diff options
Diffstat (limited to 'm4/krb5.m4')
| -rw-r--r-- | m4/krb5.m4 | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/m4/krb5.m4 b/m4/krb5.m4 new file mode 100644 index 0000000..2474b47 --- /dev/null +++ b/m4/krb5.m4 @@ -0,0 +1,164 @@ +dnl krb5.m4 -- Find the compiler and linker flags for Kerberos v5. +dnl $Id$ +dnl +dnl Finds the compiler and linker flags for linking with Kerberos v5 libraries +dnl and sets the substitution variables KRB5_CPPFLAGS, KRB5_LDFLAGS, and +dnl KRB5_LIBS. Provides the --with-krb5 configure option to specify a +dnl non-standard path to the Kerberos libraries. Uses krb5-config where +dnl available unless reduced dependencies is requested. +dnl +dnl Provides the macro RRA_LIB_KRB5 and sets the substitution variables +dnl KRB5_CPPFLAGS, KRB5_LDFLAGS, and KRB5_LIBS. Also provides +dnl RRA_LIB_KRB5_SET to set CPPFLAGS, LDFLAGS, and LIBS to include the +dnl Kerberos libraries; RRA_LIB_KRB5_SWITCH to do the same but save the +dnl current values first; and RRA_LIB_KRB5_RESTORE to restore those settings +dnl to before the last RRA_LIB_KRB5_SWITCH. +dnl +dnl Written by Russ Allbery <rra@stanford.edu> +dnl Copyright 2005, 2006, 2007, 2008 +dnl Board of Trustees, Leland Stanford Jr. University +dnl See LICENSE for licensing terms. + +dnl Set CPPFLAGS, LDFLAGS, and LIBS to values including the Kerberos v5 +dnl settings. +AC_DEFUN([RRA_LIB_KRB5_SET], +[CPPFLAGS="$KRB5_CPPFLAGS $CPPFLAGS" + LDFLAGS="$KRB5_LDFLAGS $LDFLAGS" + LIBS="$KRB5_LIBS $LIBS"]) + +dnl Save the current CPPFLAGS, LDFLAGS, and LIBS settings and switch to +dnl versions that include the Kerberos v5 flags. Used as a wrapper, with +dnl RRA_LIB_KRB5_RESTORE, around tests. +AC_DEFUN([RRA_LIB_KRB5_SWITCH], +[rra_krb5_save_CPPFLAGS="$CPPFLAGS" + rra_krb5_save_LDFLAGS="$LDFLAGS" + rra_krb5_save_LIBS="$LIBS" + RRA_LIB_KRB5_SET]) + +dnl Restore CPPFLAGS, LDFLAGS, and LIBS to their previous values (before +dnl RRA_LIB_KRB5_SWITCH was called). +AC_DEFUN([RRA_LIB_KRB5_RESTORE], +[CPPFLAGS="$rra_krb5_save_CPPFLAGS" + LDFLAGS="$rra_krb5_save_LDFLAGS" + LIBS="$rra_krb5_save_LIBS"]) + +dnl Set KRB5_CPPFLAGS and KRB5_LDFLAGS based on rra_krb5_root. +AC_DEFUN([_RRA_LIB_KRB5_PATHS], +[AS_IF([test x"$rra_krb5_root" != x], + [AS_IF([test x"$rra_krb5_root" != x/usr], + [KRB5_CPPFLAGS="-I${rra_krb5_root}/include"]) + KRB5_LDFLAGS="-L${rra_krb5_root}/lib"])]) + +dnl Does the appropriate library checks for reduced-dependency Kerberos v5 +dnl linkage. +AC_DEFUN([_RRA_LIB_KRB5_REDUCED], +[RRA_LIB_KRB5_SWITCH + AC_CHECK_LIB([krb5], [krb5_init_context], [KRB5_LIBS="-lkrb5"], + [AC_MSG_ERROR([cannot find usable Kerberos v5 library])]) + LIBS="$KRB5_LIBS $LIBS" + AC_CHECK_FUNCS([krb5_get_error_message], + [AC_CHECK_FUNCS([krb5_free_error_message])], + [AC_CHECK_FUNCS([krb5_get_err_txt], , + [AC_CHECK_LIB([ksvc], [krb5_svc_get_msg], + [KRB5_LIBS="$KRB5_LIBS -lksvc" + AC_DEFINE([HAVE_KRB5_SVC_GET_MSG], [1]) + AC_CHECK_HEADERS([ibm_svc/krb5_svc.h])], + [AC_CHECK_LIB([com_err], [com_err], + [KRB5_LIBS="$KRB5_LIBS -lcom_err"], + [AC_MSG_ERROR([cannot find usable com_err library])]) + AC_CHECK_HEADERS([et/com_err.h])])])]) + RRA_LIB_KRB5_RESTORE]) + +dnl Does the appropriate library checks for Kerberos v5 linkage when we don't +dnl have krb5-config or reduced dependencies. +AC_DEFUN([_RRA_LIB_KRB5_MANUAL], +[RRA_LIB_KRB5_SWITCH + rra_krb5_extra= + LIBS= + AC_SEARCH_LIBS([res_search], [resolv], , + [AC_SEARCH_LIBS([__res_search], [resolv])]) + AC_SEARCH_LIBS([gethostbyname], [nsl]) + AC_SEARCH_LIBS([socket], [socket], , + [AC_CHECK_LIB([nsl], [socket], [LIBS="-lnsl -lsocket $LIBS"], , + [-lsocket])]) + AC_SEARCH_LIBS([crypt], [crypt]) + rra_krb5_extra="$LIBS" + LIBS="$rra_krb5_save_LIBS" + AC_CHECK_LIB([krb5], [krb5_init_context], + [KRB5_LIBS="-lkrb5 -lasn1 -lroken -lcrypto -lcom_err $rra_krb5_extra"], + [AC_CHECK_LIB([krb5support], [krb5int_getspecific], + [rra_krb5_extra="-lkrb5support $rra_krb5_extra"], + [AC_CHECK_LIB([pthreads], [pthread_setspecific], + [rra_krb5_pthread="-lpthreads"], + [AC_CHECK_LIB([pthread], [pthread_setspecific], + [rra_krb5_pthread="-lpthread"])]) + AC_CHECK_LIB([krb5support], [krb5int_setspecific], + [rra_krb5_extra="-lkrb5support $rra_krb5_extra $rra_krb5_pthread"], + [$rra_krb5_pthread])]) + AC_CHECK_LIB([com_err], [error_message], + [rra_krb5_extra="-lcom_err $rra_krb5_extra"]) + AC_CHECK_LIB([ksvc], [krb5_svc_get_msg], + [rra_krb5_extra="-lksvc $rra_krb5_extra"]) + AC_CHECK_LIB([k5crypto], [krb5int_hash_md5], + [rra_krb5_extra="-lk5crypto $rra_krb5_extra"]) + AC_CHECK_LIB([k5profile], [profile_get_values], + [rra_krb5_extra="-lk5profile $rra_krb5_extra"]) + AC_CHECK_LIB([krb5], [krb5_cc_default], + [KRB5_LIBS="-lkrb5 $rra_krb5_extra"], + [AC_MSG_ERROR([cannot find usable Kerberos v5 library])], + [$rra_krb5_extra])], + [-lasn1 -lroken -lcrypto -lcom_err $rra_krb5_extra]) + LIBS="$KRB5_LIBS $LIBS" + AC_CHECK_FUNCS([krb5_get_error_message], + [AC_CHECK_FUNCS([krb5_free_error_message])], + [AC_CHECK_FUNCS([krb5_get_err_txt], , + [AC_CHECK_FUNCS([krb5_svc_get_msg], + [AC_CHECK_HEADERS([ibm_svc/krb5_svc.h])], + [AC_CHECK_HEADERS([et/com_err.h])])])]) + RRA_LIB_KRB5_RESTORE]) + +dnl The main macro. +AC_DEFUN([RRA_LIB_KRB5], +[AC_REQUIRE([RRA_ENABLE_REDUCED_DEPENDS]) +rra_krb5_root= +KRB5_CPPFLAGS= +KRB5_LDFLAGS= +KRB5_LIBS= +AC_SUBST([KRB5_CPPFLAGS]) +AC_SUBST([KRB5_LDFLAGS]) +AC_SUBST([KRB5_LIBS]) +AC_ARG_WITH([krb5], + [AC_HELP_STRING([--with-krb5=DIR], + [Location of Kerberos v5 headers and libraries])], + [AS_IF([test x"$withval" != xyes && test x"$withval" != xno], + [rra_krb5_root="$withval"])]) +AS_IF([test x"$rra_reduced_depends" = xtrue], + [_RRA_LIB_KRB5_PATHS + _RRA_LIB_KRB5_REDUCED], + [AC_ARG_VAR([KRB5_CONFIG], [Path to krb5-config]) + AS_IF([test x"$rra_krb5_root" != x], + [AS_IF([test -x "${rra_krb5_root}/bin/krb5-config"], + [KRB5_CONFIG="${rra_krb5_root}/bin/krb5-config"])], + [AC_PATH_PROG([KRB5_CONFIG], [krb5-config])]) + AS_IF([test x"$KRB5_CONFIG" != x], + [AC_CACHE_CHECK([for krb5 support in krb5-config], + [rra_cv_lib_krb5_config], + [AS_IF(["$KRB5_CONFIG" | grep krb5 > /dev/null 2>&1], + [rra_cv_lib_krb5_config=yes], + [rra_cv_lib_krb5_config=no])]) + AS_IF([test "$rra_cv_lib_krb5_config" = yes], + [KRB5_CPPFLAGS=`"$KRB5_CONFIG" --cflags krb5` + KRB5_LIBS=`"$KRB5_CONFIG" --libs krb5`], + [KRB5_CPPFLAGS=`"$KRB5_CONFIG" --cflags` + KRB5_LIBS=`"$KRB5_CONFIG" --libs`]) + KRB5_CPPFLAGS=`echo "$KRB5_CPPFLAGS" | sed 's%-I/usr/include ?%%'` + RRA_LIB_KRB5_SWITCH + AC_CHECK_FUNCS([krb5_get_error_message], + [AC_CHECK_FUNCS([krb5_free_error_message])], + [AC_CHECK_FUNCS([krb5_get_err_txt], , + [AC_CHECK_FUNCS([krb5_svc_get_msg], + [AC_CHECK_HEADERS([ibm_svc/krb5_svc.h])], + [AC_CHECK_HEADERS([et/com_err.h])])])]) + RRA_LIB_KRB5_RESTORE], + [_RRA_LIB_KRB5_PATHS + _RRA_LIB_KRB5_MANUAL])])]) |