FPC trunk is always compiled from clean source and installed to new directory by my custom build script. Old directory is renamed to different name with running number and revision number.
But I have discovered why these messages appear now.
FPC trunk built from r28895 contains these files:
00000013-28895-fpc_trunk\units\i386-win32\a52\libimpa52.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-base\libimpactivex.a
00000013-28895-fpc_trunk\units\i386-win32\httpd22\libimpapr.a
00000013-28895-fpc_trunk\units\i386-win32\httpd24\libimpapr24.a
00000013-28895-fpc_trunk\units\i386-win32\httpd22\libimpapriconv.a
00000013-28895-fpc_trunk\units\i386-win32\httpd22\libimpaprutil.a
00000013-28895-fpc_trunk\units\i386-win32\aspell\libimpaspell.a
00000013-28895-fpc_trunk\units\i386-win32\gtk2\libimpatk.a
00000013-28895-fpc_trunk\units\i386-win32\cairo\libimpcairo.a
00000013-28895-fpc_trunk\units\i386-win32\cairo\libimpcairoft.a
00000013-28895-fpc_trunk\units\i386-win32\cairo\libimpcairogobject.a
00000013-28895-fpc_trunk\units\i386-win32\cairo\libimpcairowin32.a
00000013-28895-fpc_trunk\units\i386-win32\opencl\libimpcl.a
00000013-28895-fpc_trunk\units\i386-win32\rtl\libimpcmem.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-base\libimpcommctrl.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-base\libimpcommdlg.a
00000013-28895-fpc_trunk\units\i386-win32\fcl-extra\libimpdaemonapp.a
00000013-28895-fpc_trunk\units\i386-win32\postgres\libimpdllist.a
00000013-28895-fpc_trunk\units\i386-win32\rtl\libimpdos.a
00000013-28895-fpc_trunk\units\i386-win32\fftw\libimpfftw_s.a
00000013-28895-fpc_trunk\units\i386-win32\rtl\libimpfpintres.a
00000013-28895-fpc_trunk\units\i386-win32\rtl\libimpfpwidestring.a
00000013-28895-fpc_trunk\units\i386-win32\fcl-image\libimpfreetypeh.a
00000013-28895-fpc_trunk\units\i386-win32\libgd\libimpgd.a
00000013-28895-fpc_trunk\units\i386-win32\gdbint\libimpgdbint.a
00000013-28895-fpc_trunk\units\i386-win32\gtk1\libimpgdk.a
00000013-28895-fpc_trunk\units\i386-win32\gtk2\libimpgdk2.a
00000013-28895-fpc_trunk\units\i386-win32\gtk2\libimpgdk2pixbuf.a
00000013-28895-fpc_trunk\units\i386-win32\gtk2\libimpgdkglext.a
00000013-28895-fpc_trunk\units\i386-win32\gtk1\libimpgdkpixbuf.a
00000013-28895-fpc_trunk\units\i386-win32\opengl\libimpgl.a
00000013-28895-fpc_trunk\units\i386-win32\opengl\libimpglext.a
00000013-28895-fpc_trunk\units\i386-win32\gtk1\libimpglib.a
00000013-28895-fpc_trunk\units\i386-win32\gtk2\libimpglib2.a
00000013-28895-fpc_trunk\units\i386-win32\gtk1\libimpgmodule.a
00000013-28895-fpc_trunk\units\i386-win32\gmp\libimpgmp.a
00000013-28895-fpc_trunk\units\i386-win32\gtk1\libimpgtk.a
00000013-28895-fpc_trunk\units\i386-win32\gtk2\libimpgtk2.a
00000013-28895-fpc_trunk\units\i386-win32\gtk1\libimpgtkglarea.a
00000013-28895-fpc_trunk\units\i386-win32\gtk2\libimpgtkglext.a
00000013-28895-fpc_trunk\units\i386-win32\rtl\libimpheaptrc.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-base\libimphtmlhelp.a
00000013-28895-fpc_trunk\units\i386-win32\httpd22\libimphttpd.a
00000013-28895-fpc_trunk\units\i386-win32\httpd24\libimphttpd24.a
00000013-28895-fpc_trunk\units\i386-win32\ibase\libimpibase40.a
00000013-28895-fpc_trunk\units\i386-win32\ibase\libimpibase60.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-base\libimpimagehlp.a
00000013-28895-fpc_trunk\units\i386-win32\imagemagick\libimpimagemagick.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-base\libimpimm.a
00000013-28895-fpc_trunk\units\i386-win32\rtl\libimpinitc.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwaaclapi.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwaaclui.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwaactiveds.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwaadshlp.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwaadsprop.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwaauthz.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwabluetoothapis.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwacryptuiapi.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwadde.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwadhcpcsdk.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwadhcpsapi.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwadsclient.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwadsgetdc.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwadsrole.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwadssec.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwaerrorrep.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwagpedit.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwahtmlhelp.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwaicmpapi.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwaimagehlp.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwaime.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwaiphlpapi.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwalmaccess.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwalmalert.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwalmapibuf.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwalmat.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwalmaudit.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwalmconfig.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwalmdfs.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwalmerrlog.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwalmjoin.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwalmmsg.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwalmremutl.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwalmrepl.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwalmserver.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwalmshare.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwalmstats.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwalmsvc.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwalmuse.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwalmwksta.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwaloadperf.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwalpmapi.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwamsi.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwamsiquery.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwamswsock.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwanative.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwanb30.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwanetsh.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwanspapi.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwantdsapi.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwantdsbcli.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwantquery.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwantsecapi.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwapatchapi.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwapatchwiz.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwapdh.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwapowrprof.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwaprsht.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwapsapi.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwarpcasync.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwarpcdce.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwarpcnsi.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwarpcssl.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwasddl.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwasecext.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwasensapi.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwasfc.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwasisbkup.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwasnmp.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwasporder.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwasrrestoreptapi.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwasspi.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwatlhelp32.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwatraffic.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwauserenv.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwauxtheme.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwawinable.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwawinbase.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwawinber.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwawincon.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwawincred.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwawincrypt.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwawindns.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwawindows.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwawinefs.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwawinfax.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwawingdi.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwawinldap.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwawinnetwk.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwawinnls.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwawinnt.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwawinreg.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwawinsafer.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwawinsock.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwawinsock2.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwawinsta.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwawinsvc.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwawinternl.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwawintype.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwawinuser.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwawinver.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwavista.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwawownt16.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwawownt32.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwawpapi.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwaws2spi.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwaws2tcpip.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-jedi\libimpjwawtsapi32.a
00000013-28895-fpc_trunk\units\i386-win32\lua\libimplauxlib.a
00000013-28895-fpc_trunk\units\i386-win32\gtk2\libimplibglade2.a
00000013-28895-fpc_trunk\units\i386-win32\lua\libimplua.a
00000013-28895-fpc_trunk\units\i386-win32\lua\libimplualib.a
00000013-28895-fpc_trunk\units\i386-win32\mad\libimpmad.a
00000013-28895-fpc_trunk\units\i386-win32\imagemagick\libimpmagick_wand.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-base\libimpmmsystem.a
00000013-28895-fpc_trunk\units\i386-win32\mysql\libimpmysql3.a
00000013-28895-fpc_trunk\units\i386-win32\mysql\libimpmysql4.a
00000013-28895-fpc_trunk\units\i386-win32\mysql\libimpmysql4_com.a
00000013-28895-fpc_trunk\units\i386-win32\mysql\libimpmysql40.a
00000013-28895-fpc_trunk\units\i386-win32\mysql\libimpmysql41.a
00000013-28895-fpc_trunk\units\i386-win32\mysql\libimpmysql50.a
00000013-28895-fpc_trunk\units\i386-win32\mysql\libimpmysql51.a
00000013-28895-fpc_trunk\units\i386-win32\mysql\libimpmysql55.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-base\libimpnb30.a
00000013-28895-fpc_trunk\units\i386-win32\numlib\libimpnumlib.a
00000013-28895-fpc_trunk\units\i386-win32\oracle\libimpoci.a
00000013-28895-fpc_trunk\units\i386-win32\odbc\libimpodbcsql.a
00000013-28895-fpc_trunk\units\i386-win32\oggvorbis\libimpogg.a
00000013-28895-fpc_trunk\units\i386-win32\openal\libimpopenal.a
00000013-28895-fpc_trunk\units\i386-win32\oracle\libimporaoci.a
00000013-28895-fpc_trunk\units\i386-win32\gtk2\libimppango.a
00000013-28895-fpc_trunk\units\i386-win32\gtk2\libimppangocairo.a
00000013-28895-fpc_trunk\units\i386-win32\pcap\libimppcap.a
00000013-28895-fpc_trunk\units\i386-win32\libpng\libimppng.a
00000013-28895-fpc_trunk\units\i386-win32\postgres\libimppostgres.a
00000013-28895-fpc_trunk\units\i386-win32\postgres\libimppostgres3.a
00000013-28895-fpc_trunk\units\i386-win32\sdl\libimpsdl.a
00000013-28895-fpc_trunk\units\i386-win32\sdl\libimpsdl_gfx.a
00000013-28895-fpc_trunk\units\i386-win32\sdl\libimpsdl_image.a
00000013-28895-fpc_trunk\units\i386-win32\sdl\libimpsdl_mixer.a
00000013-28895-fpc_trunk\units\i386-win32\sdl\libimpsdl_mixer_nosmpeg.a
00000013-28895-fpc_trunk\units\i386-win32\sdl\libimpsdl_net.a
00000013-28895-fpc_trunk\units\i386-win32\sdl\libimpsdl_ttf.a
00000013-28895-fpc_trunk\units\i386-win32\rtl\libimpsharemem.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-base\libimpshellapi.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-base\libimpshfolder.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-base\libimpshlobj.a
00000013-28895-fpc_trunk\units\i386-win32\rtl\libimpsignals.a
00000013-28895-fpc_trunk\units\i386-win32\sdl\libimpsmpeg.a
00000013-28895-fpc_trunk\units\i386-win32\sqlite\libimpsqlite.a
00000013-28895-fpc_trunk\units\i386-win32\sqlite\libimpsqlite3.a
00000013-28895-fpc_trunk\units\i386-win32\rtl\libimpsysinitcyg.a
00000013-28895-fpc_trunk\units\i386-win32\rtl\libimpsysinitgprof.a
00000013-28895-fpc_trunk\units\i386-win32\rtl\libimpsysinitpas.a
00000013-28895-fpc_trunk\units\i386-win32\rtl\libimpsystem.a
00000013-28895-fpc_trunk\units\i386-win32\rtl\libimpsysutils.a
00000013-28895-fpc_trunk\units\i386-win32\tcl\libimptcl80.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-base\libimpurlmon.a
00000013-28895-fpc_trunk\units\i386-win32\rtl-objpas\libimpvarutils.a
00000013-28895-fpc_trunk\units\i386-win32\rtl\libimpwindows.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-base\libimpwininet.a
00000013-28895-fpc_trunk\units\i386-win32\rtl-extra\libimpwinsock.a
00000013-28895-fpc_trunk\units\i386-win32\rtl-extra\libimpwinsock2.a
00000013-28895-fpc_trunk\units\i386-win32\winunits-base\libimpwinspool.a
00000013-28895-fpc_trunk\units\i386-win32\oggvorbis\libimpvorbis.a
00000013-28895-fpc_trunk\units\i386-win32\libxml2\libimpxml2.a
00000013-28895-fpc_trunk\units\i386-win32\fcl-xml\libimpxmliconv_windows.a
00000013-28895-fpc_trunk\units\i386-win32\zlib\libimpzlib.a
00000013-28895-fpc_trunk\units\i386-win32\zorba\libimpzorba.a
FPC trunk built from r29072 contains only these files:
fpc_trunk\units\i386-win32\rtl\libimpcmem.a
fpc_trunk\units\i386-win32\rtl\libimpdos.a
fpc_trunk\units\i386-win32\rtl\libimpfpintres.a
fpc_trunk\units\i386-win32\rtl\libimpfpwidestring.a
fpc_trunk\units\i386-win32\rtl\libimpheaptrc.a
fpc_trunk\units\i386-win32\rtl\libimpinitc.a
fpc_trunk\units\i386-win32\rtl\libimpsharemem.a
fpc_trunk\units\i386-win32\rtl\libimpsignals.a
fpc_trunk\units\i386-win32\rtl\libimpsysinitcyg.a
fpc_trunk\units\i386-win32\rtl\libimpsysinitgprof.a
fpc_trunk\units\i386-win32\rtl\libimpsysinitpas.a
fpc_trunk\units\i386-win32\rtl\libimpsystem.a
fpc_trunk\units\i386-win32\rtl\libimpsysutils.a
fpc_trunk\units\i386-win32\rtl\libimpwindows.a