386:                 dnl Potentially add DIR to ltrpathdirs.
   387:                 dnl The ltrpathdirs will be appended to $LTLIBNAME at the end.
   388:                 haveit=
   389:                 for x in $ltrpathdirs; do
   390:                   if test "X$x" = "X$found_dir"; then
   391:                     haveit=yes
   392:                     break
   393:                   fi
   394:                 done
   395:                 if test -z "$haveit"; then
   396:                   ltrpathdirs="$ltrpathdirs $found_dir"
   397:                 fi
   398:                 dnl The hardcoding into $LIBNAME is system dependent.
   399:                 if test "$acl_hardcode_direct" = yes; then
   400:                   dnl Using DIR/libNAME.so during linking hardcodes DIR into the
   401:                   dnl resulting binary.
   402:                   LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
   403:                 else
   404:                   if test -n "$acl_hardcode_libdir_flag_spec" && test "$acl_hardcode_minus_L" = no; then
   405:                     dnl Use an explicit option to hardcode DIR into the resulting
   406:                     dnl binary.
   407:                     LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
   408:                     dnl Potentially add DIR to rpathdirs.
   409:                     dnl The rpathdirs will be appended to $LIBNAME at the end.
   410:                     haveit=
   411:                     for x in $rpathdirs; do
   412:                       if test "X$x" = "X$found_dir"; then
   413:                         haveit=yes
   414:                         break
   415:                       fi
   416:                     done
   417:                     if test -z "$haveit"; then
   418:                       rpathdirs="$rpathdirs $found_dir"
   419:                     fi
   420:                   else
   421:                     dnl Rely on "-L$found_dir".
   422:                     dnl But don't add it if it's already contained in the LDFLAGS
   423:                     dnl or the already constructed $LIBNAME
   424:                     haveit=
   425:                     for x in $LDFLAGS $LIB[]NAME; do
   426:                       AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
   427:                       if test "X$x" = "X-L$found_dir"; then
   428:                         haveit=yes
   429:                         break
   430:                       fi
   431:                     done
   432:                     if test -z "$haveit"; then
   433:                       LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$found_dir"
   434:                     fi
   435:                     if test "$acl_hardcode_minus_L" != no; then
   436:                       dnl FIXME: Not sure whether we should use
   437:                       dnl "-L$found_dir -l$name" or "-L$found_dir $found_so"
   438:                       dnl here.
   439:                       LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
   440:                     else
   441:                       dnl We cannot use $acl_hardcode_runpath_var and LD_RUN_PATH
   442:                       dnl here, because this doesn't fit in flags passed to the
   443:                       dnl compiler. So give up. No hardcoding. This affects only
   444:                       dnl very old systems.
   445:                       dnl FIXME: Not sure whether we should use
   446:                       dnl "-L$found_dir -l$name" or "-L$found_dir $found_so"
   447:                       dnl here.
   448:                       LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-l$name"
   449:                     fi
   450:                   fi
   451:                 fi
   452:               fi
   453:             else
   454:               if test "X$found_a" != "X"; then
   455:                 dnl Linking with a static library.
   456:                 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_a"
   457:               else
   458:                 dnl We shouldn't come here, but anyway it's good to have a
   459:                 dnl fallback.
   460:                 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$found_dir -l$name"
   461:               fi
   462:             fi
   463:             dnl Assume the include files are nearby.
   464:             additional_includedir=
   465:             case "$found_dir" in
   466:               */$acl_libdirstem | */$acl_libdirstem/)
   467:                 basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e "s,/$acl_libdirstem/"'*$,,'`
   468:                 if test "$name" = '$1'; then
   469:                   LIB[]NAME[]_PREFIX="$basedir"
   470:                 fi
   471:                 additional_includedir="$basedir/include"
   472:                 ;;
   473:               */$acl_libdirstem2 | */$acl_libdirstem2/)
   474:                 basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e "s,/$acl_libdirstem2/"'*$,,'`
   475:                 if test "$name" = '$1'; then
   476:                   LIB[]NAME[]_PREFIX="$basedir"
   477:                 fi
   478:                 additional_includedir="$basedir/include"
   479:                 ;;
   480:             esac
   481:             if test "X$additional_includedir" != "X"; then
   482:               dnl Potentially add $additional_includedir to $INCNAME.
   483:               dnl But don't add it
   484:               dnl   1. if it's the standard /usr/include,
   485:               dnl   2. if it's /usr/local/include and we are using GCC on Linux,
   486:               dnl   3. if it's already present in $CPPFLAGS or the already
   487:               dnl      constructed $INCNAME,
   488:               dnl   4. if it doesn't exist as a directory.
   489:               if test "X$additional_includedir" != "X/usr/include"; then
   490:                 haveit=
   491:                 if test "X$additional_includedir" = "X/usr/local/include"; then
   492:                   if test -n "$GCC"; then
   493:                     case $host_os in
   494:                       linux* | gnu* | k*bsd*-gnu) haveit=yes;;
   495:                     esac
   496:                   fi
   497:                 fi
   498:                 if test -z "$haveit"; then
   499:                   for x in $CPPFLAGS $INC[]NAME; do
   500:                     AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
   501:                     if test "X$x" = "X-I$additional_includedir"; then
   502:                       haveit=yes
   503:                       break
   504:                     fi
   505:                   done
   506:                   if test -z "$haveit"; then
   507:                     if test -d "$additional_includedir"; then
   508:                       dnl Really add $additional_includedir to $INCNAME.
   509:                       INC[]NAME="${INC[]NAME}${INC[]NAME:+ }-I$additional_includedir"
   510:                     fi
   511:                   fi
   512:                 fi
   513:               fi
   514:             fi
   515:             dnl Look for dependencies.
   516:             if test -n "$found_la"; then
   517:               dnl Read the .la file. It defines the variables
   518:               dnl dlname, library_names, old_library, dependency_libs, current,
   519:               dnl age, revision, installed, dlopen, dlpreopen, libdir.
   520:               save_libdir="$libdir"
   521:               case "$found_la" in
   522:                 */* | *\\*) . "$found_la" ;;
   523:                 *) . "./$found_la" ;;
   524:               esac
   525:               libdir="$save_libdir"
   526:               dnl We use only dependency_libs.
   527:               for dep in $dependency_libs; do
   528:                 case "$dep" in
   529:                   -L*)
   530:                     additional_libdir=`echo "X$dep" | sed -e 's/^X-L//'`
   531:                     dnl Potentially add $additional_libdir to $LIBNAME and $LTLIBNAME.
   532:                     dnl But don't add it
   533:                     dnl   1. if it's the standard /usr/lib,
   534:                     dnl   2. if it's /usr/local/lib and we are using GCC on Linux,
   535:                     dnl   3. if it's already present in $LDFLAGS or the already
   536:                     dnl      constructed $LIBNAME,
   537:                     dnl   4. if it doesn't exist as a directory.
   538:                     if test "X$additional_libdir" != "X/usr/$acl_libdirstem" \
   539:                        && test "X$additional_libdir" != "X/usr/$acl_libdirstem2"; then
   540:                       haveit=
   541:                       if test "X$additional_libdir" = "X/usr/local/$acl_libdirstem" \
   542:                          || test "X$additional_libdir" = "X/usr/local/$acl_libdirstem2"; then
   543:                         if test -n "$GCC"; then
   544:                           case $host_os in
   545:                             linux* | gnu* | k*bsd*-gnu) haveit=yes;;
   546:                           esac
   547:                         fi
   548:                       fi
   549:                       if test -z "$haveit"; then
   550:                         haveit=
   551:                         for x in $LDFLAGS $LIB[]NAME; do
   552:                           AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
   553:                           if test "X$x" = "X-L$additional_libdir"; then
   554:                             haveit=yes
   555:                             break
   556:                           fi
   557:                         done
   558:                         if test -z "$haveit"; then
   559:                           if test -d "$additional_libdir"; then
   560:                             dnl Really add $additional_libdir to $LIBNAME.
   561:                             LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$additional_libdir"
   562:                           fi
   563:                         fi
   564:                         haveit=
   565:                         for x in $LDFLAGS $LTLIB[]NAME; do
   566:                           AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
   567:                           if test "X$x" = "X-L$additional_libdir"; then
   568:                             haveit=yes
   569:                             break
   570:                           fi
   571:                         done
   572:                         if test -z "$haveit"; then
   573:                           if test -d "$additional_libdir"; then
   574:                             dnl Really add $additional_libdir to $LTLIBNAME.
   575:                             LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-L$additional_libdir"
   576:                           fi
   577:                         fi
   578:                       fi
   579:                     fi
   580:                     ;;
   581:                   -R*)
   582:                     dir=`echo "X$dep" | sed -e 's/^X-R//'`
   583:                     if test "$enable_rpath" != no; then
   584:                       dnl Potentially add DIR to rpathdirs.
   585:                       dnl The rpathdirs will be appended to $LIBNAME at the end.
   586:                       haveit=
   587:                       for x in $rpathdirs; do
   588:                         if test "X$x" = "X$dir"; then
   589:                           haveit=yes
   590:                           break
   591:                         fi
   592:                       done
   593:                       if test -z "$haveit"; then
   594:                         rpathdirs="$rpathdirs $dir"
   595:                       fi
   596:                       dnl Potentially add DIR to ltrpathdirs.
   597:                       dnl The ltrpathdirs will be appended to $LTLIBNAME at the end.
   598:                       haveit=
   599:                       for x in $ltrpathdirs; do
   600:                         if test "X$x" = "X$dir"; then
   601:                           haveit=yes
   602:                           break
   603:                         fi
   604:                       done
   605:                       if test -z "$haveit"; then
   606:                         ltrpathdirs="$ltrpathdirs $dir"
   607:                       fi
   608:                     fi
   609:                     ;;
   610:                   -l*)
   611:                     dnl Handle this in the next round.
   612:                     names_next_round="$names_next_round "`echo "X$dep" | sed -e 's/^X-l//'`
   613:                     ;;
   614:                   *.la)
   615:                     dnl Handle this in the next round. Throw away the .la's
   616:                     dnl directory; it is already contained in a preceding -L
   617:                     dnl option.
   618:                     names_next_round="$names_next_round "`echo "X$dep" | sed -e 's,^X.*/,,' -e 's,^lib,,' -e 's,\.la$,,'`
   619:                     ;;
   620:                   *)
   621:                     dnl Most likely an immediate library name.
   622:                     LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$dep"
   623:                     LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }$dep"
   624:                     ;;
   625:                 esac
   626:               done
   627:             fi
   628:           else
   629:             dnl Didn't find the library; assume it is in the system directories
   630:             dnl known to the linker and runtime loader. (All the system
   631:             dnl directories known to the linker should also be known to the
   632:             dnl runtime loader, otherwise the system is severely misconfigured.)
   633:             LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-l$name"
   634:             LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-l$name"
   635:           fi
   636:         fi
   637:       fi
   638:     done
   639:   done
   640:   if test "X$rpathdirs" != "X"; then
   641:     if test -n "$acl_hardcode_libdir_separator"; then
   642:       dnl Weird platform: only the last -rpath option counts, the user must
   643:       dnl pass all path elements in one option. We can arrange that for a
   644:       dnl single library, but not when more than one $LIBNAMEs are used.
   645:       alldirs=
   646:       for found_dir in $rpathdirs; do
   647:         alldirs="${alldirs}${alldirs:+$acl_hardcode_libdir_separator}$found_dir"
   648:       done
   649:       dnl Note: acl_hardcode_libdir_flag_spec uses $libdir and $wl.
   650:       acl_save_libdir="$libdir"
   651:       libdir="$alldirs"
   652:       eval flag=\"$acl_hardcode_libdir_flag_spec\"
   653:       libdir="$acl_save_libdir"
   654:       LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag"
   655:     else
   656:       dnl The -rpath options are cumulative.
   657:       for found_dir in $rpathdirs; do
   658:         acl_save_libdir="$libdir"
   659:         libdir="$found_dir"
   660:         eval flag=\"$acl_hardcode_libdir_flag_spec\"
   661:         libdir="$acl_save_libdir"
   662:         LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag"
   663:       done
   664:     fi
   665:   fi
   666:   if test "X$ltrpathdirs" != "X"; then
   667:     dnl When using libtool, the option that works for both libraries and
   668:     dnl executables is -R. The -R options are cumulative.
   669:     for found_dir in $ltrpathdirs; do
   670:       LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-R$found_dir"
   671:     done
   672:   fi
   673:   popdef([P_A_C_K])
   674:   popdef([PACKLIBS])
   675:   popdef([PACKUP])
   676:   popdef([PACK])
   677:   popdef([NAME])
   678: ])
   679: 
   680: dnl AC_LIB_APPENDTOVAR(VAR, CONTENTS) appends the elements of CONTENTS to VAR,
   681: dnl unless already present in VAR.
   682: dnl Works only for CPPFLAGS, not for LIB* variables because that sometimes
   683: dnl contains two or three consecutive elements that belong together.
   684: AC_DEFUN([AC_LIB_APPENDTOVAR],
   685: [
   686:   for element in [$2]; do
   687:     haveit=
   688:     for x in $[$1]; do
   689:       AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
   690:       if test "X$x" = "X$element"; then
   691:         haveit=yes
   692:         break
   693:       fi
   694:     done
   695:     if test -z "$haveit"; then
   696:       [$1]="${[$1]}${[$1]:+ }$element"
   697:     fi
   698:   done
   699: ])
   700: 
   701: dnl For those cases where a variable contains several -L and -l options
   702: dnl referring to unknown libraries and directories, this macro determines the
   703: dnl necessary additional linker options for the runtime path.
   704: dnl AC_LIB_LINKFLAGS_FROM_LIBS([LDADDVAR], [LIBSVALUE], [USE-LIBTOOL])
   705: dnl sets LDADDVAR to linker options needed together with LIBSVALUE.
   706: dnl If USE-LIBTOOL evaluates to non-empty, linking with libtool is assumed,
   707: dnl otherwise linking without libtool is assumed.
   708: AC_DEFUN([AC_LIB_LINKFLAGS_FROM_LIBS],
   709: [
   710:   AC_REQUIRE([AC_LIB_RPATH])
   711:   AC_REQUIRE([AC_LIB_PREPARE_MULTILIB])
   712:   $1=
   713:   if test "$enable_rpath" != no; then
   714:     if test -n "$acl_hardcode_libdir_flag_spec" && test "$acl_hardcode_minus_L" = no; then
   715:       dnl Use an explicit option to hardcode directories into the resulting
   716:       dnl binary.
   717:       rpathdirs=
   718:       next=
   719:       for opt in $2; do
   720:         if test -n "$next"; then
   721:           dir="$next"
   722:           dnl No need to hardcode the standard /usr/lib.
   723:           if test "X$dir" != "X/usr/$acl_libdirstem" \
   724:              && test "X$dir" != "X/usr/$acl_libdirstem2"; then
   725:             rpathdirs="$rpathdirs $dir"
   726:           fi
   727:           next=
   728:         else
   729:           case $opt in
   730:             -L) next=yes ;;
   731:             -L*) dir=`echo "X$opt" | sed -e 's,^X-L,,'`
   732:                  dnl No need to hardcode the standard /usr/lib.
   733:                  if test "X$dir" != "X/usr/$acl_libdirstem" \
   734:                     && test "X$dir" != "X/usr/$acl_libdirstem2"; then
   735:                    rpathdirs="$rpathdirs $dir"
   736:                  fi
   737:                  next= ;;
   738:             *) next= ;;
   739:           esac
   740:         fi
   741:       done
   742:       if test "X$rpathdirs" != "X"; then
   743:         if test -n ""$3""; then
   744:           dnl libtool is used for linking. Use -R options.
   745:           for dir in $rpathdirs; do
   746:             $1="${$1}${$1:+ }-R$dir"
   747:           done
   748:         else
   749:           dnl The linker is used for linking directly.
   750:           if test -n "$acl_hardcode_libdir_separator"; then
   751:             dnl Weird platform: only the last -rpath option counts, the user
   752:             dnl must pass all path elements in one option.
   753:             alldirs=
   754:             for dir in $rpathdirs; do
   755:               alldirs="${alldirs}${alldirs:+$acl_hardcode_libdir_separator}$dir"
   756:             done
   757:             acl_save_libdir="$libdir"
   758:             libdir="$alldirs"
   759:             eval flag=\"$acl_hardcode_libdir_flag_spec\"
   760:             libdir="$acl_save_libdir"
   761:             $1="$flag"
   762:           else
   763:             dnl The -rpath options are cumulative.
   764:             for dir in $rpathdirs; do
   765:               acl_save_libdir="$libdir"
   766:               libdir="$dir"
   767:               eval flag=\"$acl_hardcode_libdir_flag_spec\"
   768:               libdir="$acl_save_libdir"
   769:               $1="${$1}${$1:+ }$flag"
   770:             done
   771:           fi
   772:         fi
   773:       fi
   774:     fi
   775:   fi
   776:   AC_SUBST([$1])
   777: ])

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