2003-10-21 Arnaud Charlet <charlet@act-europe.fr>

	* 3psoccon.ads, 3veacodu.adb, 3vexpect.adb, 3vsoccon.ads,
	3vsocthi.adb, 3vsocthi.ads, 3vtrasym.adb, 3zsoccon.ads,
	3zsocthi.adb, 3zsocthi.ads, 50system.ads, 51system.ads,
	55system.ads, 56osinte.adb, 56osinte.ads, 56taprop.adb,
	56taspri.ads, 56tpopsp.adb, 57system.ads, 58system.ads,
	59system.ads, 5aml-tgt.adb, 5bml-tgt.adb, 5csystem.ads,
	5dsystem.ads, 5fosinte.adb, 5gml-tgt.adb, 5hml-tgt.adb,
	5isystem.ads, 5lparame.adb, 5msystem.ads, 5psystem.ads,
	5sml-tgt.adb, 5sosprim.adb, 5stpopsp.adb, 5tsystem.ads,
	5usystem.ads, 5vml-tgt.adb, 5vsymbol.adb, 5vtraent.adb,
	5vtraent.ads, 5wml-tgt.adb, 5xparame.ads, 5xsystem.ads,
	5xvxwork.ads, 5yparame.ads, 5ytiitho.adb, 5zinit.adb,
	5zml-tgt.adb, 5zparame.ads, 5ztaspri.ads, 5ztfsetr.adb,
	5zthrini.adb, 5ztiitho.adb, 5ztpopsp.adb, 7stfsetr.adb,
	7straces.adb, 7strafor.adb, 7strafor.ads, 7stratas.adb,
	a-excach.adb, a-exexda.adb, a-exexpr.adb, a-exextr.adb,
	a-exstat.adb, a-strsup.adb, a-strsup.ads, a-stwisu.adb,
	a-stwisu.ads, bld.adb, bld.ads, bld-io.adb,
	bld-io.ads, clean.adb, clean.ads, ctrl_c.c,
	erroutc.adb, erroutc.ads, errutil.adb, errutil.ads,
	err_vars.ads, final.c, g-arrspl.adb, g-arrspl.ads,
	g-boubuf.adb, g-boubuf.ads, g-boumai.ads, g-bubsor.adb,
	g-bubsor.ads, g-comver.adb, g-comver.ads, g-ctrl_c.ads,
	g-dynhta.adb, g-dynhta.ads, g-eacodu.adb, g-excact.adb,
	g-excact.ads, g-heasor.adb, g-heasor.ads, g-memdum.adb,
	g-memdum.ads, gnatclean.adb, gnatsym.adb, g-pehage.adb,
	g-pehage.ads, g-perhas.ads, gpr2make.adb, gpr2make.ads,
	gprcmd.adb, gprep.adb, gprep.ads, g-semaph.adb,
	g-semaph.ads, g-string.adb, g-string.ads, g-strspl.ads,
	g-wistsp.ads, i-vthrea.adb, i-vthrea.ads, i-vxwoio.adb,
	i-vxwoio.ads, Makefile.generic, Makefile.prolog, Makefile.rtl,
	prep.adb, prep.ads, prepcomp.adb, prepcomp.ads,
	prj-err.adb, prj-err.ads, s-boarop.ads, s-carsi8.adb,
	s-carsi8.ads, s-carun8.adb, s-carun8.ads, s-casi16.adb,
	s-casi16.ads, s-casi32.adb, s-casi32.ads, s-casi64.adb,
	s-casi64.ads, s-casuti.adb, s-casuti.ads, s-caun16.adb,
	s-caun16.ads, s-caun32.adb, s-caun32.ads, s-caun64.adb,
	s-caun64.ads, scng.adb, scng.ads, s-exnint.adb,
	s-exnllf.adb, s-exnlli.adb, s-expint.adb, s-explli.adb,
	s-geveop.adb, s-geveop.ads, s-hibaen.ads, s-htable.adb,
	s-htable.ads, sinput-c.adb, sinput-c.ads, s-memcop.ads,
	socket.c, s-purexc.ads, s-scaval.adb, s-stopoo.adb,
	s-strcom.adb, s-strcom.ads, s-strxdr.adb, s-rident.ads,
	s-thread.adb, s-thread.ads, s-tpae65.adb, s-tpae65.ads,
	s-tporft.adb, s-traent.adb, s-traent.ads, styleg.adb,
	styleg.ads, styleg-c.adb, styleg-c.ads, s-veboop.adb,
	s-veboop.ads, s-vector.ads, symbols.adb, symbols.ads,
	tb-alvms.c, tb-alvxw.c, tempdir.adb, tempdir.ads,
	vms_conv.ads, vms_conv.adb, vms_data.ads,
	vxaddr2line.adb: Files added. Merge with ACT tree.

	* 4dintnam.ads, 4mintnam.ads, 4uintnam.ads, 52system.ads,
	5dosinte.ads, 5etpopse.adb, 5mosinte.ads, 5qosinte.adb,
	5qosinte.ads, 5qstache.adb, 5qtaprop.adb, 5qtaspri.ads,
	5stpopse.adb, 5uintman.adb, 5uosinte.ads, adafinal.c,
	g-enblsp.adb, io-aux.c, scn-nlit.adb, scn-slit.adb,
	s-exnflt.ads, s-exngen.adb, s-exngen.ads, s-exnlfl.ads,
	s-exnlin.ads, s-exnsfl.ads, s-exnsin.ads, s-exnssi.ads,
	s-expflt.ads, s-expgen.adb, s-expgen.ads, s-explfl.ads,
	s-explin.ads, s-expllf.ads, s-expsfl.ads, s-expsin.ads,
	s-expssi.ads, style.adb: Files removed. Merge with ACT tree.

	* 1ic.ads, 31soccon.ads, 31soliop.ads, 3asoccon.ads,
	3bsoccon.ads, 3gsoccon.ads, 3hsoccon.ads, 3ssoccon.ads,
	3ssoliop.ads, 3wsoccon.ads, 3wsocthi.adb, 3wsocthi.ads,
	3wsoliop.ads, 41intnam.ads, 42intnam.ads, 4aintnam.ads,
	4cintnam.ads, 4gintnam.ads, 4hexcpol.adb, 4hintnam.ads,
	4lintnam.ads, 4nintnam.ads, 4ointnam.ads, 4onumaux.ads,
	4pintnam.ads, 4sintnam.ads, 4vcaldel.adb, 4vcalend.adb,
	4vintnam.ads, 4wexcpol.adb, 4wintnam.ads, 4zintnam.ads,
	51osinte.adb, 51osinte.ads, 52osinte.adb, 52osinte.ads,
	53osinte.ads, 54osinte.ads, 5aosinte.adb, 5aosinte.ads,
	5asystem.ads, 5ataprop.adb, 5atasinf.ads, 5ataspri.ads,
	5atpopsp.adb, 5avxwork.ads, 5bosinte.adb, 5bosinte.ads,
	5bsystem.ads, 5cosinte.ads, 5esystem.ads, 5fintman.adb,
	5fosinte.ads, 5fsystem.ads, 5ftaprop.adb, 5ftasinf.ads,
	5ginterr.adb, 5gintman.adb, 5gmastop.adb, 5gosinte.ads,
	5gproinf.ads, 5gsystem.ads, 5gtaprop.adb, 5gtasinf.ads,
	5gtpgetc.adb, 5hosinte.adb, 5hosinte.ads, 5hsystem.ads,
	5htaprop.adb, 5htaspri.ads, 5htraceb.adb, 5iosinte.adb,
	5itaprop.adb, 5itaspri.ads, 5ksystem.ads, 5kvxwork.ads,
	5lintman.adb, 5lml-tgt.adb, 5losinte.ads, 5lsystem.ads,
	5mvxwork.ads, 5ninmaop.adb, 5nintman.adb, 5nosinte.ads,
	5ntaprop.adb, 5ntaspri.ads, 5ointerr.adb, 5omastop.adb,
	5oosinte.adb, 5oosinte.ads, 5oosprim.adb, 5oparame.adb,
	5osystem.ads, 5otaprop.adb, 5otaspri.ads, 5posinte.ads,
	5posprim.adb, 5pvxwork.ads, 5sintman.adb, 5sosinte.adb,
	5sosinte.ads, 5ssystem.ads, 5staprop.adb, 5stasinf.ads,
	5staspri.ads, 5svxwork.ads, 5tosinte.ads, 5vasthan.adb,
	5vinmaop.adb, 5vinterr.adb, 5vintman.adb, 5vintman.ads,
	5vmastop.adb, 5vosinte.adb, 5vosinte.ads, 5vosprim.adb,
	5vsystem.ads, 5vtaprop.adb, 5vtaspri.ads, 5vtpopde.adb,
	5vtpopde.ads, 5wgloloc.adb, 5wintman.adb, 5wmemory.adb,
	5wosprim.adb, 5wsystem.ads, 5wtaprop.adb, 5wtaspri.ads,
	5ysystem.ads, 5zinterr.adb, 5zintman.adb, 5zosinte.adb,
	5zosinte.ads, 5zosprim.adb, 5zsystem.ads, 5ztaprop.adb,
	6vcpp.adb, 6vcstrea.adb, 6vinterf.ads, 7sinmaop.adb,
	7sintman.adb, 7sosinte.adb, 7sosprim.adb, 7staprop.adb,
	7staspri.ads, 7stpopsp.adb, 7straceb.adb, 9drpc.adb,
	a-caldel.adb, a-caldel.ads, a-charac.ads, a-colien.ads,
	a-comlin.adb, adaint.c, adaint.h, ada-tree.def,
	a-diocst.adb, a-diocst.ads, a-direio.adb, a-except.adb,
	a-except.ads, a-excpol.adb, a-exctra.adb, a-exctra.ads,
	a-filico.adb, a-interr.adb, a-intsig.adb, a-intsig.ads,
	ali.adb, ali.ads, ali-util.adb, ali-util.ads,
	a-ngcefu.adb, a-ngcoty.adb, a-ngelfu.adb, a-nudira.adb,
	a-nudira.ads, a-nuflra.adb, a-nuflra.ads, a-reatim.adb,
	a-reatim.ads, a-retide.ads, a-sequio.adb, a-siocst.adb,
	a-siocst.ads, a-ssicst.adb, a-ssicst.ads, a-strbou.adb,
	a-strbou.ads, a-strfix.adb, a-strmap.adb, a-strsea.ads,
	a-strunb.adb, a-strunb.ads, a-ststio.adb, a-stunau.adb,
	a-stunau.ads, a-stwibo.adb, a-stwibo.ads, a-stwifi.adb,
	a-stwima.adb, a-stwiun.adb, a-stwiun.ads, a-tags.adb,
	a-tags.ads, a-tasatt.adb, a-taside.adb, a-teioed.adb,
	a-textio.adb, a-textio.ads, a-tienau.adb, a-tifiio.adb,
	a-tiflau.adb, a-tiflio.adb, a-tigeau.adb, a-tigeau.ads,
	a-tiinau.adb, a-timoau.adb, a-tiocst.adb, a-tiocst.ads,
	atree.adb, atree.ads, a-witeio.adb, a-witeio.ads,
	a-wtcstr.adb, a-wtcstr.ads, a-wtdeio.adb, a-wtedit.adb,
	a-wtenau.adb, a-wtflau.adb, a-wtinau.adb, a-wtmoau.adb,
	bcheck.adb, binde.adb, bindgen.adb, bindusg.adb,
	checks.adb, checks.ads, cio.c, comperr.adb,
	comperr.ads, csets.adb, cstand.adb, cstreams.c,
	debug_a.adb, debug_a.ads, debug.adb, decl.c,
	einfo.adb, einfo.ads, errout.adb, errout.ads,
	eval_fat.adb, eval_fat.ads, exp_aggr.adb, expander.adb,
	expander.ads, exp_attr.adb, exp_ch11.adb, exp_ch13.adb,
	exp_ch2.adb, exp_ch3.adb, exp_ch3.ads, exp_ch4.adb,
	exp_ch5.adb, exp_ch6.adb, exp_ch7.adb, exp_ch7.ads,
	exp_ch8.adb, exp_ch9.adb, exp_code.adb, exp_dbug.adb,
	exp_dbug.ads, exp_disp.adb, exp_dist.adb, expect.c,
	exp_fixd.adb, exp_imgv.adb, exp_intr.adb, exp_pakd.adb,
	exp_prag.adb, exp_strm.adb, exp_strm.ads, exp_tss.adb,
	exp_tss.ads, exp_util.adb, exp_util.ads, exp_vfpt.adb,
	fe.h, fmap.adb, fmap.ads, fname.adb,
	fname.ads, fname-uf.adb, fname-uf.ads, freeze.adb,
	freeze.ads, frontend.adb, g-awk.adb, g-awk.ads,
	g-busora.adb, g-busora.ads, g-busorg.adb, g-busorg.ads,
	g-casuti.adb, g-casuti.ads, g-catiio.adb, g-catiio.ads,
	g-cgi.adb, g-cgi.ads, g-cgicoo.adb, g-cgicoo.ads,
	g-cgideb.adb, g-cgideb.ads, g-comlin.adb, g-comlin.ads,
	g-crc32.adb, g-crc32.ads, g-debpoo.adb, g-debpoo.ads,
	g-debuti.adb, g-debuti.ads, g-diopit.adb, g-diopit.ads,
	g-dirope.adb, g-dirope.ads, g-dyntab.adb, g-dyntab.ads,
	g-except.ads, g-exctra.adb, g-exctra.ads, g-expect.adb,
	g-expect.ads, g-hesora.adb, g-hesora.ads, g-hesorg.adb,
	g-hesorg.ads, g-htable.adb, g-htable.ads, gigi.h,
	g-io.adb, g-io.ads, g-io_aux.adb, g-io_aux.ads,
	g-locfil.adb, g-locfil.ads, g-md5.adb, g-md5.ads,
	gmem.c, gnat1drv.adb, gnatbind.adb, gnatchop.adb,
	gnatcmd.adb, gnatfind.adb, gnatkr.adb, gnatlbr.adb,
	gnatlink.adb, gnatls.adb, gnatmake.adb, gnatmem.adb,
	gnatname.adb, gnatprep.adb, gnatprep.ads, gnatpsta.adb,
	gnatxref.adb, g-os_lib.adb, g-os_lib.ads, g-regexp.adb,
	g-regexp.ads, g-regist.adb, g-regist.ads, g-regpat.adb,
	g-regpat.ads, g-soccon.ads, g-socket.adb, g-socket.ads,
	g-socthi.adb, g-socthi.ads, g-soliop.ads, g-souinf.ads,
	g-speche.adb, g-speche.ads, g-spipat.adb, g-spipat.ads,
	g-spitbo.adb, g-spitbo.ads, g-sptabo.ads, g-sptain.ads,
	g-sptavs.ads, g-table.adb, g-table.ads, g-tasloc.adb,
	g-tasloc.ads, g-thread.adb, g-thread.ads, g-traceb.adb,
	g-traceb.ads, g-trasym.adb, g-trasym.ads, hostparm.ads,
	i-c.ads, i-cobol.adb, i-cpp.adb, i-cstrea.ads,
	i-cstrin.adb, i-cstrin.ads, impunit.adb, init.c,
	inline.adb, interfac.ads, i-pacdec.ads, itypes.adb,
	itypes.ads, i-vxwork.ads, lang.opt, lang-specs.h,
	layout.adb, lib.adb, lib.ads, lib-list.adb,
	lib-load.adb, lib-load.ads, lib-sort.adb, lib-util.adb,
	lib-writ.adb, lib-writ.ads, lib-xref.adb, lib-xref.ads,
	link.c, live.adb, make.adb, make.ads,
	Makefile.adalib, Makefile.in, Make-lang.in, makeusg.adb,
	mdll.adb, mdll-fil.adb, mdll-fil.ads, mdll-utl.adb,
	mdll-utl.ads, memroot.adb, memroot.ads, memtrack.adb,
	misc.c, mkdir.c, mlib.adb, mlib.ads,
	mlib-fil.adb, mlib-fil.ads, mlib-prj.adb, mlib-prj.ads,
	mlib-tgt.adb, mlib-tgt.ads, mlib-utl.adb, mlib-utl.ads,
	namet.adb, namet.ads, namet.h, nlists.ads,
	nlists.h, nmake.adt, opt.adb, opt.ads,
	osint.adb, osint.ads, osint-b.adb, osint-c.adb,
	par.adb, par-ch10.adb, par-ch11.adb, par-ch2.adb,
	par-ch3.adb, par-ch4.adb, par-ch5.adb, par-ch6.adb,
	par-ch9.adb, par-endh.adb, par-labl.adb, par-load.adb,
	par-prag.adb, par-sync.adb, par-tchk.adb, par-util.adb,
	prj.adb, prj.ads, prj-attr.adb, prj-attr.ads,
	prj-com.adb, prj-com.ads, prj-dect.adb, prj-dect.ads,
	prj-env.adb, prj-env.ads, prj-ext.adb, prj-ext.ads,
	prj-makr.adb, prj-makr.ads, prj-nmsc.adb, prj-nmsc.ads,
	prj-pars.adb, prj-pars.ads, prj-part.adb, prj-part.ads,
	prj-pp.adb, prj-pp.ads, prj-proc.adb, prj-proc.ads,
	prj-strt.adb, prj-strt.ads, prj-tree.adb, prj-tree.ads,
	prj-util.adb, prj-util.ads, raise.c, raise.h,
	repinfo.adb, repinfo.h, restrict.adb, restrict.ads,
	rident.ads, rtsfind.adb, rtsfind.ads, s-addima.ads,
	s-arit64.adb, s-assert.adb, s-assert.ads, s-atacco.adb,
	s-atacco.ads, s-auxdec.adb, s-auxdec.ads, s-bitops.adb,
	scans.ads, scn.adb, scn.ads, s-crc32.adb,
	s-crc32.ads, s-direio.adb, sem.adb, sem.ads,
	sem_aggr.adb, sem_attr.adb, sem_attr.ads, sem_case.adb,
	sem_case.ads, sem_cat.adb, sem_cat.ads, sem_ch10.adb,
	sem_ch11.adb, sem_ch12.adb, sem_ch12.ads, sem_ch13.adb,
	sem_ch13.ads, sem_ch3.adb, sem_ch3.ads, sem_ch4.adb,
	sem_ch5.adb, sem_ch5.ads, sem_ch6.adb, sem_ch6.ads,
	sem_ch7.adb, sem_ch7.ads, sem_ch8.adb, sem_ch8.ads,
	sem_ch9.adb, sem_disp.adb, sem_disp.ads, sem_dist.adb,
	sem_elab.adb, sem_eval.adb, sem_eval.ads, sem_intr.adb,
	sem_maps.adb, sem_mech.adb, sem_prag.adb, sem_prag.ads,
	sem_res.adb, sem_res.ads, sem_type.adb, sem_type.ads,
	sem_util.adb, sem_util.ads, sem_warn.adb, s-errrep.adb,
	s-errrep.ads, s-exctab.adb, s-exctab.ads, s-exnint.ads,
	s-exnllf.ads, s-exnlli.ads, s-expint.ads, s-explli.ads,
	s-expuns.ads, s-fatflt.ads, s-fatgen.adb, s-fatgen.ads,
	s-fatlfl.ads, s-fatllf.ads, s-fatsfl.ads, s-fileio.adb,
	s-fileio.ads, s-finimp.adb, s-finimp.ads, s-finroo.adb,
	s-finroo.ads, sfn_scan.adb, s-gloloc.adb, s-gloloc.ads,
	s-imgdec.adb, s-imgenu.adb, s-imgrea.adb, s-imgwch.adb,
	sinfo.adb, sinfo.ads, s-inmaop.ads, sinput.adb,
	sinput.ads, sinput-d.adb, sinput-l.adb, sinput-l.ads,
	sinput-p.adb, sinput-p.ads, s-interr.adb, s-interr.ads,
	s-intman.ads, s-maccod.ads, s-mastop.adb, s-mastop.ads,
	s-memory.adb, s-memory.ads, snames.adb, snames.ads,
	snames.h, s-osprim.ads, s-parame.ads, s-parint.ads,
	s-pooloc.adb, s-pooloc.ads, s-poosiz.adb, sprint.adb,
	s-proinf.ads, s-scaval.ads, s-secsta.adb, s-secsta.ads,
	s-sequio.adb, s-shasto.adb, s-shasto.ads, s-soflin.ads,
	s-stache.adb, s-stache.ads, s-stalib.adb, s-stalib.ads,
	s-stoele.ads, s-stopoo.ads, s-stratt.adb, s-stratt.ads,
	s-strops.adb, s-strops.ads, s-taasde.adb, s-taasde.ads,
	s-tadeca.adb, s-tadeca.ads, s-tadert.adb, s-tadert.ads,
	s-taenca.adb, s-taenca.ads, s-taprob.adb, s-taprob.ads,
	s-taprop.ads, s-tarest.adb, s-tarest.ads, s-tasdeb.adb,
	s-tasdeb.ads, s-tasinf.adb, s-tasinf.ads, s-tasini.adb,
	s-tasini.ads, s-taskin.adb, s-taskin.ads, s-tasque.adb,
	s-tasque.ads, s-tasren.adb, s-tasren.ads, s-tasres.ads,
	s-tassta.adb, s-tassta.ads, s-tasuti.adb, s-tasuti.ads,
	s-tataat.adb, s-tataat.ads, s-tpinop.adb, s-tpinop.ads,
	s-tpoben.adb, s-tpoben.ads, s-tpobop.adb, s-tpobop.ads,
	s-tposen.adb, s-tposen.ads, s-traceb.adb, s-traceb.ads,
	stringt.adb, stringt.ads, stringt.h, style.ads,
	stylesw.adb, stylesw.ads, s-unstyp.ads, s-vaflop.ads,
	s-valrea.adb, s-valuti.adb, s-vercon.adb, s-vmexta.adb,
	s-wchcnv.ads, s-wchcon.ads, s-widcha.adb, switch.adb,
	switch.ads, switch-b.adb, switch-c.adb, switch-m.adb,
	s-wwdcha.adb, s-wwdwch.adb, sysdep.c, system.ads,
	table.adb, table.ads, targparm.adb, targparm.ads,
	targtyps.c, tbuild.adb, tbuild.ads, tracebak.c,
	trans.c, tree_io.adb, treepr.adb, treeprs.adt,
	ttypes.ads, types.ads, types.h, uintp.adb,
	uintp.ads, uintp.h, uname.adb, urealp.adb,
	urealp.ads, urealp.h, usage.adb, utils2.c,
	utils.c, validsw.adb, validsw.ads, widechar.adb,
	xeinfo.adb, xnmake.adb, xref_lib.adb, xref_lib.ads,
	xr_tabls.adb, xr_tabls.ads, xtreeprs.adb, xsnames.adb,
	einfo.h, sinfo.h, treeprs.ads, nmake.ads, nmake.adb,
	gnatvsn.ads: Merge with ACT tree.

	* gnatvsn.adb: Rewritten in a simpler and more efficient way.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@72751 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 168 insertions, 126 deletions

diff --git a/gcc/ada/frontend.adb b/gcc/ada/frontend.adb
index 758513eb180..f4f36f56aaf 100644
--- a/gcc/ada/frontend.adb
+++ b/gcc/ada/frontend.adb
@@ -6,7 +6,7 @@
 --                                                                          --
 --                                 B o d y                                  --
 --                                                                          --
---          Copyright (C) 1992-2002 Free Software Foundation, Inc.          --
+--          Copyright (C) 1992-2003 Free Software Foundation, Inc.          --
 --                                                                          --
 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
 -- terms of the  GNU General Public License as published  by the Free Soft- --
@@ -24,6 +24,8 @@
 --                                                                          --
 ------------------------------------------------------------------------------
 
+with GNAT.Strings; use GNAT.Strings;
+
 with Atree;    use Atree;
 with Checks;
 with CStand;
@@ -44,6 +46,7 @@ with Opt;      use Opt;
 with Osint;
 with Output;   use Output;
 with Par;
+with Prepcomp;
 with Rtsfind;
 with Sprint;
 with Scn;      use Scn;
@@ -55,14 +58,12 @@ with Sem_Warn; use Sem_Warn;
 with Sinfo;    use Sinfo;
 with Sinput;   use Sinput;
 with Sinput.L; use Sinput.L;
+with Tbuild;   use Tbuild;
 with Types;    use Types;
 
 procedure Frontend is
-      Pragmas : List_Id;
-      Prag    : Node_Id;
-
-      Save_Style_Check : constant Boolean := Opt.Style_Check;
-      --  Save style check mode so it can be restored later
+      Config_Pragmas : List_Id;
+      --  Gather configuration pragmas
 
 begin
    --  Carry out package initializations. These are initializations which
@@ -86,102 +87,115 @@ begin
 
    CStand.Create_Standard;
 
-   --  Read and process gnat.adc file if one is present
+   --  Check possible symbol definitions specified by -gnateD switches
 
-   if Opt.Config_File then
+   Prepcomp.Process_Command_Line_Symbol_Definitions;
 
-      --  We always analyze the gnat.adc file with style checks off,
-      --  since we don't want a miscellaneous gnat.adc that is around
-      --  to discombobulate intended -gnatg compilations.
+   --  If -gnatep= was specified, parse the preprocessing data file
 
-      Opt.Style_Check := False;
+   if Preprocessing_Data_File /= null then
+      Name_Len := Preprocessing_Data_File'Length;
+      Name_Buffer (1 .. Name_Len) := Preprocessing_Data_File.all;
+      Prepcomp.Parse_Preprocessing_Data_File (Name_Find);
 
-      --  Capture current suppress options, which may get modified
+   --  Otherwise, check if there were preprocessing symbols on the command
+   --  line and set preprocessing if there are.
 
-      Scope_Suppress := Opt.Suppress_Options;
+   else
+      Prepcomp.Check_Symbols;
+   end if;
 
-      Name_Buffer (1 .. 8) := "gnat.adc";
-      Name_Len := 8;
-      Source_gnat_adc := Load_Config_File (Name_Enter);
+   --  Now that the preprocessing situation is established, we are able to
+   --  load the main source (this is no longer done by Lib.Load.Initalize).
 
-      if Source_gnat_adc /= No_Source_File then
-         Initialize_Scanner (No_Unit, Source_gnat_adc);
-         Pragmas := Par (Configuration_Pragmas => True);
+   Lib.Load.Load_Main_Source;
 
-         if Pragmas /= Error_List
-           and then Operating_Mode /= Check_Syntax
-         then
-            Prag := First (Pragmas);
-            while Present (Prag) loop
-               Analyze_Pragma (Prag);
-               Next (Prag);
-            end loop;
-         end if;
-      end if;
+   --  Read and process configuration pragma files if present
 
-      --  Restore style check, but if gnat.adc turned on checks, leave on!
+   declare
+      Save_Style_Check : constant Boolean := Opt.Style_Check;
+      --  Save style check mode so it can be restored later
 
-      Opt.Style_Check := Save_Style_Check or Style_Check;
+      Source_Config_File : Source_File_Index;
+      --  Source reference for -gnatec configuration file
 
-      --  Capture any modifications to suppress options from config pragmas
+      Prag : Node_Id;
 
-      Opt.Suppress_Options := Scope_Suppress;
-   end if;
+   begin
+      --  We always analyze config files with style checks off, since
+      --  we don't want a miscellaneous gnat.adc that is around to
+      --  discombobulate intended -gnatg or -gnaty compilations.
 
-   --  Read and process the configuration pragmas file if one is present
+      Opt.Style_Check := False;
+      Style_Check := False;
 
-   if Config_File_Name /= null then
+      --  Capture current suppress options, which may get modified
 
-      declare
-         New_Pragmas        : List_Id;
-         Style_Check_Saved  : constant Boolean  := Opt.Style_Check;
-         Source_Config_File : Source_File_Index := No_Source_File;
+      Scope_Suppress := Opt.Suppress_Options;
 
-      begin
-         --  We always analyze the config pragmas file with style checks off,
-         --  since we don't want it to discombobulate intended
-         --  -gnatg compilations.
+      --  First deal with gnat.adc file
+
+      if Opt.Config_File then
+         Name_Buffer (1 .. 8) := "gnat.adc";
+         Name_Len := 8;
+         Source_gnat_adc := Load_Config_File (Name_Enter);
+
+         if Source_gnat_adc /= No_Source_File then
+            Initialize_Scanner (No_Unit, Source_gnat_adc);
+            Config_Pragmas := Par (Configuration_Pragmas => True);
+
+         else
+            Config_Pragmas := Empty_List;
+         end if;
 
-         Opt.Style_Check := False;
+      else
+         Config_Pragmas := Empty_List;
+      end if;
 
-         --  Capture current suppress options, which may get modified
+      --  Now deal with specified config pragmas files if there are any
 
-         Scope_Suppress := Opt.Suppress_Options;
+      if Opt.Config_File_Names /= null then
+         for Index in Opt.Config_File_Names'Range loop
+            Name_Len := Config_File_Names (Index)'Length;
+            Name_Buffer (1 .. Name_Len) := Config_File_Names (Index).all;
+            Source_Config_File := Load_Config_File (Name_Enter);
 
-         Name_Buffer (1 .. Config_File_Name'Length) := Config_File_Name.all;
-         Name_Len := Config_File_Name'Length;
-         Source_Config_File := Load_Config_File (Name_Enter);
+            if Source_Config_File = No_Source_File then
+               Osint.Fail
+                 ("cannot find configuration pragmas file ",
+                  Config_File_Names (Index).all);
+            end if;
 
-         if Source_Config_File = No_Source_File then
-            Osint.Fail
-              ("cannot find configuration pragmas file ",
-               Config_File_Name.all);
-         end if;
+            Initialize_Scanner (No_Unit, Source_Config_File);
+            Append_List_To
+              (Config_Pragmas, Par (Configuration_Pragmas => True));
+         end loop;
+      end if;
 
-         Initialize_Scanner (No_Unit, Source_Config_File);
-         New_Pragmas := Par (Configuration_Pragmas => True);
+      --  Now analyze all pragmas except those whose analysis must be
+      --  deferred till after the main unit is analyzed.
 
-         if New_Pragmas /= Error_List
-           and then Operating_Mode /= Check_Syntax
-         then
-            Prag := First (New_Pragmas);
-            while Present (Prag) loop
+      if Config_Pragmas /= Error_List
+        and then Operating_Mode /= Check_Syntax
+      then
+         Prag := First (Config_Pragmas);
+         while Present (Prag) loop
+            if not Delay_Config_Pragma_Analyze (Prag) then
                Analyze_Pragma (Prag);
-               Next (Prag);
-            end loop;
-         end if;
+            end if;
 
-         --  Restore style check, but if the config pragmas file
-         --  turned on checks, leave on!
+            Next (Prag);
+         end loop;
+      end if;
 
-         Opt.Style_Check := Style_Check_Saved or Style_Check;
+      --  Restore style check, but if config file turned on checks, leave on!
 
-         --  Capture any modifications to suppress options from config pragmas
+      Opt.Style_Check := Save_Style_Check or Style_Check;
 
-         Opt.Suppress_Options := Scope_Suppress;
-      end;
+      --  Capture any modifications to suppress options from config pragmas
 
-   end if;
+      Opt.Suppress_Options := Scope_Suppress;
+   end;
 
    --  If there was a -gnatem switch, initialize the mappings of unit names to
    --  file names and of file names to path names from the mapping file.
@@ -228,90 +242,117 @@ begin
    --  the check syntax mode, but in that case we won't go on to the
    --  semantics in any case).
 
-   declare
-      Discard : List_Id;
-
-   begin
-      Discard := Par (Configuration_Pragmas => False);
-   end;
+   Discard_List (Par (Configuration_Pragmas => False));
 
    --  The main unit is now loaded, and subunits of it can be loaded,
    --  without reporting spurious loading circularities.
 
    Set_Loading (Main_Unit, False);
 
-   --  Now on to the semantics. We skip the semantics if we are in syntax
-   --  only mode, or if we encountered a fatal error during the parsing.
+   --  Now that the main unit is installed, we can complete the analysis
+   --  of the pragmas in gnat.adc and the configuration file, that require
+   --  a context for their semantic processing.
 
-   if Operating_Mode /= Check_Syntax
-     and then not Fatal_Error (Main_Unit)
+   if Config_Pragmas /= Error_List
+     and then Operating_Mode /= Check_Syntax
    then
-      --  Reset Operating_Mode to Check_Semantics for subunits. We cannot
-      --  actually generate code for subunits, so we suppress expansion.
-      --  This also corrects certain problems that occur if we try to
-      --  incorporate subunits at a lower level.
+      --  Pragmas that require some semantic activity, such as
+      --  Interrupt_State, cannot be processed until the main unit
+      --  is installed, because they require a compilation unit on
+      --  which to attach with_clauses, etc. So analyze them now.
 
-      if Operating_Mode = Generate_Code
-         and then Nkind (Unit (Cunit (Main_Unit))) = N_Subunit
-      then
-         Operating_Mode := Check_Semantics;
-      end if;
+      declare
+         Prag : Node_Id;
 
-      --  Analyze (and possibly expand) main unit
+      begin
+         Prag := First (Config_Pragmas);
+         while Present (Prag) loop
+            if Delay_Config_Pragma_Analyze (Prag) then
+               Analyze_Pragma (Prag);
+            end if;
 
-      Scope_Suppress := Suppress_Options;
-      Semantics (Cunit (Main_Unit));
+            Next (Prag);
+         end loop;
+      end;
+   end if;
 
-      --  Cleanup processing after completing main analysis
+   --  Now on to the semantics. Skip if in syntax only mode
 
-      if Operating_Mode = Generate_Code
-         or else (Operating_Mode = Check_Semantics
-                   and then Tree_Output)
-      then
-         Instantiate_Bodies;
-      end if;
+   if Operating_Mode /= Check_Syntax then
 
-      if Operating_Mode = Generate_Code then
+      --  Install the configuration pragmas in the tree
+
+      Set_Config_Pragmas (Aux_Decls_Node (Cunit (Main_Unit)), Config_Pragmas);
+
+      --  Following steps are skipped if we had a fatal error during parsing
+
+      if not Fatal_Error (Main_Unit) then
 
-         if Inline_Processing_Required then
-            Analyze_Inlined_Bodies;
+         --  Reset Operating_Mode to Check_Semantics for subunits. We cannot
+         --  actually generate code for subunits, so we suppress expansion.
+         --  This also corrects certain problems that occur if we try to
+         --  incorporate subunits at a lower level.
+
+         if Operating_Mode = Generate_Code
+            and then Nkind (Unit (Cunit (Main_Unit))) = N_Subunit
+         then
+            Operating_Mode := Check_Semantics;
          end if;
 
-         --  Remove entities from program that do not have any
-         --  execution time references.
+         --  Analyze (and possibly expand) main unit
+
+         Scope_Suppress := Suppress_Options;
+         Semantics (Cunit (Main_Unit));
+
+         --  Cleanup processing after completing main analysis
 
-         if Debug_Flag_UU then
-            Collect_Garbage_Entities;
+         if Operating_Mode = Generate_Code
+            or else (Operating_Mode = Check_Semantics
+                      and then ASIS_Mode)
+         then
+            Instantiate_Bodies;
          end if;
 
-         Check_Elab_Calls;
+         if Operating_Mode = Generate_Code then
+            if Inline_Processing_Required then
+               Analyze_Inlined_Bodies;
+            end if;
 
-         --  Build unit exception table. We leave this up to the end to
-         --  make sure that all the necessary information is at hand.
+            --  Remove entities from program that do not have any
+            --  execution time references.
 
-         Exp_Ch11.Generate_Unit_Exception_Table;
-      end if;
+            if Debug_Flag_UU then
+               Collect_Garbage_Entities;
+            end if;
 
-      --  List library units if requested
+            Check_Elab_Calls;
 
-      if List_Units then
-         Lib.List;
-      end if;
+            --  Build unit exception table. We leave this up to the end to
+            --  make sure that all the necessary information is at hand.
+
+            Exp_Ch11.Generate_Unit_Exception_Table;
+         end if;
 
-      --  Output any messages for unreferenced entities
+         --  List library units if requested
 
-      Output_Unreferenced_Messages;
-      Sem_Warn.Check_Unused_Withs;
+         if List_Units then
+            Lib.List;
+         end if;
+
+         --  Output any messages for unreferenced entities
+
+         Output_Unreferenced_Messages;
+         Sem_Warn.Check_Unused_Withs;
+      end if;
    end if;
 
    --  Qualify all entity names in inner packages, package bodies, etc.,
    --  except when compiling for the JVM back end, which depends on
-   --  having unqualified names in certain cases and handles the generation
-   --  of qualified names when needed.
+   --  having unqualified names in certain cases and handles the
+   --  generation of qualified names when needed.
 
    if not Java_VM then
       Exp_Dbug.Qualify_All_Entity_Names;
-      Exp_Dbug.Generate_Auxiliary_Types;
    end if;
 
    --  Dump the source now. Note that we do this as soon as the analysis
@@ -320,11 +361,12 @@ begin
 
    Sprint.Source_Dump;
 
-   --  If a mapping file has been specified by a -gnatem switch,
-   --  update it if there has been some sourcs that were not in the mappings.
+   --  If a mapping file has been specified by a -gnatem switch, update
+   --  it if there has been some sourcs that were not in the mappings.
 
    if Mapping_File_Name /= null then
       Fmap.Update_Mapping_File (Mapping_File_Name.all);
    end if;
 
+   return;
 end Frontend;