configure: store $IFS to $DEFAULT_IFS readonly variable

[obsolete/notmuch-old] / configure

diff --git a/configure b/configure
index ee0ae73750495efbd84eaf28514bc5fe94944d04..7056b4c29b054dfcbea60208928bd859062b9e0a 100755 (executable)
--- a/configure
+++ b/configure
@@ -1,5 +1,8 @@
 #! /bin/sh
 
+# Store original IFS value so it can be changed (and restored) in many places.
+readonly DEFAULT_IFS=$IFS
+
 srcdir=$(dirname "$0")
 
 # For a non-srcdir configure invocation (such as ../configure), create
@@ -171,37 +174,9 @@ for option; do
     elif [ "${option}" = '--without-zsh-completion' ] ; then
        WITH_ZSH=0
     elif [ "${option%%=*}" = '--build' ] ; then
-       build_option="${option#*=}"
-       case ${build_option} in
-           *-*-*) ;;
-           *)
-               echo "Unrecognized value for --build option: ${build_option}"
-               echo "Should be: <cpu>-<vendor>-<os>"
-               echo "See:"
-               echo "  $0 --help"
-               echo ""
-               exit 1
-       esac
-       build_cpu=${build_option%%-*}
-       build_option=${build_option#*-}
-       build_vendor=${build_option%%-*}
-       build_os=${build_option#*-}
+       true
     elif [ "${option%%=*}" = '--host' ] ; then
-       host_option="${option#*=}"
-       case ${host_option} in
-           *-*-*) ;;
-           *)
-               echo "Unrecognized value for --host option: ${host_option}"
-               echo "Should be: <cpu>-<vendor>-<os>"
-               echo "See:"
-               echo "  $0 --help"
-               echo ""
-               exit 1
-       esac
-       host_cpu=${host_option%%-*}
-       host_option=${host_option#*-}
-       host_vendor=${host_option%%-*}
-       host_os=${host_option#*-}
+       true
     elif [ "${option%%=*}" = '--infodir' ] ; then
        true
     elif [ "${option%%=*}" = '--datadir' ] ; then
@@ -365,9 +340,9 @@ elif [ $uname = "SunOS" ] ; then
     printf "Solaris.\n"
     platform=SOLARIS
     linker_resolves_library_dependencies=0
-elif [ $uname = "Linux" ] ; then
-    printf "Linux\n"
-    platform=LINUX
+elif [ $uname = "Linux" ] || [ $uname = "GNU" ] ; then
+    printf "$uname\n"
+    platform="$uname"
     linker_resolves_library_dependencies=1
 
     printf "Checking for $libdir_expanded in ldconfig... "
@@ -379,7 +354,6 @@ elif [ $uname = "Linux" ] ; then
     #  IFS=$(printf '\n')
     #
     # because the shell's command substitution deletes any trailing newlines.
-    OLD_IFS=$IFS
     IFS="
 "
     for path in $ldconfig_paths; do
@@ -387,7 +361,7 @@ elif [ $uname = "Linux" ] ; then
            libdir_in_ldconfig=1
        fi
     done
-    IFS=$OLD_IFS
+    IFS=$DEFAULT_IFS
     if [ "$libdir_in_ldconfig" = '0' ]; then
        printf "No (will set RPATH)\n"
     else
@@ -536,7 +510,7 @@ done
 printf "\n\t${WARN_CFLAGS}\n"
 
 rm -f minimal minimal.c
-       
+
 cat <<EOF
 
 All required packages were found. You may now run the following