configure: Move target source selection into configure.host

This eliminates the AM_CONDITIONAL ugliness, which eliminates
just a bit of extra boilerplate for a new target.

At the same time, properly categorize the EXTRA_DIST files
into SOURCES and HEADERS, for the generation of ctags.
diff --git a/Makefile.am b/Makefile.am
index 7766e90..dfdcea6 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -7,51 +7,13 @@
 SUBDIRS = include testsuite man
 
 EXTRA_DIST = LICENSE ChangeLog.v1 ChangeLog.libgcj			\
-	 src/aarch64/ffi.c src/aarch64/ffitarget.h src/aarch64/sysv.S	\
-	 src/alpha/ffi.c src/alpha/osf.S			\
-	 src/alpha/ffitarget.h src/arc/ffi.c src/arc/arcompact.S	\
-	 src/arc/ffitarget.h src/arm/ffi.c src/arm/sysv.S		\
-	 src/arm/ffitarget.h src/avr32/ffi.c src/avr32/sysv.S		\
-	 src/avr32/ffitarget.h src/cris/ffi.c src/cris/sysv.S		\
-	 src/cris/ffitarget.h src/ia64/ffi.c src/ia64/ffitarget.h	\
-	 src/ia64/ia64_flags.h src/ia64/unix.S src/mips/ffi.c		\
-	 src/mips/n32.S src/mips/o32.S src/metag/ffi.c			\
-	 src/metag/ffitarget.h src/metag/sysv.S src/moxie/ffi.c		\
-	 src/moxie/ffitarget.h src/moxie/eabi.S src/mips/ffitarget.h	\
-	 src/m32r/ffi.c src/m32r/sysv.S src/m32r/ffitarget.h		\
-	 src/m68k/ffi.c src/m68k/sysv.S src/m68k/ffitarget.h		\
-	 src/m88k/ffi.c src/m88k/obsd.S src/m88k/ffitarget.h		\
-	 src/microblaze/ffi.c src/microblaze/sysv.S			\
-	 src/microblaze/ffitarget.h					\
-	 src/nios2/ffi.c src/nios2/ffitarget.h src/nios2/sysv.S		\
-	 src/or1k/ffi.c src/or1k/ffitarget.h src/or1k/sysv.S		\
-	 src/powerpc/ffi.c src/powerpc/ffi_powerpc.h			\
-	 src/powerpc/ffi_sysv.c src/powerpc/ffi_linux64.c		\
-	 src/powerpc/sysv.S src/powerpc/linux64.S			\
-	 src/powerpc/linux64_closure.S src/powerpc/ppc_closure.S	\
-	 src/powerpc/asm.h src/powerpc/aix.S src/powerpc/darwin.S	\
-	 src/powerpc/aix_closure.S src/powerpc/darwin_closure.S		\
-	 src/powerpc/ffi_darwin.c src/powerpc/ffitarget.h		\
-	 src/s390/ffi.c src/s390/sysv.S src/s390/ffitarget.h		\
-	 src/sh/ffi.c src/sh/sysv.S src/sh/ffitarget.h src/sh64/ffi.c	\
-	 src/sh64/sysv.S src/sh64/ffitarget.h src/sparc/v8.S		\
-	 src/sparc/v9.S src/sparc/ffitarget.h src/sparc/ffi.c		\
-	 src/sparc/ffi64.c src/x86/darwin64.S src/x86/ffi.c src/x86/sysv.S \
-	 src/x86/darwin.S src/x86/ffiw64.c src/x86/win64.S 		\
-	 src/x86/ffi64.c src/x86/unix64.S				\
-	 src/x86/ffitarget.h src/pa/ffitarget.h src/pa/ffi.c		\
-	 src/pa/linux.S src/pa/hpux32.S src/frv/ffi.c src/bfin/ffi.c	\
-	 src/bfin/ffitarget.h src/bfin/sysv.S src/frv/eabi.S		\
-	 src/frv/ffitarget.h src/dlmalloc.c src/tile/ffi.c		\
-	 src/tile/ffitarget.h src/tile/tile.S libtool-version		\
-	 src/vax/ffi.c src/vax/ffitarget.h src/vax/elfbsd.S		\
-	 src/xtensa/ffitarget.h src/xtensa/ffi.c src/xtensa/sysv.S	\
-	 ChangeLog.libffi m4/libtool.m4 m4/lt~obsolete.m4		\
+	ChangeLog.libffi ChangeLog.libffi-3.1				\
+	m4/libtool.m4 m4/lt~obsolete.m4					\
 	 m4/ltoptions.m4 m4/ltsugar.m4 m4/ltversion.m4			\
 	 m4/ltversion.m4 src/debug.c msvcc.sh				\
-	 generate-darwin-source-and-headers.py				\
-	 libffi.xcodeproj/project.pbxproj				\
-	 libtool-ldflags ChangeLog.libffi-3.1
+	generate-darwin-source-and-headers.py				\
+	libffi.xcodeproj/project.pbxproj				\
+	libtool-ldflags
 
 info_TEXINFOS = doc/libffi.texi
 
@@ -104,134 +66,95 @@
 
 MAKEOVERRIDES=
 
+pkgconfigdir = $(libdir)/pkgconfig
+pkgconfig_DATA = libffi.pc
+
 toolexeclib_LTLIBRARIES = libffi.la
 noinst_LTLIBRARIES = libffi_convenience.la
 
 libffi_la_SOURCES = src/prep_cif.c src/types.c \
 		src/raw_api.c src/java_raw_api.c src/closures.c
 
-pkgconfigdir = $(libdir)/pkgconfig
-pkgconfig_DATA = libffi.pc
-
-nodist_libffi_la_SOURCES =
-
 if FFI_DEBUG
-nodist_libffi_la_SOURCES += src/debug.c
+libffi_la_SOURCES += src/debug.c
 endif
 
-if MIPS
-nodist_libffi_la_SOURCES += src/mips/ffi.c src/mips/o32.S src/mips/n32.S
-endif
-if BFIN
-nodist_libffi_la_SOURCES += src/bfin/ffi.c src/bfin/sysv.S
-endif
-if X86
-nodist_libffi_la_SOURCES += src/x86/ffi.c src/x86/sysv.S
-endif
-if X86_FREEBSD
-nodist_libffi_la_SOURCES += src/x86/ffi.c src/x86/sysv.S
-endif
-if X86_WIN32
-nodist_libffi_la_SOURCES += src/x86/ffi.c src/x86/sysv.S
-endif
-if X86_WIN64
-nodist_libffi_la_SOURCES += src/x86/ffiw64.c src/x86/win64.S
-endif
-if X86_DARWIN
-nodist_libffi_la_SOURCES += src/x86/ffi.c src/x86/darwin.S src/x86/ffi64.c src/x86/darwin64.S
-endif
-if SPARC
-nodist_libffi_la_SOURCES += src/sparc/ffi.c src/sparc/ffi64.c src/sparc/v8.S src/sparc/v9.S
-endif
-if ALPHA
-nodist_libffi_la_SOURCES += src/alpha/ffi.c src/alpha/osf.S
-endif
-if IA64
-nodist_libffi_la_SOURCES += src/ia64/ffi.c src/ia64/unix.S
-endif
-if M32R
-nodist_libffi_la_SOURCES += src/m32r/sysv.S src/m32r/ffi.c
-endif
-if M68K
-nodist_libffi_la_SOURCES += src/m68k/ffi.c src/m68k/sysv.S
-endif
-if M88K
-nodist_libffi_la_SOURCES += src/m88k/ffi.c src/m88k/obsd.S
-endif
-if MOXIE
-nodist_libffi_la_SOURCES += src/moxie/ffi.c src/moxie/eabi.S
-endif
-if MICROBLAZE
-nodist_libffi_la_SOURCES += src/microblaze/ffi.c src/microblaze/sysv.S
-endif
-if NIOS2
-nodist_libffi_la_SOURCES += src/nios2/sysv.S src/nios2/ffi.c
-endif
-if OR1K
-nodist_libffi_la_SOURCES += src/or1k/sysv.S src/or1k/ffi.c
-endif
-if POWERPC
-nodist_libffi_la_SOURCES += src/powerpc/ffi.c src/powerpc/ffi_sysv.c src/powerpc/ffi_linux64.c src/powerpc/sysv.S src/powerpc/ppc_closure.S src/powerpc/linux64.S src/powerpc/linux64_closure.S
-endif
-if POWERPC_AIX
-nodist_libffi_la_SOURCES += src/powerpc/ffi_darwin.c src/powerpc/aix.S src/powerpc/aix_closure.S
-endif
-if POWERPC_DARWIN
-nodist_libffi_la_SOURCES += src/powerpc/ffi_darwin.c src/powerpc/darwin.S src/powerpc/darwin_closure.S
-endif
-if POWERPC_FREEBSD
-nodist_libffi_la_SOURCES += src/powerpc/ffi.c src/powerpc/ffi_sysv.c src/powerpc/sysv.S src/powerpc/ppc_closure.S
-endif
-if AARCH64
-nodist_libffi_la_SOURCES += src/aarch64/sysv.S src/aarch64/ffi.c
-endif
-if ARC
-nodist_libffi_la_SOURCES += src/arc/arcompact.S src/arc/ffi.c
-endif
-if ARM
-nodist_libffi_la_SOURCES += src/arm/sysv.S src/arm/ffi.c
-endif
-if AVR32
-nodist_libffi_la_SOURCES += src/avr32/sysv.S src/avr32/ffi.c
-endif
-if LIBFFI_CRIS
-nodist_libffi_la_SOURCES += src/cris/sysv.S src/cris/ffi.c
-endif
-if FRV
-nodist_libffi_la_SOURCES += src/frv/eabi.S src/frv/ffi.c
-endif
-if S390
-nodist_libffi_la_SOURCES += src/s390/sysv.S src/s390/ffi.c
-endif
-if X86_64
-nodist_libffi_la_SOURCES += src/x86/ffi64.c src/x86/unix64.S src/x86/ffi.c src/x86/sysv.S
-endif
-if SH
-nodist_libffi_la_SOURCES += src/sh/sysv.S src/sh/ffi.c
-endif
-if SH64
-nodist_libffi_la_SOURCES += src/sh64/sysv.S src/sh64/ffi.c
-endif
-if PA_LINUX
-nodist_libffi_la_SOURCES += src/pa/linux.S src/pa/ffi.c
-endif
-if PA_HPUX
-nodist_libffi_la_SOURCES += src/pa/hpux32.S src/pa/ffi.c
-endif
-if TILE
-nodist_libffi_la_SOURCES += src/tile/tile.S src/tile/ffi.c
-endif
-if XTENSA
-nodist_libffi_la_SOURCES += src/xtensa/sysv.S src/xtensa/ffi.c
-endif
-if METAG
-nodist_libffi_la_SOURCES += src/metag/sysv.S src/metag/ffi.c
-endif
-if VAX
-nodist_libffi_la_SOURCES += src/vax/elfbsd.S src/vax/ffi.c
-endif
+noinst_HEADERS = \
+	src/aarch64/ffitarget.h src/aarch64/internal.h			\
+	src/alpha/ffitarget.h src/alpha/internal.h			\
+	src/arc/ffitarget.h						\
+	src/arm/ffitarget.h src/arm/internal.h				\
+	src/avr32/ffitarget.h						\
+	src/bfin/ffitarget.h						\
+	src/cris/ffitarget.h						\
+	src/frv/ffitarget.h						\
+	src/ia64/ffitarget.h src/ia64/ia64_flags.h			\
+	src/m32r/ffitarget.h						\
+	src/m68k/ffitarget.h						\
+	src/m88k/ffitarget.h						\
+	src/metag/ffitarget.h						\
+	src/microblaze/ffitarget.h					\
+	src/mips/ffitarget.h						\
+	src/moxie/ffitarget.h						\
+	src/nios2/ffitarget.h						\
+	src/or1k/ffitarget.h						\
+	src/pa/ffitarget.h						\
+	src/powerpc/ffitarget.h src/powerpc/asm.h src/powerpc/ffi_powerpc.h \
+	src/s390/ffitarget.h						\
+	src/sh/ffitarget.h						\
+	src/sh64/ffitarget.h						\
+	src/sparc/ffitarget.h src/sparc/internal.h			\
+	src/tile/ffitarget.h						\
+	src/vax/ffitarget.h						\
+	src/x86/ffitarget.h src/x86/internal.h src/x86/internal64.h	\
+	src/xtensa/ffitarget.h						\
+	src/dlmalloc.c
+
+EXTRA_libffi_la_SOURCES = \
+	src/aarch64/ffi.c src/aarch64/sysv.S				\
+	src/alpha/ffi.c src/alpha/osf.S					\
+	src/arc/ffi.c src/arc/arcompact.S				\
+	src/arm/ffi.c src/arm/sysv.S					\
+	src/avr32/ffi.c src/avr32/sysv.S				\
+	src/bfin/ffi.c src/bfin/sysv.S					\
+	src/cris/ffi.c src/cris/sysv.S					\
+	src/frv/ffi.c src/frv/eabi.S					\
+	src/ia64/ffi.c src/ia64/unix.S					\
+	src/m32r/ffi.c src/m32r/sysv.S					\
+	src/m68k/ffi.c src/m68k/sysv.S					\
+	src/m88k/ffi.c src/m88k/obsd.S					\
+	src/metag/ffi.c src/metag/sysv.S				\
+	src/microblaze/ffi.c src/microblaze/sysv.S			\
+	src/mips/ffi.c src/mips/o32.S src/mips/n32.S			\
+	src/moxie/ffi.c src/moxie/eabi.S				\
+	src/nios2/ffi.c src/nios2/sysv.S				\
+	src/or1k/ffi.c src/or1k/sysv.S					\
+	src/pa/ffi.c src/pa/linux.S src/pa/hpux32.S			\
+	src/powerpc/ffi.c src/powerpc/ffi_sysv.c src/powerpc/ffi_linux64.c \
+	 src/powerpc/sysv.S src/powerpc/linux64.S			\
+	 src/powerpc/linux64_closure.S src/powerpc/ppc_closure.S	\
+	 src/powerpc/aix.S src/powerpc/darwin.S src/powerpc/aix_closure.S \
+	 src/powerpc/darwin_closure.S src/powerpc/ffi_darwin.c		\
+	src/s390/ffi.c src/s390/sysv.S					\
+	src/sh/ffi.c src/sh/sysv.S					\
+	src/sh64/ffi.c src/sh64/sysv.S					\
+	src/sparc/ffi.c src/sparc/ffi64.c src/sparc/v8.S src/sparc/v9.S	\
+	src/tile/ffi.c src/tile/tile.S					\
+	src/vax/ffi.c src/vax/elfbsd.S					\
+	src/x86/ffi.c src/x86/sysv.S					\
+	 src/x86/ffiw64.c src/x86/win64.S 				\
+	 src/x86/ffi64.c src/x86/unix64.S				\
+	 src/x86/darwin64.S src/x86/darwin.S				\
+	src/xtensa/ffi.c src/xtensa/sysv.S
+
+TARGET_OBJ = @TARGET_OBJ@
+libffi_la_LIBADD = $(TARGET_OBJ)
+libffi_la_DEPENDENCIES = $(TARGET_OBJ)
 
 libffi_convenience_la_SOURCES = $(libffi_la_SOURCES)
+EXTRA_libffi_convenience_la_SOURCES = $(EXTRA_libffi_la_SOURCES)
+libffi_convenience_la_LIBADD = $(libffi_la_LIBADD)
+libffi_convenience_la_DEPENDENCIES = $(libffi_la_DEPENDENCIES)
 nodist_libffi_convenience_la_SOURCES = $(nodist_libffi_la_SOURCES)
 
 LTLDFLAGS = $(shell $(SHELL) $(top_srcdir)/libtool-ldflags $(LDFLAGS))