diff options
Diffstat (limited to 'm4/gssapi.m4')
| -rw-r--r-- | m4/gssapi.m4 | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/m4/gssapi.m4 b/m4/gssapi.m4 new file mode 100644 index 0000000..bf6acff --- /dev/null +++ b/m4/gssapi.m4 @@ -0,0 +1,136 @@ +dnl gssapi.m4 -- Find the compiler and linker flags for GSS-API. +dnl $Id$ +dnl +dnl Finds the compiler and linker flags for linking with GSS-API libraries +dnl and sets the substitution variables GSSAPI_CPPFLAGS, GSSAPI_LDFLAGS, and +dnl GSSAPI_LIBS. Provides the --with-gssapi configure option to specify a +dnl non-standard path to the GSS-API libraries. Uses krb5-config where +dnl available unless reduced dependencies is requested. +dnl +dnl Provides the macro RRA_LIB_GSSAPI and sets the substitution variables +dnl GSSAPI_CPPFLAGS, GSSAPI_LDFLAGS, and GSSAPI_LIBS. Also provides +dnl RRA_LIB_GSSAPI_SET to set CPPFLAGS, LDFLAGS, and LIBS to include the +dnl GSS-API libraries; RRA_LIB_GSSAPI_SWITCH to do the same but save the +dnl current values first; and RRA_LIB_GSSAPI_RESTORE to restore those settings +dnl to before the last RRA_LIB_GSSAPI_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 GSS-API settings. +AC_DEFUN([RRA_LIB_GSSAPI_SET], +[CPPFLAGS="$GSSAPI_CPPFLAGS $CPPFLAGS" + LDFLAGS="$GSSAPI_LDFLAGS $LDFLAGS" + LIBS="$GSSAPI_LIBS $LIBS"]) + +dnl Save the current CPPFLAGS, LDFLAGS, and LIBS settings and switch to +dnl versions that include the GSS-API flags. Used as a wrapper, with +dnl RRA_LIB_GSSAPI_RESTORE, around tests. +AC_DEFUN([RRA_LIB_GSSAPI_SWITCH], +[rra_gssapi_save_CPPFLAGS="$CPPFLAGS" + rra_gssapi_save_LDFLAGS="$LDFLAGS" + rra_gssapi_save_LIBS="$LIBS" + RRA_LIB_GSSAPI_SET]) + +dnl Restore CPPFLAGS, LDFLAGS, and LIBS to their previous values (before +dnl RRA_LIB_GSSAPI_SWITCH was called). +AC_DEFUN([RRA_LIB_GSSAPI_RESTORE], +[CPPFLAGS="$rra_gssapi_save_CPPFLAGS" + LDFLAGS="$rra_gssapi_save_LDFLAGS" + LIBS="$rra_gssapi_save_LIBS"]) + +dnl Set GSSAPI_CPPFLAGS and GSSAPI_LDFLAGS based on rra_gssapi_root. +AC_DEFUN([_RRA_LIB_GSSAPI_PATHS], +[AS_IF([test x"$rra_gssapi_root" != x], + [AS_IF([test x"$rra_gssapi_root" != x/usr], + [GSSAPI_CPPFLAGS="-I${rra_gssapi_root}/include"]) + GSSAPI_LDFLAGS="-L${rra_gssapi_root}/lib"])]) + +dnl Does the appropriate library checks for reduced-dependency GSS-API +dnl linkage. +AC_DEFUN([_RRA_LIB_GSSAPI_REDUCED], +[RRA_LIB_GSSAPI_SWITCH + AC_CHECK_LIB([gssapi_krb5], [gss_import_name], [GSSAPI_LIBS="-lgssapi_krb5"], + [AC_CHECK_LIB([gssapi], [gss_import_name], [GSSAPI_LIBS="-lgssapi"], + [AC_MSG_ERROR([cannot find usable GSS-API library])])])]) + +dnl Does the appropriate library checks for GSS-API linkage when we don't +dnl have krb5-config or reduced dependencies. +AC_DEFUN([_RRA_LIB_GSSAPI_MANUAL], +[RRA_LIB_GSSAPI_SWITCH + rra_gssapi_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 $LIBS"], , + [-lsocket])]) + AC_SEARCH_LIBS([crypt], [crypt]) + rra_gssapi_extra="$LIBS" + LIBS="$rra_gssapi_save_LIBS" + AC_CHECK_LIB([gssapi], [gss_import_name], + [GSSAPI_LIBS="-lgssapi -lkrb5 -lasn1 -lroken -lcrypto -lcom_err" + GSSAPI_LIBS="$GSSAPI_LIBS $rra_gssapi_extra"], + [AC_CHECK_LIB([krb5support], [krb5int_getspecific], + [rra_gssapi_extra="-lkrb5support $rra_gssapi_extra"], + [AC_CHECK_LIB([pthreads], [pthread_setspecific], + [rra_gssapi_pthread="-lpthreads"], + [AC_CHECK_LIB([pthread], [pthread_setspecific], + [rra_gssapi_pthread="-lpthread"])]) + AC_CHECK_LIB([krb5support], [krb5int_setspecific], + [rra_gssapi_extra="-lkrb5support $rra_gssapi_extra" + rra_gssapi_extra="$rra_gssapi_extra $rra_gssapi_pthread"], + [$rra_gssapi_pthread])]) + AC_CHECK_LIB([com_err], [error_message], + [rra_gssapi_extra="-lcom_err $rra_gssapi_extra"]) + AC_CHECK_LIB([k5crypto], [krb5int_hash_md5], + [rra_gssapi_extra="-lk5crypto $rra_gssapi_extra"]) + rra_gssapi_extra="-lkrb5 $rra_gssapi_extra" + AC_CHECK_LIB([gssapi_krb5], [gss_import_name], + [GSSAPI_LIBS="-lgssapi_krb5 $rra_gssapi_extra"], + [AC_MSG_ERROR([cannot find usable GSS-API library])], + [$rra_gssapi_extra])], + [-lkrb5 -lasn1 -lroken -lcrypto -lcom_err $rra_gssapi_extra]) + RRA_LIB_GSSAPI_RESTORE]) + +dnl The main macro. +AC_DEFUN([RRA_LIB_GSSAPI], +[AC_REQUIRE([RRA_ENABLE_REDUCED_DEPENDS]) +rra_gssapi_root= +GSSAPI_CPPFLAGS= +GSSAPI_LDFLAGS= +GSSAPI_LIBS= +AC_SUBST([GSSAPI_CPPFLAGS]) +AC_SUBST([GSSAPI_LDFLAGS]) +AC_SUBST([GSSAPI_LIBS]) +AC_ARG_WITH([gssapi], + [AC_HELP_STRING([--with-gssapi=DIR], + [Location of GSS-API headers and libraries])], + [AS_IF([test x"$withval" != xyes && test x"$withval" != xno], + [rra_gssapi_root="$withval"])]) +AS_IF([test x"$rra_reduced_depends" = xtrue], + [_RRA_LIB_GSSAPI_PATHS + _RRA_LIB_GSSAPI_REDUCED], + [AC_ARG_VAR([KRB5_CONFIG], [Path to krb5-config]) + AS_IF([test x"$rra_gssapi_root" != x], + [AS_IF([test -x "${rra_gssapi_root}/bin/krb5-config"], + [KRB5_CONFIG="${rra_gssapi_root}/bin/krb5-config"])], + [AC_PATH_PROG([KRB5_CONFIG], [krb5-config])]) + AS_IF([test x"$KRB5_CONFIG" != x], + [AC_CACHE_CHECK([for gssapi support in krb5-config], + [rra_cv_lib_gssapi_config], + [AS_IF(["$KRB5_CONFIG" | grep gssapi > /dev/null 2>&1], + [rra_cv_lib_gssapi_config=yes], + [rra_cv_lib_gssapi_config=no])]) + AS_IF([test "$rra_cv_lib_gssapi_config" = yes], + [GSSAPI_CPPFLAGS=`"$KRB5_CONFIG" --cflags gssapi` + GSSAPI_LIBS=`"$KRB5_CONFIG" --libs gssapi`], + [GSSAPI_CPPFLAGS=`"$KRB5_CONFIG" --cflags` + GSSAPI_LIBS=`"$KRB5_CONFIG" --libs`]) + GSSAPI_CPPFLAGS=`echo "$GSSAPI_CPPFLAGS" \ + | sed 's%-I/usr/include ?%%'`], + [_RRA_LIB_GSSAPI_PATHS + _RRA_LIB_GSSAPI_MANUAL])])]) |