diff options
Diffstat (limited to 'm4/krb4.m4')
| -rw-r--r-- | m4/krb4.m4 | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/m4/krb4.m4 b/m4/krb4.m4 new file mode 100644 index 0000000..997a3a4 --- /dev/null +++ b/m4/krb4.m4 @@ -0,0 +1,143 @@ +dnl krb4.m4 -- Find the compiler and linker flags for Kerberos v4. +dnl $Id$ +dnl +dnl Finds the compiler and linker flags for linking with Kerberos v4 libraries +dnl and sets the substitution variables KRB4_CPPFLAGS, KRB4_LDFLAGS, and +dnl KRB4_LIBS. Provides the --with-krb4 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_KRB4 and sets the substitution variables +dnl KRB4_CPPFLAGS, KRB4_LDFLAGS, and KRB4_LIBS. Also provides +dnl RRA_LIB_KRB4_SET to set CPPFLAGS, LDFLAGS, and LIBS to include the +dnl Kerberos libraries; RRA_LIB_KRB4_SWITCH to do the same but save the +dnl current values first; and RRA_LIB_KRB4_RESTORE to restore those settings +dnl to before the last RRA_LIB_KRB4_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 v4 +dnl settings. +AC_DEFUN([RRA_LIB_KRB4_SET], +[CPPFLAGS="$KRB4_CPPFLAGS $CPPFLAGS" + LDFLAGS="$KRB4_LDFLAGS $LDFLAGS" + LIBS="$KRB4_LIBS $LIBS"]) + +dnl Save the current CPPFLAGS, LDFLAGS, and LIBS settings and switch to +dnl versions that include the Kerberos v4 flags. Used as a wrapper, with +dnl RRA_LIB_KRB4_RESTORE, around tests. +AC_DEFUN([RRA_LIB_KRB4_SWITCH], +[rra_krb4_save_CPPFLAGS="$CPPFLAGS" + rra_krb4_save_LDFLAGS="$LDFLAGS" + rra_krb4_save_LIBS="$LIBS" + RRA_LIB_KRB4_SET]) + +dnl Restore CPPFLAGS, LDFLAGS, and LIBS to their previous values (before +dnl RRA_LIB_KRB4_SWITCH was called). +AC_DEFUN([RRA_LIB_KRB4_RESTORE], +[CPPFLAGS="$rra_krb4_save_CPPFLAGS" + LDFLAGS="$rra_krb4_save_LDFLAGS" + LIBS="$rra_krb4_save_LIBS"]) + +dnl Set KRB4_CPPFLAGS and KRB4_LDFLAGS based on rra_krb4_root. +AC_DEFUN([_RRA_LIB_KRB4_PATHS], +[AS_IF([test x"$rra_krb4_root" != x], + [AS_IF([test x"$rra_krb4_root" != x/usr], + [KRB4_CPPFLAGS="-I${rra_krb4_root}/include"]) + KRB4_LDFLAGS="-L${rra_krb4_root}/lib"])]) + +dnl Does the appropriate library checks for reduced-dependency Kerberos v4 +dnl linkage. +AC_DEFUN([_RRA_LIB_KRB4_REDUCED], +[RRA_LIB_KRB4_SWITCH + AC_CHECK_LIB([krb4], [krb_get_svc_in_tkt], [KRB4_LIBS="-lkrb4"], + [AC_CHECK_LIB([krb], [krb_get_svc_in_tkt], [KRB4_LIBS="-lkrb"], + [AC_MSG_ERROR([cannot find usable Kerberos v4 library])])]) + RRA_LIB_KRB4_RESTORE]) + +dnl Does the appropriate library checks for Kerberos v4 linkage when we don't +dnl have krb5-config or reduced dependencies. +AC_DEFUN([_RRA_LIB_KRB4_MANUAL], +[RRA_LIB_KRB4_SWITCH + rra_krb4_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 $LIBS"], , + [-lsocket])]) + AC_SEARCH_LIBS([crypt], [crypt]) + rra_krb4_extra="$LIBS" + LIBS="$rra_krb4_save_LIBS" + AC_CHECK_LIB([crypto], [des_set_key], + [rra_krb4_extra="-lcrypto $rra_krb4_extra"], + [AC_CHECK_LIB([des], [des_set_key], + [rra_krb4_extra="-ldes $rra_krb4_extra"])]) + AC_CHECK_LIB([krb], [krb_get_svc_in_tkt], + [KRB4_LIBS="-lkrb $rra_krb4_extra"], + [rra_krb4_extra="-ldes425 -lkrb5 -lk5crypto -lcom_err $rra_krb4_extra" + AC_CHECK_LIB([krb5support], [krb5int_getspecific], + [rra_krb4_extra="$rra_krb4_extra -lkrb5support"], + [AC_CHECK_LIB([pthreads], [pthread_setspecific], + [rra_krb4_pthread="-lpthreads"], + [AC_CHECK_LIB([pthread], [pthread_setspecific], + [rra_krb4_pthread="-lpthread"])]) + AC_CHECK_LIB([krb5support], [krb5int_setspecific], + [rra_krb4_extra="-lkrb5support $rra_krb4_pthread"], + [$rra_krb4_pthread])]) + AC_CHECK_LIB([krb4], [krb_get_svc_in_tkt], + [KRB4_LIBS="-lkrb4 $rra_krb4_extra"], + [AC_MSG_ERROR([cannot find usable Kerberos v4 library])], + [$rra_krb4_extra])], + [$rra_krb4_extra]) + RRA_LIB_KRB4_RESTORE]) + +dnl Additional checks for portability that apply to either way that we find +dnl the right libraries. +AC_DEFUN([_RRA_LIB_KRB4_EXTRA], +[RRA_LIB_KRB4_SWITCH + AC_CHECK_HEADERS([kerberosIV/krb.h]) + RRA_LIB_KRB4_RESTORE]) + +dnl The main macro. +AC_DEFUN([RRA_LIB_KRB4], +[AC_REQUIRE([RRA_ENABLE_REDUCED_DEPENDS]) +rra_krb4_root= +KRB4_CPPFLAGS= +KRB4_LDFLAGS= +KRB4_LIBS= +AC_SUBST([KRB4_CPPFLAGS]) +AC_SUBST([KRB4_LDFLAGS]) +AC_SUBST([KRB4_LIBS]) +AC_ARG_WITH([krb4], + [AC_HELP_STRING([--with-krb4=DIR], + [Location of Kerberos v4 headers and libraries])], + [AS_IF([test x"$withval" != xyes && test x"$withval" != xno], + [rra_krb4_root="$withval"])]) +AS_IF([test x"$rra_reduced_depends" = xtrue], + [_RRA_LIB_KRB4_PATHS + _RRA_LIB_KRB4_REDUCED], + [AC_ARG_VAR([KRB5_CONFIG], [Path to krb5-config]) + AS_IF([test x"$rra_krb4_root" != x], + [AS_IF([test -x "${rra_krb4_root}/bin/krb5-config"], + [KRB5_CONFIG="${rra_krb4_root}/bin/krb5-config"])], + [AC_PATH_PROG([KRB5_CONFIG], [krb5-config])]) + AS_IF([test x"$KRB5_CONFIG" != x], + [AC_CACHE_CHECK([for krb4 support in krb5-config], + [rra_cv_lib_krb4_config], + [AS_IF(["$KRB5_CONFIG" | grep krb4 > /dev/null 2>&1], + [rra_cv_lib_krb4_config=yes], + [rra_cv_lib_krb4_config=no])]) + AS_IF([test "$rra_cv_lib_krb4_config" = yes], + [KRB4_CPPFLAGS=`"$KRB5_CONFIG" --cflags krb4` + KRB4_LIBS=`"$KRB5_CONFIG" --libs krb4`], + [_RRA_LIB_KRB4_PATHS + _RRA_LIB_KRB4_MANUAL]) + KRB4_CPPFLAGS=`echo "$KRB5_CPPFLAGS" | sed 's%-I/usr/include ?%%'`], + [_RRA_LIB_KRB4_PATHS + _RRA_LIB_KRB4_MANUAL])]) + _RRA_LIB_KRB4_EXTRA]) |