Use the new SuperH fixes in the two multilib samples

- Glibc configure args and tuple need adjustment on SuperH
- Only allow "both endian" and "with CPU" for unspecified arch
  variant. May reconsider endianness (was breaking things before
  adjusting glibc tuple)
- Retire non-multilib sample, it should be a subset of the
  multilib one now.

Signed-off-by: Alexey Neyman <stilor@att.net>

2 files changed, 107 insertions, 6 deletions

diff --git a/scripts/build/arch/sh.sh b/scripts/build/arch/sh.sh
index 27db4d26..1911b200 100644
--- a/scripts/build/arch/sh.sh
+++ b/scripts/build/arch/sh.sh
@@ -15,14 +15,14 @@ CT_DoArchTupleValues () {
     CT_ARCH_FLOAT_CFLAG=
     case "${CT_ARCH_SH_VARIANT}" in
         sh3)    CT_ARCH_ARCH_CFLAG=-m3;;
-        sh4*)
+        sh4*|sh2*)
             # softfp is not possible for SuperH, no need to test for it.
             case "${CT_ARCH_FLOAT}" in
                 hard)
-                    CT_ARCH_ARCH_CFLAG="-m4${CT_ARCH_SH_VARIANT##sh4}"
+                    CT_ARCH_ARCH_CFLAG="-m${CT_ARCH_SH_VARIANT##sh}"
                     ;;
                 soft)
-                    CT_ARCH_ARCH_CFLAG="-m4${CT_ARCH_SH_VARIANT##sh4}-nofpu"
+                    CT_ARCH_ARCH_CFLAG="-m${CT_ARCH_SH_VARIANT##sh}-nofpu"
                     ;;
             esac
             ;;
@@ -38,13 +38,19 @@ CT_DoArchMultilibList() {
     # the default CPU. E.g. if configuring for sh4-*-*, we need to remove
     # "sh4" or "m4" from the multilib list. Otherwise, the resulting compiler
     # will fail when that CPU is selected explicitly "sh4-multilib-linux-gnu-gcc -m4 ..."
-    # as it will fail to find the sysroot with that suffix.
+    # as it will fail to find the sysroot with that suffix. This applies to both
+    # the CPU type inferred from the target tuple (CT_ARCH_SH_VARIANT) as well as
+    # the default CPU configured with --with-cpu (CT_ARCH_CPU).
     IFS=,
     for x in ${CT_CC_GCC_MULTILIB_LIST}; do
         if [ "${x}" = "${CT_ARCH_SH_VARIANT}" -o "sh${x#m}" = "${CT_ARCH_SH_VARIANT}" ]; then
             CT_DoLog WARN "Ignoring '${x}' in multilib list: it is the default multilib"
             continue
         fi
+        if [ "${x}" = "${CT_ARCH_CPU}" -o "sh${x#m}" = "${CT_ARCH_CPU}" ]; then
+            CT_DoLog WARN "Ignoring '${x}' in multilib list: it is the default multilib"
+            continue
+        fi
         new="${new:+${new},}${x}"
     done
     IFS="${save_ifs}"
@@ -52,15 +58,110 @@ CT_DoArchMultilibList() {
     CT_DoLog DEBUG "Adjusted CT_CC_GCC_MULTILIB_LIST to '${CT_CC_GCC_MULTILIB_LIST}'"
 }
 
+#------------------------------------------------------------------------------
+# Get multilib architecture-specific target
+# Usage: CT_DoArchMultilibTarget "target variable" "multilib flags"
+CT_DoArchMultilibTarget ()
+{
+    local target_var="${1}"; shift
+    local -a multi_flags=( "$@" )
+    local target_
+    local newcpu
+
+    for m in "${multi_flags[@]}"; do
+        case "${m}" in
+            -m4*) newcpu=sh4;;
+            -m3*) newcpu=sh3;;
+            -m2*) newcpu=sh2;;
+            -m1*) newcpu=sh1;;
+        esac
+    done
+
+    eval target_=\"\${${target_var}}\"
+
+    # Strip CPU name and append the new one if an option has been seen.
+    if [ -n "${newcpu}" ]; then
+        target_="${newcpu}-${target_#*-}"
+    fi
+
+    # Set the target variable
+    eval ${target_var}=\"${target_}\"
+}
+
+# Adjust target tuple for GLIBC
+CT_DoArchGlibcAdjustTuple() {
+    local target_var="${1}"
+    local target_
+
+    eval target_=\"\${${target_var}}\"
+
+    case "${target_}" in
+        sh-*)
+            # Glibc does not build unless configured with 'shX-*' tuple.
+            # Since we ended up here, no architecture variant has been
+            # specified, so the only source of default is CT_ARCH_CPU.
+            # GCC defaults to sh1, but this Glibc cannot compile for it.
+            if [ -n "${CT_ARCH_CPU}" ]; then
+                target_=${target_/#sh-/${CT_ARCH_CPU}-}
+                CT_DoLog DEBUG "Adjusted target tuple ${target_}"
+            else
+                CT_Abort "GNU C library cannot build for sh1 (GCC default). " \
+                        "Specify architecture variant or the default CPU type."
+            fi
+            ;;
+    esac
+
+    # Set the target variable
+    eval ${target_var}=\"${target_}\"
+}
+
+# Multilib: Adjust configure arguments for GLIBC
+# Usage: CT_DoArchGlibcAdjustConfigure <configure-args-array-name> <cflags>
+CT_DoArchGlibcAdjustConfigure() {
+    local -a add_args
+    local array="${1}"
+    local cflags="${2}"
+    local opt
+
+    for opt in ${cflags}; do
+        case "${opt}" in
+        -m[1-5]*-nofpu)
+            add_args+=( "--without-fp" )
+            ;;
+        -m[1-5]*)
+            add_args+=( "--with-fp" )
+            ;;
+        esac
+    done
+
+    # If architecture variant was specified, we'd have CT_ARCH_ARCH_CFLAG
+    # and it would've been handled above. Our last resort: CT_ARCH_CPU
+    if [ "${#add_args[@]}" = 0 ]; then
+        case "${CT_ARCH_CPU}" in
+        sh[34]*-nofpu)
+            add_args+=( "--without-fp" )
+            ;;
+        sh[34]*)
+            add_args+=( "--with-fp" )
+            ;;
+        esac
+    fi
+
+    eval "${array}+=( \"\${add_args[@]}\" )"
+}
+
 CT_DoArchUClibcConfig() {
     local cfg="${1}"
 
-    # FIXME: uclibc (!ng) seems to support sh64 (sh5), too
     CT_DoArchUClibcSelectArch "${cfg}" "sh"
+    CT_KconfigDisableOption "CONFIG_SH2" "${cfg}"
+    CT_KconfigDisableOption "CONFIG_SH2A" "${cfg}"
     CT_KconfigDisableOption "CONFIG_SH3" "${cfg}"
     CT_KconfigDisableOption "CONFIG_SH4" "${cfg}"
     CT_KconfigDisableOption "CONFIG_SH4A" "${cfg}"
     case "${CT_ARCH_SH_VARIANT}" in
+        sh2) CT_KconfigEnableOption "CONFIG_SH2" "${cfg}";;
+        sh2a) CT_KconfigEnableOption "CONFIG_SH2A" "${cfg}";;
         sh3) CT_KconfigEnableOption "CONFIG_SH3" "${cfg}";;
         sh4) CT_KconfigEnableOption "CONFIG_SH4" "${cfg}";;
         sh4a) CT_KconfigEnableOption "CONFIG_SH4A" "${cfg}";;
diff --git a/scripts/build/arch/x86.sh b/scripts/build/arch/x86.sh
index 3a7a2cec..471d377a 100644
--- a/scripts/build/arch/x86.sh
+++ b/scripts/build/arch/x86.sh
@@ -86,7 +86,7 @@ CT_DoArchGlibcAdjustTuple() {
         # x86 quirk: architecture name is i386, but glibc expects i[4567]86 - to
         # indicate the desired optimization. If it was a multilib variant of x86_64,
         # then it targets at least NetBurst a.k.a. i786, but we'll follow the model
-        # above # and set the optimization to i686. Otherwise, replace with the most
+        # above and set the optimization to i686. Otherwise, replace with the most
         # conservative choice, i486.
         i386-*)
             if [ "${CT_TARGET_ARCH}" = "x86_64" ]; then