* configure: Default ${build} correctly. Avoid picking up extra

	spaces when reading CC and CXX from Makefile.  When doing a
	Canadian Cross, use plausible default values for numerous
	variables.
	* configure.in: When doing a Canadian Cross, don't try to
	configure tools whose configure script can't handle it.

diff --git a/ChangeLog b/ChangeLog
index bf95b92a3a6d54d4ed0a3206f50c5aec72eeb83c..bb60f111c54a0067de1eb81c4517c5589d34b3e6 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+Tue Nov  7 15:45:17 1995  Ian Lance Taylor  <ian@cygnus.com>
+
+       * configure: Default ${build} correctly.  Avoid picking up extra
+       spaces when reading CC and CXX from Makefile.  When doing a
+       Canadian Cross, use plausible default values for numerous
+       variables.
+       * configure.in: When doing a Canadian Cross, don't try to
+       configure tools whose configure script can't handle it.
+
 Mon Nov  6 19:32:17 1995  Jim Wilson  <wilson@chestnut.cygnus.com>
 
        * cfg-ml-com.in (sh-*-*): Add m2 and ml/m2 to multidirs.

diff --git a/configure b/configure
index 784c2804d4c4aec106f569c9df16bfd877868842..a86251fa3c6cad6beff828582cb43db25944c011 100755 (executable)
--- a/configure
+++ b/configure
@@ -550,7 +550,7 @@ case "${build_alias}" in
            build_cpu=`echo $result | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\1/'`
            build_vendor=`echo $result | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\2/'`
            build_os=`echo $result | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\3/'`
-           build=${host_cpu}-${host_vendor}-${host_os}
+           build=${build_cpu}-${build_vendor}-${build_os}
            build_alias=${host_alias}
        fi
        ;;
@@ -649,7 +649,7 @@ if [ -z "${CC}" -a -r Makefile ]; then
 /\\$/ N
 /\\$/ b loop
 s/\\\n//g
-/^CC[  ]*=/ s/CC[      ]*=\(.*\)/\1/p' < Makefile > Makefile.cc
+/^CC[  ]*=/ s/CC[      ]*=[    ]*\(.*\)/\1/p' < Makefile > Makefile.cc
   CC=`tail -1 Makefile.cc`
   rm -f Makefile.cc
 fi
@@ -659,26 +659,114 @@ if [ -z "${CXX}" -a -r Makefile ]; then
 /\\$/ N
 /\\$/ b loop
 s/\\\n//g
-/^CXX[         ]*=/ s/CXX[     ]*=\(.*\)/\1/p' < Makefile > Makefile.cc
+/^CXX[         ]*=/ s/CXX[     ]*=[    ]*\(.*\)/\1/p' < Makefile > Makefile.cc
   CXX=`tail -1 Makefile.cc`
   rm -f Makefile.cc
 fi
 
-# If CC is still not set, try to get gcc.
-if [ -z "${CC}" ]; then
-  IFS="${IFS=  }"; save_ifs="$IFS"; IFS="${IFS}:"
-  for dir in $PATH; do
-    test -z "$dir" && dir=.
-    if test -f $dir/gcc; then
-      CC="gcc"
-      break
+if [ "${build}" != "${host}" ]; then
+  # If we are doing a Canadian Cross, in which the host and build systems
+  # are not the same, we set reasonable default values for the tools.
+
+  tools="AR AR_FOR_TARGET AS AS_FOR_TARGET BISON CC_FOR_BUILD"
+  tools="${tools} CC_FOR_TARGET CXX_FOR_TARGET HOST_PREFIX"
+  tools="${tools} HOST_PREFIX_1 LEX MAKEINFO NM NM_FOR_TARGET"
+  tools="${tools} RANLIB RANLIB_FOR_TARGET"
+
+  for var in ${tools}; do
+    if [ -z "`eval 'echo $'"${var}"`" -a -r Makefile ]; then
+      sed -n -e ':loop
+/\\$/ N
+/\\$/ b loop
+s/\\\n//g
+/^'"${var}"'[  ]*=/ s/'"${var}"'[      ]*=[    ]*\(.*\)/\1/p' \
+       < Makefile > Makefile.v
+      t=`tail -1 Makefile.v`
+      if [ -n "${t}" ]; then
+       eval "${var}='${t}'"
+      fi
+      rm -f Makefile.v
     fi
   done
-  IFS="$save_ifs"
-  CC=${CC-cc}
-fi
 
-CXX=${CXX-"g++ -O"}
+  AR=${AR-${host_alias}-ar}
+  AR_FOR_TARGET=${AR_FOR_TARGET-${target_alias}-ar}
+  AS=${AS-${host_alias}-as}
+  AS_FOR_TARGET=${AS_FOR_TARGET-${target_alias}-as}
+  CC=${CC-${host_alias}-gcc}
+  CXX=${CXX-${host_alias}-gcc}
+  CC_FOR_BUILD=${CC_FOR_BUILD-gcc}
+  CC_FOR_TARGET=${CC_FOR_TARGET-${target_alias}-gcc}
+  CXX_FOR_TARGET=${CXX_FOR_TARGET-${target_alias}-gcc}
+  HOST_PREFIX=${build_alias}-
+  HOST_PREFIX_1=${build_alias}-
+  MAKEINFO=${MAKEINFO-makeinfo}
+  NM=${NM-${host_alias}-nm}
+  NM_FOR_TARGET=${NM_FOR_TARGET-${target_alias}-nm}
+  RANLIB=${RANLIB-${host_alias}-ranlib}
+  RANLIB_FOR_TARGET=${RANLIB_FOR_TARGET-${target_alias}-ranlib}
+
+  if [ -z "${BISON}" ]; then
+    IFS="${IFS=        }"; save_ifs="$IFS"; IFS="${IFS}:"
+    for dir in $PATH; do
+      test -z "$dir" && dir=.
+      if test -f $dir/byacc; then
+       BISON=byacc
+       break
+      fi
+      if test -f $dir/bison; then
+       BISON=bison
+       break
+      fi
+      if test -f $dir/yacc; then
+       BISON=yacc
+       break
+      fi
+    done
+    IFS="$save_ifs"
+    BISON=${BISON-bison}
+  fi
+
+  if [ -z "${LEX}" ]; then
+    IFS="${IFS=        }"; save_ifs="$IFS"; IFS="${IFS}:"
+    for dir in $PATH; do
+      test -z "$dir" && dir=.
+      if test -f $dir/flex; then
+       LEX=flex
+       break
+      fi
+      if test -f $dir/lex; then
+       LEX=lex
+       break
+      fi
+    done
+    IFS="$save_ifs"
+    LEX=${LEX-flex}
+  fi
+
+  # Export variables which autoconf might try to set.
+  export AS
+  export AR
+  export CC_FOR_BUILD
+  export NM
+  export RANLIB
+else
+  # If CC is still not set, try to get gcc.
+  if [ -z "${CC}" ]; then
+    IFS="${IFS=        }"; save_ifs="$IFS"; IFS="${IFS}:"
+    for dir in $PATH; do
+      test -z "$dir" && dir=.
+      if test -f $dir/gcc; then
+       CC="gcc"
+       break
+      fi
+    done
+    IFS="$save_ifs"
+    CC=${CC-cc}
+  fi
+
+  CXX=${CXX-"g++ -O"}
+fi
 
 export CC
 export CXX
@@ -954,6 +1042,23 @@ EOF
                     -e "s:^program_transform_name[     ]*=.*$:program_transform_name = ${program_transform_name}:" \
                     -e "s:^tooldir[    ]*=.*$:tooldir = ${tooldir}:" \
                     ${subdir}/Makefile.tem >> ${Makefile}
+
+           # If this is a Canadian Cross, preset the values of many more
+           # tools.
+           if [ "${build}" != "${host}" ]; then
+               for var in ${tools}; do
+                   val=`eval 'echo $'"${var}"`
+                   sed -e "/^${var}[   ]*=/{
+                          :loop1
+                          /\\\\$/ N
+                          /\\\\$/ b loop1
+                          s/\\\\\\n//g
+                          s%^${var}[   ]*=.*$%${var} = ${val}%
+                          }" ${Makefile} > ${Makefile}.tem
+                   mv -f ${Makefile}.tem ${Makefile}
+               done
+           fi
+
             # final copy now in ${Makefile}
 
         else

diff --git a/configure.in b/configure.in
index 94f88867df3f79ad502d29c019b4164ccc15e7fb..b4b51c6124e44ee40ea44039e52a056e0f288a34 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -507,6 +507,12 @@ case "${target}" in
      ;;    
 esac
 
+# If we are building a Canadian Cross, discard tools that can not be built
+# using a cross compiler.  FIXME: These tools should be fixed.
+if [ "${build}" != "${host}" ]; then
+  noconfigdirs="$noconfigdirs expect dejagnu make texinfo diff"
+fi
+
 # Remove the entries in $skipdirs and $noconfigdirs from $configdirs and
 # $target_configdirs.
 # If we have the source for $noconfigdirs entries, add them to $notsupp.