This i386-solaris 3.0.4 release of Free Pascal was generated
starting from 3.0.4 x86_64-solaris previously 
generated on a VirtualBox VM running oracle solaris 11.3.

This release was generated on an openindiana variant,
also a VirtuaxBox VM, uname -a output is:
SunOS openindiana 5.11 illumos-2727bb055f i86pc i386 i86pc

To generate a native i386 compiler,
gmake cycle CPU_TARGET=i386
starting from x86_64 compiler was failing,
due to the fact that the cross-copiler does not set
solaris as default OS target. Adding -Tsolaris to the options
allows to complete the cycle.
gmake cycle CPU_TARGET=i386 OPT="-n -Tsolaris"

In an attempt to generate IDE with GDB support,
I enabled gdbint package fo solaris, but the linking 
of the IDE with GDB failed, so that I finally generated IDE
without GDB, by using CHECKLIBGDB=no.

Enjoy and please report any troubles,

Pierre Muller 2017/12/07

Index: packages/gdbint/fpmake.pp
===================================================================
--- packages/gdbint/fpmake.pp	(revision 37699)
+++ packages/gdbint/fpmake.pp	(working copy)
@@ -167,7 +167,7 @@
     // file within the BeforeCompile event.
     P.SupportBuildModes:= [bmOneByOne];
 
-    P.OSes:=[aix,beos,haiku,freebsd,netbsd,openbsd,linux,win32,win64,go32v2,dragonfly];
+    P.OSes:=[aix,beos,haiku,freebsd,netbsd,openbsd,linux,solaris,win32,win64,go32v2,dragonfly];
 
     P.SourcePath.Add('src');
     P.IncludePath.Add('src');
Index: utils/fpcm/revision.inc
===================================================================
--- utils/fpcm/revision.inc	(revision 37699)
+++ utils/fpcm/revision.inc	(working copy)
@@ -1 +1 @@
-'2017-02-13 rev 35434'
+'2017-09-02 rev 37116'