54 lines
1.7 KiB
Plaintext
54 lines
1.7 KiB
Plaintext
dnl ######################################################################
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dnl check if a filesystem exists (if any of its header files exist).
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dnl Usage: AC_CHECK_FS_HEADERS(<headers>..., <fs>, [<fssymbol>])
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dnl Check if any of the headers <headers> exist. If any exist, then
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dnl define HAVE_FS_<fs>. If <fssymbol> exits, then define
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dnl HAVE_FS_<fssymbol> instead...
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AC_DEFUN([AMU_CHECK_FS_HEADERS],
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[
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# find what name to give to the fs
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if test -n "$3"
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then
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ac_fs_name=$3
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else
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ac_fs_name=$2
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fi
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# store variable name of fs
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ac_upcase_fs_name=`echo $2 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
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ac_fs_headers_safe=HAVE_FS_$ac_upcase_fs_name
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# check for cache and set it if needed
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AMU_CACHE_CHECK_DYNAMIC(for $ac_fs_name filesystem in <$1>,
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ac_cv_fs_header_$ac_fs_name,
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[
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# define to "no" by default
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eval "ac_cv_fs_header_$ac_fs_name=no"
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# and look to see if it was found
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AC_CHECK_HEADERS($1,
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[ eval "ac_cv_fs_header_$ac_fs_name=yes"
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break
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])])
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# check if need to define variable
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if test "`eval echo '$''{ac_cv_fs_header_'$ac_fs_name'}'`" = yes
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then
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AC_DEFINE_UNQUOTED($ac_fs_headers_safe)
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# append ops_<fs>.o object to AMD_FS_OBJS for automatic compilation
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# if first time we add something to this list, then also tell autoconf
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# to replace instances of it in Makefiles.
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if test -z "$AMD_FS_OBJS"
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then
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AMD_FS_OBJS="ops_${ac_fs_name}.o"
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AC_SUBST(AMD_FS_OBJS)
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else
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# since this object file could have already been added before
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# we need to ensure we do not add it twice.
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case "${AMD_FS_OBJS}" in
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*ops_${ac_fs_name}.o* ) ;;
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* )
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AMD_FS_OBJS="$AMD_FS_OBJS ops_${ac_fs_name}.o"
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;;
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esac
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fi
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fi
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])
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dnl ======================================================================
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