[Qemu-devel] [PATCH v2] configure: List available targets in --help output

[Peter Maydell]

Include the list of available targets in the --help output
for the --target-list= option.

Signed-off-by: Peter Maydell <address@hidden>
---
v2: As suggested by Stefan Weil, put the target list in --help
rather than using '--target-list=?'. This patch includes using
fold(1) in configure -- this should be OK because fold is a
standard POSIX utility (and part of GNU coreutils and busybox).
The resulting output looks like this:

Usage: configure [options]
Options: [defaults in brackets after descriptions]

Standard options:
  --help                   print this message
  --prefix=PREFIX          install in PREFIX [/usr/local]
  --interp-prefix=PREFIX   where to find shared libraries, etc.
                           use %M for cpu name [/usr/gnemul/qemu-%M]
  --target-list=LIST       set target list (default: build everything)
                           Available targets: i386-softmmu x86_64-softmmu 
                           arm-softmmu cris-softmmu lm32-softmmu m68k-softmmu 
                           microblaze-softmmu microblazeel-softmmu mips-softmmu 
                           mipsel-softmmu mips64-softmmu mips64el-softmmu 
                           ppc-softmmu ppcemb-softmmu ppc64-softmmu sh4-softmmu 
                           sh4eb-softmmu sparc-softmmu sparc64-softmmu 
                           i386-linux-user x86_64-linux-user alpha-linux-user 
                           arm-linux-user armeb-linux-user cris-linux-user 
                           m68k-linux-user microblaze-linux-user 
                           microblazeel-linux-user mips-linux-user 
                           mipsel-linux-user ppc-linux-user ppc64-linux-user 
                           ppc64abi32-linux-user sh4-linux-user 
                           sh4eb-linux-user sparc-linux-user sparc64-linux-user 
                           sparc32plus-linux-user unicore32-linux-user 

Advanced options (experts only):
[etc]


 configure |  134 ++++++++++++++++++++++++++++++++-----------------------------
 1 files changed, 70 insertions(+), 64 deletions(-)

diff --git a/configure b/configure
index 6f75e2e..f46f5d4 100755
--- a/configure
+++ b/configure
@@ -822,6 +822,72 @@ esac
 
 [ -z "$guest_base" ] && guest_base="$host_guest_base"
 
+
+default_target_list=""
+
+# these targets are portable
+if [ "$softmmu" = "yes" ] ; then
+    default_target_list="\
+i386-softmmu \
+x86_64-softmmu \
+arm-softmmu \
+cris-softmmu \
+lm32-softmmu \
+m68k-softmmu \
+microblaze-softmmu \
+microblazeel-softmmu \
+mips-softmmu \
+mipsel-softmmu \
+mips64-softmmu \
+mips64el-softmmu \
+ppc-softmmu \
+ppcemb-softmmu \
+ppc64-softmmu \
+sh4-softmmu \
+sh4eb-softmmu \
+sparc-softmmu \
+sparc64-softmmu \
+"
+fi
+# the following are Linux specific
+if [ "$linux_user" = "yes" ] ; then
+    default_target_list="${default_target_list}\
+i386-linux-user \
+x86_64-linux-user \
+alpha-linux-user \
+arm-linux-user \
+armeb-linux-user \
+cris-linux-user \
+m68k-linux-user \
+microblaze-linux-user \
+microblazeel-linux-user \
+mips-linux-user \
+mipsel-linux-user \
+ppc-linux-user \
+ppc64-linux-user \
+ppc64abi32-linux-user \
+sh4-linux-user \
+sh4eb-linux-user \
+sparc-linux-user \
+sparc64-linux-user \
+sparc32plus-linux-user \
+unicore32-linux-user \
+"
+fi
+# the following are Darwin specific
+if [ "$darwin_user" = "yes" ] ; then
+    default_target_list="$default_target_list i386-darwin-user ppc-darwin-user 
"
+fi
+# the following are BSD specific
+if [ "$bsd_user" = "yes" ] ; then
+    default_target_list="${default_target_list}\
+i386-bsd-user \
+x86_64-bsd-user \
+sparc-bsd-user \
+sparc64-bsd-user \
+"
+fi
+
 if test x"$show_help" = x"yes" ; then
 cat << EOF
 
@@ -834,7 +900,9 @@ echo "  --help                   print this message"
 echo "  --prefix=PREFIX          install in PREFIX [$prefix]"
 echo "  --interp-prefix=PREFIX   where to find shared libraries, etc."
 echo "                           use %M for cpu name [$interp_prefix]"
-echo "  --target-list=LIST       set target list [$target_list]"
+echo "  --target-list=LIST       set target list (default: build everything)"
+echo "Available targets: $default_target_list" | \
+    fold -s -w 53 | sed -e 's/^/                           /'
 echo ""
 echo "Advanced options (experts only):"
 echo "  --source-path=PATH       path of source code [$source_path]"
@@ -1004,70 +1072,8 @@ if test "$solaris" = "yes" ; then
   fi
 fi
 
-
 if test -z "$target_list" ; then
-# these targets are portable
-    if [ "$softmmu" = "yes" ] ; then
-        target_list="\
-i386-softmmu \
-x86_64-softmmu \
-arm-softmmu \
-cris-softmmu \
-lm32-softmmu \
-m68k-softmmu \
-microblaze-softmmu \
-microblazeel-softmmu \
-mips-softmmu \
-mipsel-softmmu \
-mips64-softmmu \
-mips64el-softmmu \
-ppc-softmmu \
-ppcemb-softmmu \
-ppc64-softmmu \
-sh4-softmmu \
-sh4eb-softmmu \
-sparc-softmmu \
-sparc64-softmmu \
-"
-    fi
-# the following are Linux specific
-    if [ "$linux_user" = "yes" ] ; then
-        target_list="${target_list}\
-i386-linux-user \
-x86_64-linux-user \
-alpha-linux-user \
-arm-linux-user \
-armeb-linux-user \
-cris-linux-user \
-m68k-linux-user \
-microblaze-linux-user \
-microblazeel-linux-user \
-mips-linux-user \
-mipsel-linux-user \
-ppc-linux-user \
-ppc64-linux-user \
-ppc64abi32-linux-user \
-sh4-linux-user \
-sh4eb-linux-user \
-sparc-linux-user \
-sparc64-linux-user \
-sparc32plus-linux-user \
-unicore32-linux-user \
-"
-    fi
-# the following are Darwin specific
-    if [ "$darwin_user" = "yes" ] ; then
-        target_list="$target_list i386-darwin-user ppc-darwin-user "
-    fi
-# the following are BSD specific
-    if [ "$bsd_user" = "yes" ] ; then
-        target_list="${target_list}\
-i386-bsd-user \
-x86_64-bsd-user \
-sparc-bsd-user \
-sparc64-bsd-user \
-"
-    fi
+    target_list="$default_target_list"
 else
     target_list=`echo "$target_list" | sed -e 's/,/ /g'`
 fi
-- 
1.7.1