1# Copyright (C) 2001, 2006, 2008-2012, 2014-2015, 2018 Sergey Poznyakoff 2# 3# This program is free software; you can redistribute it and/or modify 4# it under the terms of the GNU General Public License as published by 5# the Free Software Foundation; either version 3, or (at your option) 6# any later version. 7# 8# This program is distributed in the hope that it will be useful, 9# but WITHOUT ANY WARRANTY; without even the implied warranty of 10# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11# GNU General Public License for more details. 12# 13# You should have received a copy of the GNU General Public License along 14# with this program. If not, see <http://www.gnu.org/licenses/>. 15 16AC_DEFUN([PM_ENABLE],[ 17 AC_ARG_ENABLE($1, 18 AC_HELP_STRING([--disable-$1], [Disable pam_$1]), 19 [build_$1=$enableval], 20 [build_$1=m4_if([$2],[],yes,probe)]) 21 m4_pushdef([upmodname],translit($1, [a-z.-], [A-Z__])) 22 m4_if([$2],[],,[if test $build_$1 != no; then 23 $2 24 test $build_$1 = probe && build_$1=no 25 fi]) 26 AM_CONDITIONAL([PAM_COND_]upmodname, [test "$[]build_$1" = "yes"]) 27 m4_popdef([upmodname]) 28]) 29 30dnl PM_FLUSHLEFT -- remove all whitespace at the beginning of lines 31dnl This is useful for c-code which may include cpp statements 32dnl 33define([PM_FLUSHLEFT], 34 [changequote(`,')dnl 35patsubst(`$1', `^[ ]+') 36changequote([,])])dnl 37 38dnl PM_RESULT_ACTIONS -- generate shell code for the result of a test 39dnl $1 -- CVAR -- cache variable to check 40dnl $2 -- NAME -- if not empty, used to generate a default value TRUE: 41dnl `AC_DEFINE(HAVE_NAME)' 42dnl $2 -- TRUE -- what to do if the CVAR is not `no' 43dnl $3 -- FALSE -- what to do otherwise; defaults to `:' 44dnl 45AC_DEFUN([PM_RESULT_ACTIONS], [ 46[if test "$$1" != "" -a "$$1" != no; then 47 ]ifelse([$3], , 48 [AC_DEFINE(HAVE_]translit($2, [a-z ./<>], [A-Z___])[,1,[FIXME])], 49 [$3])[ 50else 51 ]ifelse([$4], , [:], [$4])[ 52fi]])dnl 53 54dnl PM_CHECK_STRUCT_FIELD -- See if a structure has a particular field 55dnl $1 - NAME -- name of structure 56dnl $2 - FIELD -- name of field to test 57dnl $3 - INCLS -- C program text to inculde necessary files for testing 58dnl $4 - TRUE -- what to do if struct NAME has FIELD; defaults to 59dnl `AC_DEFINE(HAVE_NAME_FIELD)' 60dnl $5 - FALSE -- what to do if not; defaults to `:' 61dnl 62dnl NOTE: We still don't use AC_CHECK_MEMBERS, since it has (as of 63dnl autoconf 2.53) a bug which prevents it from recognizing members 64dnl of aggregate type. 65 66AC_DEFUN([PM_CHECK_STRUCT_FIELD], [ 67 define([pm_CVAR], [pm_cv_struct_]translit($1_$2, [A-Z], [a-z]))dnl 68 AC_CACHE_CHECK([whether struct $1 has $2 field], pm_CVAR, 69 AC_TRY_COMPILE(PM_FLUSHLEFT([$3]), 70 [struct $1 pm_x; int pm_y = sizeof pm_x.$2;], 71 pm_CVAR[=yes], pm_CVAR[=no])) 72 PM_RESULT_ACTIONS(pm_CVAR, [$1_$2], [$4], [$5])dnl 73 undefine([pm_CVAR])])dnl 74 75dnl Arguments: 76dnl $1 -- Library to look for 77dnl $2 -- Function to check in the library 78dnl $3 -- Any additional libraries that might be needed 79dnl $4 -- Action to be taken when test succeeds 80dnl $5 -- Action to be taken when test fails 81dnl $6 -- Directories where the library may reside 82AC_DEFUN([PM_CHECK_LIB], 83[m4_ifval([$4], , [AH_CHECK_LIB([$1])])dnl 84AS_VAR_PUSHDEF([pm_Lib], [pm_cv_lib_$1])dnl 85AC_CACHE_CHECK([for $2 in -l$1], [pm_Lib], 86[AS_VAR_SET([pm_Lib], [no]) 87 pm_check_lib_save_LIBS=$LIBS 88 for path in "" $6 89 do 90 if test -n "$path"; then 91 pm_ldflags="-L$path -l$1 $3" 92 else 93 pm_ldflags="-l$1 $3" 94 fi 95 LIBS="$pm_ldflags $pm_check_lib_save_LIBS" 96 AC_LINK_IFELSE([AC_LANG_CALL([], [$2])], 97 [AS_VAR_SET([pm_Lib], ["$pm_ldflags"]) 98 break]) 99 done 100 LIBS=$pm_check_lib_save_LIBS]) 101AS_IF([test "AS_VAR_GET([pm_Lib])" != no], 102 [m4_default([$4], [AC_DEFINE_UNQUOTED(AS_TR_CPP(HAVE_LIB$1)) 103 LIBS="-l$1 $LIBS" 104])], 105 [$5])dnl 106AS_VAR_POPDEF([pm_Lib])dnl 107])# PM_CHECK_LIB 108 109 110