Postgis-2.4.so konnte nicht geladen werden "undefined symbol: Float8GetDatum"

Gerade ein Upgrade auf PostgreSQL 10.1 unter Arch Linux. Ich habe eine neue neue Datenbank erstellt und versuche, Postgis zu installieren, aber es gibt folgende Fehlermeldung:

local=# create extension postgis; ERROR: could not load library "/usr/lib/postgresql/postgis-2.4.so": /usr/lib/postgresql/postgis-2.4.so: undefined symbol: Float8GetDatum 

ldd Ausgabe:

$ ldd /usr/lib/postgresql/postgis-2.4.so  linux-vdso.so.1 (0x00007ffec6f4d000) libgeos_c.so.1 => /usr/lib/libgeos_c.so.1 (0x00007f6e00788000) libproj.so.12 => /usr/lib/libproj.so.12 (0x00007f6e0051e000) libjson-c.so.2 => /usr/lib/libjson-c.so.2 (0x00007f6e00313000) libxml2.so.2 => /usr/lib/libxml2.so.2 (0x00007f6dfffad000) libm.so.6 => /usr/lib/libm.so.6 (0x00007f6dffc61000) libc.so.6 => /usr/lib/libc.so.6 (0x00007f6dff8a9000) libgeos-3.6.2.so => /usr/lib/libgeos-3.6.2.so (0x00007f6dff4fc000) libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x00007f6dff175000) libgcc_s.so.1 => /usr/lib/libgcc_s.so.1 (0x00007f6dfef5e000) libpthread.so.0 => /usr/lib/libpthread.so.0 (0x00007f6dfed40000) libdl.so.2 => /usr/lib/libdl.so.2 (0x00007f6dfeb3c000) libicuuc.so.59 => /usr/lib/libicuuc.so.59 (0x00007f6dfe78c000) libz.so.1 => /usr/lib/libz.so.1 (0x00007f6dfe575000) liblzma.so.5 => /usr/lib/liblzma.so.5 (0x00007f6dfe34f000) /usr/lib64/ld-linux-x86-64.so.2 (0x00007f6e00c6b000) libicudata.so.59 => /usr/lib/libicudata.so.59 (0x00007f6dfc83c000) 

Soweit ich es verstehe, bedeutet "undefiniertes Symbol", dass einige Bibliotheken inkompatibel sind. Ich habe jedoch keine Pakete ignoriert pacman.conf, daher bin ich mir nicht sicher, woher die Inkompatibilität kommen würde.

Edit: ld -vAusgabe:

$ ld -v /usr/lib/postgresql/postgis-2.4.so GNU ld (GNU Binutils) 2.29.1 ld: warning: cannot find entry symbol _start; not setting start address /usr/lib/postgresql/postgis-2.4.so: undefined reference to `SPI_palloc' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `WinGetPartitionLocalMemory' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `DirectFunctionCall3Coll' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `numeric_int4' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `DatumGetFloat8' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `examine_variable' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `pg_do_encoding_conversion' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `GetCurrentTransactionId' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `per_MultiFuncCall' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `Float8GetDatum' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `errhint' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `errfinish' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `datumCopy' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `SPI_modifytuple' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `get_typlenbyvalalign' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `deconstruct_array' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `get_attnum' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `WinGetFuncArgInPartition' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `SPI_fnumber' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `makeMdArrayResult' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `DirectFunctionCall1Coll' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `pg_atoi' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `get_guc_variables' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `heap_freetuple' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `init_MultiFuncCall' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `get_call_result_type' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `palloc' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `MemoryContextDelete' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `errmsg' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `WinGetFuncArgCurrent' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `pg_detoast_datum_slice' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `accumArrayResult' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `MemoryContextCreate' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `hash_search' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `TupleDescGetAttInMetadata' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `ProcessInterrupts' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `pg_qsort' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `SPI_finish' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `list_nth' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `textout' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `ReleaseSysCache' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `SPI_exec' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `WinGetCurrentPosition' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `DirectFunctionCall2Coll' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `DirectFunctionCall4Coll' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `SPI_gettype' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `SPI_connect' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `errstart' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `SPI_getbinval' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `end_MultiFuncCall' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `regclassin' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `repalloc' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `WinGetPartitionRowCount' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `BlessTupleDesc' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `CurrentMemoryContext' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `AggCheckCallContext' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `SPI_tuptable' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `DirectFunctionCall5Coll' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `get_fn_expr_argtype' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `get_attstatsslot' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `array_iterate' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `pg_detoast_datum' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `pg_detoast_datum_copy' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `default_statistics_target' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `hash_create' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `array_create_iterator' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `SPI_getvalue' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `HeapTupleHeaderGetDatum' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `GetDatabaseEncoding' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `GetNumConfigOptions' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `my_exec_path' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `heap_form_tuple' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `construct_array' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `ArrayGetNItems' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `pfree' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `SearchSysCache' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `elog_start' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `get_share_path' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `hash_any' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `get_typbyval' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `errcode' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `MemoryContextAlloc' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `palloc0' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `get_typlen' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `array_free_iterator' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `get_rel_name' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `BuildTupleFromCStrings' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `RelationNameGetTupleDesc' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `SPI_processed' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `errmsg_internal' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `vacuum_delay_point' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `pqsignal' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `free_attstatsslot' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `DefineCustomStringVariable' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `elog_finish' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `pstrdup' /usr/lib/postgresql/postgis-2.4.so: undefined reference to `InterruptPending'