arm config fix from Richard Earnshaw
[deliverable/binutils-gdb.git] / gas / configure.in
index 29094f83423a0b11e0650b3241160b1160740cc0..3f4362d1485d42c16e4f6f264da3a56483bfc7eb 100644 (file)
@@ -3,12 +3,10 @@ dnl
 dnl And be careful when changing it!  If you must add tests with square
 dnl brackets, be sure changequote invocations surround it.
 dnl
-dnl Remember to use "dnl" in each line before the AC_INIT call...
 dnl
+AC_PREREQ(2.3)dnl We only need 2.0, but pre-2.3 loses on some AIX version.
+AC_INIT(as.h)dnl
 dnl
-AC_INIT(as.h)
-dnl
-bfd_gas=no
 user_bfd_gas=
 AC_ARG_ENABLE(bfd-assembler,
 [    bfd-assembler     use BFD back end for writing object files],
@@ -17,6 +15,14 @@ AC_ARG_ENABLE(bfd-assembler,
   no)  user_bfd_gas=no ;;
   *)   AC_MSG_ERROR(bad value ${enableval} given for bfd-assembler option) ;;
 esac])dnl
+AC_ARG_ENABLE(targets,
+[    targets            alternative target configurations besides the primary],
+[case "${enableval}" in
+  yes | "") AC_ERROR(enable-targets option must specify target names or 'all')
+           ;;
+  no)      enable_targets= ;;
+  *)       enable_targets=$enableval ;;
+esac])dnl
 
 # Generate a header file -- gets more post-processing by Makefile later.
 AC_CONFIG_HEADER(conf)
@@ -24,14 +30,16 @@ AC_CONFIG_HEADER(conf)
 dnl For recursion to work right, this must be an absolute pathname.
 AC_CONFIG_AUX_DIR(`cd $srcdir;pwd`/..)
 AC_CANONICAL_SYSTEM
-AC_PROGRAM_TRANSFORM_NAME
+AC_ARG_PROGRAM
 
-emulation=generic
+te_file=generic
 
 # assign cpu type
 
 # check for architecture variants
 case ${target_cpu} in
+  armeb)       cpu_type=arm endian=big ;;
+  arm*)                cpu_tpye=arm endian=little ;;
   hppa*)       cpu_type=hppa ;;
 changequote(,)dnl
   i[45]86)     cpu_type=i386 ;;
@@ -42,9 +50,11 @@ changequote([,])dnl
   m8*)         cpu_type=m88k ;;
   mips*el)     cpu_type=mips endian=little;;
   mips*)       cpu_type=mips endian=big ;;
-  powerpc*)    cpu_type=ppc ;;
+  powerpcle*)  cpu_type=ppc endian=little ;;
+  powerpc*)    cpu_type=ppc endian=big ;;
   rs6000*)     cpu_type=ppc ;;
-  sparc64)     cpu_type=sparc obj_format=elf AC_DEFINE(sparcv9) ;;
+  sparc64)     cpu_type=sparc obj_format=elf
+               AC_DEFINE(sparcv9) ;;
   sparclite*)   cpu_type=sparc ;;
   *)           cpu_type=${target_cpu} ;;
 esac
@@ -60,136 +70,280 @@ esac
 AC_SUBST(OPCODES_LIB)
 
 gas_target=${cpu_type}
-generic_target=${cpu_type}-${target_vendor}-${target_os}
-dev=no
-
-# assign object format
-case ${generic_target} in
-  a29k-amd-udi)                obj_format=coff gas_target=ebmon29k ;;
-  a29k-amd-ebmon)      obj_format=coff gas_target=ebmon29k ;;
-
-  alpha-*-netware*)    obj_format=ecoff ;;
-  alpha-*-osf*)                obj_format=ecoff ;;
-
-  arm-*-riscix*)       obj_format=aout bfd_gas=yes ;;
-
-  hppa-*-*elf*)                obj_format=elf emulation=hppa ;;
-  hppa-*-osf*)         obj_format=som emulation=hppa ;;
-  hppa-*-hpux*)                obj_format=som emulation=hppa ;;
-  hppa-*-bsd*)         obj_format=som emulation=hppa ;;
-  hppa-*-hiux*)                obj_format=som emulation=hppa ;;
-
-  h8300-*-coff)                obj_format=coff ;;
-
-  i386-ibm-aix*)       obj_format=coff gas_target=i386coff
-                        emulation=i386aix ;;
-  i386-*-bsd*)         obj_format=aout emulation=386bsd ;;
-  i386-*-netbsd0.8)    obj_format=aout emulation=386bsd ;;
-  i386-*-netbsd*)      obj_format=aout emulation=netbsd ;;
-  i386-*-linux*elf*)   obj_format=elf  emulation=linux ;;
-  i386-*-linux*coff*)  obj_format=coff emulation=linux
-                        gas_target=i386coff ;;
-  i386-*-linux*)       obj_format=aout emulation=linux bfd_gas=preferred ;;
-  i386-*-lynxos*)      obj_format=coff gas_target=i386coff
-                        emulation=lynx ;;
-  i386-*-sysv4* | i386-*-solaris* | i386-*-elf)
-                       obj_format=elf ;;
-  i386-*-coff | i386-*-sysv* | i386-*-sco* | i386-*-isc*)
-                       obj_format=coff gas_target=i386coff ;;
-  i386-*-vsta)         obj_format=aout ;;
-  i386-*-go32)         obj_format=coff gas_target=i386coff ;;
-  i386-*-mach* | i386-*-gnu*)
-                       obj_format=aout emulation=mach bfd_gas=yes ;;
-
-  i960-*-bout)         obj_format=bout ;;
-  i960-*-coff)         obj_format=coff emulation=ic960 gas_target=ic960coff ;;
-  i960-*-nindy*)       obj_format=bout ;;
-  i960-*-vxworks4*)    obj_format=bout ;;
-  i960-*-vxworks5.0)   obj_format=bout ;;
-  i960-*-vxworks5.*)   obj_format=coff emulation=ic960 gas_target=ic960coff ;;
-  i960-*-vxworks*)     obj_format=bout ;;
-
-  m68k-wrs-vxworks | m68k-ericsson-ose | m68k-*-sunos*)
-                       obj_format=aout emulation=sun3 ;;
-  m68k-motorola-sysv)  obj_format=coff gas_target=m68kcoff emulation=delta ;;
-  m68k-bull-sysv3*)    obj_format=coff gas_target=m68kcoff emulation=dpx2 ;;
-  m68k-apollo-*)       obj_format=coff gas_target=apollo emulation=apollo ;;
-  m68k-*-coff | m68k-*-sysv*)
-                       obj_format=coff gas_target=m68kcoff ;;
-  m68k-*-hpux)         obj_format=hp300 emulation=hp300 ;;
-  m68k-*-lynxos*)      obj_format=coff gas_target=m68kcoff
-                        emulation=lynx ;;
-
-  m88k-*-coff*)                obj_format=coff gas_target=m88kcoff ;;
-
-  # don't change emulation like *-*-bsd does
-  mips-*-bsd*)         bfd_gas=yes obj_format=aout gas_target=mips-lit ;;
-  mips-*-ultrix*)      obj_format=ecoff gas_target=mips-lit ;;
-  mips-*-ecoff*)       obj_format=ecoff 
-                       case "$endian" in
-                       big) gas_target=mips-big ;;
-                       *)   gas_target=mips-lit ;;
-                       esac
-                       ;;
-  mips-*-ecoff*)       obj_format=ecoff gas_target=mips-big ;;
-  mips-*-irix5*)       obj_format=elf gas_target=mips-big ;;
-  mips-*-irix*)                obj_format=ecoff gas_target=mips-big ;;
-  mips-*-riscos*)      obj_format=ecoff gas_target=mips-big ;;
-  mips-*-sysv*)                obj_format=ecoff gas_target=mips-big ;;
-  mips-*-elf*)         obj_format=elf 
-                       case "$endian" in
-                       big) gas_target=mips-big ;;
-                       *)   gas_target=mips-lit ;;
-                       esac
-                       ;;
-  ppc-*-aix*)          obj_format=coff bfd_gas=yes ;;
-  ppc-*-elf*)          obj_format=elf bfd_gas=yes ;;
-  ppc-*-netware*)      obj_format=elf emulation=ppcnw ;;
-  ppc-*-sysv4*)                obj_format=elf bfd_gas=yes ;;
-
-  sh-*-coff)           obj_format=coff ;;
-
-  ns32k-pc532-mach*)   obj_format=aout emulation=pc532 bfd_gas=yes ;;
-  ns32k-pc532-netbsd*) obj_format=aout emulation=netbsd532 bfd_gas=yes ;;
-
-  sparc*-*-sunos4*)    obj_format=aout emulation=sun3 bfd_gas=yes ;;
-  sparc*-*-aout | sparc*-*-vxworks)
-                       obj_format=aout bfd_gas=yes ;;
-  sparc*-*-coff)       obj_format=coff bfd_gas=yes ;;
-  sparc*-*-lynxos*)    obj_format=coff bfd_gas=yes emulation=lynx ;;
-  sparc*-fujitsu-none) obj_format=aout bfd_gas=yes ;;
-  sparc*-*-elf | sparc*-*-solaris*)
-                       obj_format=elf ;;
-
-  vax-*-bsd* | vax-*-ultrix*)
-                       obj_format=aout ;;
-  vax-*-vms)           obj_format=vms ;;
-
-  z8k-*-coff | z8k-*-sim)
-                       obj_format=coff ;;
-
-  *-*-aout | *-*-scout)
-                       obj_format=aout ;;
-  *-*-nindy*)
-                       obj_format=bout ;;
-  *-*-bsd*)
-                       obj_format=aout emulation=sun3 ;;
-  *-*-generic)         obj_format=generic ;;
-  *-*-xray | *-*-hms)  obj_format=coff ;;
-  *-*-sim)             obj_format=coff ;;
-  *-*-elf | *-*-sysv4* | *-*-solaris*)
-                       AC_MSG_WARN(GAS support for ELF format is incomplete)
-                       obj_format=elf dev=yes ;;
-  *-*-vxworks)         obj_format=aout ;;
-  *-*-netware)         obj_format=elf ;;
-esac
+this_target=${generic_target}
+
+canon_targets=""
+if test -n "$enable_targets" ; then
+  for t in `echo $enable_targets | sed 's/,/ /g'`; do
+    result=`$ac_config_sub $t 2>/dev/null`
+    if test -n "$result" ; then
+      canon_targets="$canon_targets $result"
+#    else
+#      # Permit "all", etc.  We don't support it yet though.
+#      canon_targets="$canon_targets $t"
+    fi
+  done
+  GAS_UNIQ(canon_targets)
+fi
+
+emulations=""
+
+for this_target in $target $canon_targets ; do
+
+    eval `echo $this_target | sed 's/^\(.*\)-\(.*\)-\(.*\)$/cpu=\1 vendor=\2 os=\3/'`
+
+    # check for architecture variants
+    case ${cpu} in
+      hppa*)           cpu_type=hppa ;;
+changequote(,)dnl
+      i[45]86)         cpu_type=i386 ;;
+      m680[012346]0)   cpu_type=m68k ;;
+      m68008)          cpu_type=m68k ;;
+      m683??)          cpu_type=m68k ;;
+changequote([,])dnl
+      m8*)             cpu_type=m88k ;;
+      mips*el)         cpu_type=mips endian=little;;
+      mips*)           cpu_type=mips endian=big ;;
+      powerpcle*)      cpu_type=ppc endian=little ;;
+      powerpc*)                cpu_type=ppc endian=big ;;
+      rs6000*)         cpu_type=ppc ;;
+      sparc64)         cpu_type=sparc obj_format=elf want_sparcv9=true ;;
+      sparclite*)      cpu_type=sparc ;;
+      *)               cpu_type=${target_cpu} ;;
+    esac
+
+    if test ${this_target} = $target ; then
+      target_cpu_type=${cpu_type}
+    elif test ${target_cpu_type} != ${cpu_type} ; then
+      continue
+    fi
+
+    targ=${cpu_type}
+    generic_target=${cpu_type}-$vendor-$os
+    dev=no
+    bfd_gas=no
+    em=generic
+
+    # assign object format
+    case ${generic_target} in
+      a29k-amd-udi)         fmt=coff targ=ebmon29k ;;
+      a29k-amd-ebmon)       fmt=coff targ=ebmon29k ;;
+      a29k-*-vxworks*)      fmt=coff ;;
+
+      alpha-*-netware*)     fmt=ecoff ;;
+      alpha-*-osf*)         fmt=ecoff ;;
+
+# start-sanitize-arc
+      arc-*-elf*)           fmt=elf bfd_gas=yes ;;
+# end-sanitize-arc
+
+      arm-*-riscix*)       fmt=aout targ=arm-lit
+                           emulation=riscix ;;
+      arm-*-aout)          fmt=aout
+                           case "$endian" in
+                             big)      targ=arm-big ;;
+                             *)        targ=arm-lit ;;
+                           esac
+                           ;;
+      arm-*-riscix*)        fmt=aout ;;
+      arm-*-pe)             fmt=coff targ=armcoff em=pe ;;
+
+      hppa-*-*elf*)         fmt=elf em=hppa ;;
+      hppa-*-lites*)        fmt=elf em=hppa ;;
+      hppa-*-osf*)          fmt=som em=hppa ;;
+      hppa-*-hpux*)         fmt=som em=hppa ;;
+      hppa-*-bsd*)          fmt=som em=hppa ;;
+      hppa-*-hiux*)         fmt=som em=hppa ;;
+
+      h8300-*-coff)         fmt=coff ;;
+
+      i386-ibm-aix*)        fmt=coff targ=i386coff
+                            em=i386aix ;;
+      i386-*-bsd*)          fmt=aout em=386bsd ;;
+      i386-*-netbsd0.8)     fmt=aout em=386bsd ;;
+      i386-*-netbsd*)       fmt=aout em=nbsd bfd_gas=yes;;
+      i386-*-linux*aout*)   fmt=aout  em=linux ;;
+      i386-*-linux*coff*)   fmt=coff em=linux
+                            targ=i386coff ;;
+      i386-*-linux*)        fmt=elf em=linux ;;
+      i386-*-lynxos*)       fmt=coff targ=i386coff
+                            em=lynx ;;
+      i386-*-sysv4* | i386-*-solaris* | i386-*-elf)
+                           fmt=elf ;;
+      i386-*-coff | i386-*-sysv* | i386-*-sco* | i386-*-isc*)
+                           fmt=coff targ=i386coff ;;
+      i386-*-vsta)          fmt=aout ;;
+      i386-*-go32)          fmt=coff targ=i386coff ;;
+      i386-*-gnu*elf*)      fmt=elf ;;
+      i386-*-mach* | i386-*-gnu*)
+                           fmt=aout em=mach bfd_gas=yes ;;
+      i386-*-msdos*)        fmt=aout ;;
+      i386-*-pe)            fmt=coff targ=i386coff em=pe ;;
+      i386-*-*nt)           fmt=coff targ=i386coff em=pe ;;
+      i960-*-bout)          fmt=bout ;;
+      i960-*-coff)          fmt=coff em=ic960 targ=ic960coff ;;
+      i960-*-nindy*)        fmt=bout ;;
+      i960-*-vxworks4*)     fmt=bout ;;
+      i960-*-vxworks5.0)    fmt=bout ;;
+      i960-*-vxworks5.*)    fmt=coff em=ic960 targ=ic960coff ;;
+      i960-*-vxworks*)      fmt=bout ;;
+
+      m68k-*-vxworks* | m68k-ericsson-ose | m68k-*-sunos*)
+                           fmt=aout em=sun3 ;;
+      m68k-motorola-sysv)   fmt=coff targ=m68kcoff em=delta ;;
+      m68k-bull-sysv3*)     fmt=coff targ=m68kcoff em=dpx2 ;;
+      m68k-apollo-*)        fmt=coff targ=apollo em=apollo ;;
+      m68k-*-coff | m68k-*-sysv*)
+                           fmt=coff targ=m68kcoff ;;
+      m68k-*-elf)           fmt=elf ;;
+      m68k-*-hpux*)         fmt=hp300 em=hp300 ;;
+      m68k-*-lynxos*)       fmt=coff targ=m68kcoff
+                            em=lynx ;;
+      m68k-*-netbsd*)       fmt=aout em=nbsd bfd_gas=yes ;;
+
+      m88k-*-coff*)         fmt=coff targ=m88kcoff ;;
+
+      # don't change em like *-*-bsd does
+      mips-dec-bsd*)        fmt=aout targ=mips-lit ;;
+      mips-sony-bsd*)       fmt=ecoff targ=mips-big ;;
+      mips-*-bsd*)          AC_MSG_ERROR(Unknown vendor for mips-bsd configuration.) ;;
+      mips-*-ultrix*)       fmt=ecoff targ=mips-lit ;;
+      mips-*-ecoff*)        fmt=ecoff 
+                           case "$endian" in
+                           big) targ=mips-big ;;
+                           *)   targ=mips-lit ;;
+                           esac
+                           ;;
+      mips-*-ecoff*)        fmt=ecoff targ=mips-big ;;
+      mips-*-gnu*)          fmt=aout
+                           case "$endian" in
+                           big) targ=mips-big ;;
+                           *)   targ=mips-lit ;;
+                           esac
+                           ;;
+      mips-*-irix5*)        fmt=elf targ=mips-big ;;
+      mips-*-irix*)         fmt=ecoff targ=mips-big ;;
+      mips-*-riscos*)       fmt=ecoff targ=mips-big ;;
+      mips-*-sysv*)         fmt=ecoff targ=mips-big ;;
+      mips-*-elf*)          fmt=elf 
+                           case "$endian" in
+                           big) targ=mips-big ;;
+                           *)   targ=mips-lit ;;
+                           esac
+                           ;;
+      ppc-*-aix*)           fmt=coff ;;
+      ppc-*-elf* | ppc-*-eabi* | ppc-*-sysv4*)
+                           fmt=elf
+                           case "$endian" in
+                           big)  targ=ppc-big ;;
+                           *)    targ=ppc-lit ;;
+                           esac
+                           ;;
+      ppc-*-netware*)       fmt=elf em=ppcnw ;;
+
+      sh-*-coff)            fmt=coff ;;
+
+# start-sanitize-rce
+      rce-*-aout)           fmt=aout ;;
+# end-sanitize-rce
+
+      ns32k-pc532-mach*)    fmt=aout em=pc532mach ;;
+      ns32k-pc532-netbsd*)  fmt=aout em=nbsd532 ;;
+
+      sparc-*-sunos4*)      fmt=aout em=sun3 ;;
+      sparc-*-aout | sparc*-*-vxworks)
+                           fmt=aout ;;
+      sparc-*-coff)         fmt=coff ;;
+      sparc-*-lynxos*)      fmt=coff em=lynx ;;
+      sparc-fujitsu-none)   fmt=aout ;;
+      sparc-*-elf | sparc*-*-solaris*)
+                           fmt=elf ;;
+      sparc-*-netbsd*)      fmt=aout em=nbsd bfd_gas=yes ;;
+
+      vax-*-bsd* | vax-*-ultrix*)
+                           fmt=aout ;;
+      vax-*-vms)            fmt=vms ;;
+
+      z8k-*-coff | z8k-*-sim)
+                           fmt=coff ;;
+
+      w65-*-*)              fmt=coff ;;
+
+      *-*-aout | *-*-scout)
+                           fmt=aout ;;
+      *-*-nindy*)
+                           fmt=bout ;;
+      *-*-bsd*)
+                           fmt=aout em=sun3 ;;
+      *-*-generic)          fmt=generic ;;
+      *-*-xray | *-*-hms)   fmt=coff ;;
+      *-*-sim)              fmt=coff ;;
+      *-*-elf | *-*-sysv4* | *-*-solaris*)
+                           AC_MSG_WARN(GAS support for ELF format is incomplete.)
+                           fmt=elf dev=yes ;;
+      *-*-vxworks)          fmt=aout ;;
+      *-*-netware)          fmt=elf ;;
+    esac
+
+    case ${cpu_type}-${fmt} in
+      arm-*)   bfd_gas=yes ;;
+    # not yet
+    # i386-aout)       bfd_gas=preferred ;;
+      mips-*)  bfd_gas=yes ;;
+      ns32k-*) bfd_gas=yes ;;
+      ppc-*)   bfd_gas=yes ;;
+      sparc-*) bfd_gas=yes ;;
+      *-elf)   bfd_gas=yes ;;
+      *-ecoff) bfd_gas=yes ;;
+      *-som)   bfd_gas=yes ;;
+      *)               ;;
+    esac
+
+# See if we really can support this configuration with the emulation code.
+
+    if test $this_target = $target ; then
+      primary_bfd_gas=$bfd_gas
+      obj_format=$fmt
+      gas_target=$targ
+      te_file=$em
+
+      if test $bfd_gas = no ; then
+       # Can't support other configurations this way.
+       break
+      fi
+    elif test $bfd_gas = no ; then
+      # Can't support this configuration.
+      break
+    fi
+
+# From target name and format, produce a list of supported emulations.
+
+    case ${generic_target}-${fmt} in
+      mips-*-irix5*-*) emulation="mipsbelf mipslelf mipself mipsbecoff mipslecoff mipsecoff" ;;
+      mips-*-*-ecoff)  case "$endian" in
+                       big)    emulation="mipsbecoff mipslecoff mipsecoff" ;;
+                       *)      emulation="mipslecoff mipsbecoff mipsecoff" ;;
+                       esac ;;
+      mips-*-*-elf)    case "$endian" in
+                       big)    emulation="mipsbelf mipslelf mipself" ;;
+                       *)      emulation="mipslelf mipsbelf mipself" ;;
+                       esac ;;
+    esac
+
+    emulations="$emulations $emulation"
+
+# Other random stuff.
+
+    test -n "$want_sparcv9" && AC_DEFINE(sparcv9)
+
+done
 
 # Assign floating point type.  Most processors with FP support
 # IEEE FP.  On those that don't support FP at all, usually IEEE
 # is emulated.
 case ${target_cpu} in
   vax | tahoe )        atof=${target_cpu} ;;
-  *)                   atof=ieee ;;
+  *)           atof=ieee ;;
 esac
 
 case "${obj_format}" in
@@ -211,18 +365,12 @@ fi
 # and target makefile frag
 
 target_frag=${srcdir}/config/${gas_target}.mt
+if test ! -r ${target_frag}; then
+  target_frag=/dev/null # ick! but subst_file can't be conditionalized
+fi
 AC_SUBST_FILE(target_frag)
 
-case ${cpu_type}-${obj_format} in
-# not yet
-# i386-aout)   bfd_gas=preferred ;;
-  *-elf)       bfd_gas=yes ;;
-  *-ecoff)     bfd_gas=yes ;;
-  *-som)       bfd_gas=yes ;;
-  *)           ;;
-esac
-
-case ${user_bfd_gas}-${bfd_gas} in
+case ${user_bfd_gas}-${primary_bfd_gas} in
   yes-yes | no-no)
     # We didn't override user's choice.
     ;;
@@ -230,17 +378,96 @@ case ${user_bfd_gas}-${bfd_gas} in
     AC_MSG_WARN(Use of BFD is required for ${target}; overriding config options.)
     ;;
   no-preferred)
-    bfd_gas=no
+    primary_bfd_gas=no
     ;;
   *-preferred)
-    bfd_gas=yes
+    primary_bfd_gas=yes
+    ;;
+  yes-*)
+    primary_bfd_gas=yes
     ;;
   -*)
     # User specified nothing.
     ;;
 esac
 
-case ${bfd_gas}-${cpu_type}-${obj_format} in
+# Some COFF configurations want these random other flags set.
+case ${obj_format} in
+  coff)
+    case ${target_cpu_type} in
+      i386) AC_DEFINE(I386COFF) ;;
+      m68k) AC_DEFINE(M68KCOFF) ;;
+      m88k) AC_DEFINE(M88KCOFF) ;;
+    esac
+    ;;
+esac
+
+# Getting this done right is going to be a bitch.  Each configuration specified
+# with --enable-targets=... should be checked for environment, format, cpu, and
+# bfd_gas setting.
+#
+# For each configuration, the necessary object file support code must be linked
+# in.  This might be only one, it might be up to four.  The necessary emulation
+# code needs to be provided, too.
+#
+# And then there's "--enable-targets=all"....
+#
+# For now, just always do it for MIPS ELF or ECOFF configurations.  Sigh.
+
+formats="${obj_format}"
+emfiles=""
+EMULATIONS=""
+GAS_UNIQ(emulations)
+for em in . $emulations ; do
+  case $em in
+    .) continue ;;
+    mipsbelf | mipslelf)
+       fmt=elf   file=mipself ;;
+    mipsbecoff | mipslecoff)
+       fmt=ecoff file=mipsecoff ;;
+  esac
+  formats="$formats $fmt"
+  emfiles="$emfiles e-$file.o"
+  EMULATIONS="$EMULATIONS &$em,"
+done
+GAS_UNIQ(formats)
+GAS_UNIQ(emfiles)
+if test `set . $formats ; shift ; echo $#` -gt 1 ; then
+  for fmt in $formats ; do
+    case $fmt in
+      aout)    AC_DEFINE(OBJ_MAYBE_AOUT)    ;;
+      bout)    AC_DEFINE(OBJ_MAYBE_BOUT)    ;;
+      coff)    AC_DEFINE(OBJ_MAYBE_COFF)    ;;
+      ecoff)   AC_DEFINE(OBJ_MAYBE_ECOFF)   ;;
+      elf)     AC_DEFINE(OBJ_MAYBE_ELF)     ;;
+      generic) AC_DEFINE(OBJ_MAYBE_GENERIC) ;;
+      hp300)   AC_DEFINE(OBJ_MAYBE_HP300)   ;;
+      ieee)    AC_DEFINE(OBJ_MAYBE_IEEE)    ;;
+      som)     AC_DEFINE(OBJ_MAYBE_SOM)     ;;
+      vms)     AC_DEFINE(OBJ_MAYBE_VMS)     ;;
+    esac
+    extra_objects="$extra_objects obj-$fmt.o"
+  done
+  obj_format=multi
+fi
+if test `set . $emfiles ; shift ; echo $#` -gt 0 ; then
+  te_file=multi
+  extra_objects="$extra_objects $emfiles"
+  DEFAULT_EMULATION=`set . $emulations ; echo $2`
+  AC_DEFINE(USE_EMULATIONS)
+fi
+AC_SUBST(extra_objects)
+AC_DEFINE_UNQUOTED(EMULATIONS, $EMULATIONS)
+AC_DEFINE_UNQUOTED(DEFAULT_EMULATION, "$DEFAULT_EMULATION")
+
+files="config/tc-${cpu_type}.c config/tc-${cpu_type}.h \
+       config/obj-${obj_format}.h config/obj-${obj_format}.c \
+       config/te-${te_file}.h config/atof-${atof}.c \
+       $extra_files"
+links="targ-cpu.c targ-cpu.h obj-format.h obj-format.c targ-env.h atof-targ.c \
+       $extra_links"
+
+case ${primary_bfd_gas}-${cpu_type}-${obj_format} in
   yes-*-coff)  need_bfd=yes ;;
   no-*-coff)   need_bfd=yes
                AC_DEFINE(MANY_SEGMENTS) ;;
@@ -254,16 +481,14 @@ case ${reject_dev_configs}-${dev} in
     ;;
 esac
 
-dnl Looks like the AC_MAKE_LINKS string is taken literally and put into the
-dnl  config.status file.  So the necessary variables also have to be
-dnl  exported.
-AC_SUBST(cpu_type) AC_SUBST(obj_format) AC_SUBST(emulation) AC_SUBST(atof)
-AC_LINK_FILES(targ-cpu.c targ-cpu.h obj-format.h obj-format.c targ-env.h atof-targ.c,
-       config/tc-${cpu_type}.c config/tc-${cpu_type}.h \
-       config/obj-${obj_format}.h config/obj-${obj_format}.c \
-       config/te-${emulation}.h config/atof-${atof}.c)
+AC_SUBST(cpu_type)
+AC_SUBST(obj_format)
+AC_SUBST(atof)
+dnl AC_SUBST(emulation)
 
-case "${bfd_gas}" in
+AC_LINK_FILES($files, $links)
+
+case "${primary_bfd_gas}" in
   yes) AC_DEFINE(BFD_ASSEMBLER)
        need_bfd=yes ;;
 esac
@@ -276,83 +501,45 @@ esac
 AC_SUBST(BFDLIB)
 AC_SUBST(ALL_OBJ_DEPS)
 
-case "x${host}" in
-  x${target})                          ;;
-  *)           AC_DEFINE(CROSS_COMPILE);;
-esac
-
 AC_DEFINE_UNQUOTED(TARGET_ALIAS,       "${target_alias}")
 AC_DEFINE_UNQUOTED(TARGET_CANONICAL,   "${target}")
 AC_DEFINE_UNQUOTED(TARGET_CPU,         "${target_cpu}")
 AC_DEFINE_UNQUOTED(TARGET_VENDOR,      "${target_vendor}")
 AC_DEFINE_UNQUOTED(TARGET_OS,          "${target_os}")
 
-case ${host} in
-  rs6000-*-*)
-       # The IBM compiler mis-compiles some expressions used in gas.
-       # This will tell gas to work around this lossage.
-       AC_DEFINE(IBM_COMPILER_SUX) ;;
-  i386-*-go32)
-       # Using fopen(..., "w") for a binary file breaks under DOS.
-       AC_DEFINE(WANT_FOPEN_BIN)   ;;
-esac
-
 AC_PROG_CC
 AC_PROG_INSTALL
 
 AC_CHECK_HEADERS(string.h stdlib.h memory.h strings.h unistd.h stdarg.h varargs.h errno.h sys/types.h)
 
+# Put this here so that autoconf's "cross-compiling" message doesn't confuse
+# people who are not cross-compiling but are compiling cross-assemblers.
+AC_MSG_CHECKING(whether compiling a cross-assembler)
+if test "${host}" = "${target}"; then
+  cross_gas=no
+else
+  cross_gas=yes
+  AC_DEFINE(CROSS_COMPILE)
+fi
+AC_MSG_RESULT($cross_gas)
+
 dnl ansidecl.h will deal with const
 dnl AC_CONST
 AC_FUNC_ALLOCA
 AC_C_INLINE
 
+# VMS doesn't have unlink.
+AC_CHECK_FUNCS(unlink remove, break)
+
 # Some non-ANSI preprocessors botch requoting inside strings.  That's bad
 # enough, but on some of those systems, the assert macro relies on requoting
 # working properly!
-AC_MSG_CHECKING([for working assert macro])
-AC_CACHE_VAL(gas_cv_assert_ok,
-AC_TRY_LINK([#include <assert.h>
-#include <stdio.h>], [
-/* check for requoting problems */
-static int a, b, c, d;
-static char *s;
-assert (!strcmp(s, "foo bar baz quux"));
-/* check for newline handling */
-assert (a == b
-        || c == d);
-], gas_cv_assert_ok=yes, gas_cv_assert_ok=no))dnl
-AC_MSG_RESULT($gas_cv_assert_ok)
-test $gas_cv_assert_ok = yes || AC_DEFINE(BROKEN_ASSERT)
+GAS_WORKING_ASSERT
 
 # On some systems, the system header files may not declare malloc, realloc,
 # and free.  There are places where gas needs these functions to have been
 # declared -- such as when taking their addresses.
-AC_MSG_CHECKING([whether a malloc declaration is required])
-AC_CACHE_VAL(gas_cv_malloc_decl_needed,
-AC_TRY_LINK([
-#ifdef HAVE_MEMORY_H
-#include <memory.h>
-#endif
-#ifdef HAVE_STRING_H
-#include <string.h>
-#endif
-#ifdef HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-], [
-char *(*f) ();
-f = (char *(*)()) malloc;
-], gas_cv_malloc_decl_needed=no, gas_cv_malloc_decl_needed=yes))dnl
-AC_MSG_RESULT($gas_cv_malloc_decl_needed)
-test $gas_cv_malloc_decl_needed = no || AC_DEFINE(NEED_MALLOC_DECLARATION)
-
-AC_MSG_CHECKING([whether a free declaration is required])
-AC_CACHE_VAL(gas_cv_free_decl_needed,
-AC_TRY_LINK([
+gas_test_headers="
 #ifdef HAVE_MEMORY_H
 #include <memory.h>
 #endif
@@ -365,31 +552,19 @@ AC_TRY_LINK([
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif
-], [
-int (*f) ();
-f = (int (*)()) free;
-], gas_cv_free_decl_needed=no, gas_cv_free_decl_needed=yes))
-AC_MSG_RESULT($gas_cv_free_decl_needed)
-test $gas_cv_free_decl_needed = no || AC_DEFINE(NEED_FREE_DECLARATION)
+"
+GAS_CHECK_DECL_NEEDED(malloc, f, char *(*f)(), $gas_test_headers)
+GAS_CHECK_DECL_NEEDED(free, f, int f, $gas_test_headers)
 
 # Does errno.h declare errno, or do we have to add a separate declaration
 # for it?
-AC_MSG_CHECKING([whether an errno declaration is required])
-AC_CACHE_VAL(gas_cv_errno_decl_needed,
-AC_TRY_LINK([
+GAS_CHECK_DECL_NEEDED(errno, f, int f, [
 #ifdef HAVE_ERRNO_H
 #include <errno.h>
 #endif
-], [
-int x;
-x = errno;
-], gas_cv_errno_decl_needed=no, gas_cv_errno_decl_needed=yes))
-AC_MSG_RESULT($gas_cv_errno_decl_needed)
-test $gas_cv_errno_decl_needed = no || AC_DEFINE(NEED_ERRNO_DECLARATION)
+])
 
 AC_CONFIG_SUBDIRS(testsuite)
 
 dnl This must come last.
-dnl Apparently symlinks are checked for in the directory containing
-dnl  the last Makefile.  Thus the order used here...
-AC_OUTPUT(doc/Makefile Makefile)
+AC_OUTPUT(Makefile doc/Makefile .gdbinit:gdbinit.in)
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