diff --git a/new_changelogs/20261029T102000Z-fixed-shared-map-host-test-build.md b/new_changelogs/20261029T102000Z-fixed-shared-map-host-test-build.md
new file mode 100644
index 000000000..e927408a7
--- /dev/null
+++ b/new_changelogs/20261029T102000Z-fixed-shared-map-host-test-build.md
@@ -0,0 +1,4 @@
+- **Shared-map host tests now exercise provisioned language runtimes.** The
+  Lua, JavaScript, Python, Perl, and Ruby bridges now compile with the
+  sandbox ABI enabled and receive their detected runtime library paths,
+  instead of failing before their grant-map checks run.
diff --git a/tests/sandbox/detect_host_langs.sh b/tests/sandbox/detect_host_langs.sh
index a9c805edc..78a049409 100644
--- a/tests/sandbox/detect_host_langs.sh
+++ b/tests/sandbox/detect_host_langs.sh
@@ -8,6 +8,9 @@ for v in lua5.4 lua5.3 lua5.2; do
     if pkg-config --exists $v 2>/dev/null; then
         LUA_CFLAGS=$(pkg-config --cflags $v)
         LUA_LIBS=$(pkg-config --libs $v)
+        LUA_LIBNAME=$(pkg-config --libs-only-l $v | sed -n 's/.*-l\([^ ]*\).*/lib\1.so/p')
+        AETHER_LUA_SONAME=$(ldconfig -p 2>/dev/null | awk -v lib="$LUA_LIBNAME" '$1 == lib { print $NF; exit }')
+        export AETHER_LUA_SONAME
         LUA_CMD=$(echo $v | tr -d '.')  # lua54, lua53, etc — some systems use this
         # Try common command names
         for cmd in $v lua; do
@@ -26,6 +29,8 @@ for v in python3 python3.12 python3.11 python3.10; do
         PY_CFLAGS=$($cfg --includes 2>/dev/null)
         PY_LIBS="-l$(echo $v | tr -d .)"  # -lpython311 etc doesn't work, try embed
         PY_LIBS=$($cfg --ldflags --embed 2>/dev/null || $cfg --ldflags 2>/dev/null)
+        AETHER_PYTHON_SONAME=$($v -c 'import os, sysconfig; print(os.path.join(sysconfig.get_config_var("LIBDIR") or "", sysconfig.get_config_var("INSTSONAME") or ""))' 2>/dev/null)
+        export AETHER_PYTHON_SONAME
         PY_AVAILABLE=1
         break
     fi
@@ -36,6 +41,8 @@ if [ $PY_AVAILABLE -eq 0 ]; then
         if pkg-config --exists $v 2>/dev/null; then
             PY_CFLAGS=$(pkg-config --cflags $v)
             PY_LIBS=$(pkg-config --libs $v)
+            AETHER_PYTHON_SONAME=$(python3 -c 'import os, sysconfig; print(os.path.join(sysconfig.get_config_var("LIBDIR") or "", sysconfig.get_config_var("INSTSONAME") or ""))' 2>/dev/null)
+            export AETHER_PYTHON_SONAME
             PY_AVAILABLE=1
             break
         fi
@@ -53,6 +60,8 @@ if perl -MExtUtils::Embed -e ccopts >/dev/null 2>&1; then
         PERL_SO=$(find /usr/lib -name "$PERL_LIBDIR" 2>/dev/null | head -1)
         if [ -n "$PERL_SO" ]; then
             PERL_LIBS="$PERL_SO -ldl -lm -lpthread -lcrypt"
+            AETHER_PERL_SONAME="$PERL_SO"
+            export AETHER_PERL_SONAME
         fi
     fi
     # Fallback: try -lperl
@@ -68,6 +77,10 @@ for v in ruby-3.3 ruby-3.2 ruby-3.1 ruby-3.0 ruby; do
     if pkg-config --exists $v 2>/dev/null; then
         RUBY_CFLAGS=$(pkg-config --cflags $v)
         RUBY_LIBS=$(pkg-config --libs $v)
+        if command -v ruby >/dev/null 2>&1; then
+            AETHER_RUBY_SONAME=$(ruby -rrbconfig -e 'print File.join(RbConfig::CONFIG["libdir"], RbConfig::CONFIG["LIBRUBY_SO"])' 2>/dev/null)
+            export AETHER_RUBY_SONAME
+        fi
         RUBY_AVAILABLE=1
         break
     fi
@@ -78,6 +91,8 @@ JS_AVAILABLE=0
 if [ -f /usr/include/duktape.h ]; then
     JS_CFLAGS=""
     JS_LIBS="-lduktape"
+    AETHER_DUKTAPE_SONAME=$(ldconfig -p 2>/dev/null | awk '/libduktape\.so/ { print $NF; exit }')
+    export AETHER_DUKTAPE_SONAME
     JS_AVAILABLE=1
 fi
 
diff --git a/tests/sandbox/test_shared_map_all.sh b/tests/sandbox/test_shared_map_all.sh
index 5b4a59faa..43e02db05 100755
--- a/tests/sandbox/test_shared_map_all.sh
+++ b/tests/sandbox/test_shared_map_all.sh
@@ -39,7 +39,7 @@ LUA_OUT=$(gcc -o $AE_TMP/test_map_lua \
     "$ROOT/contrib/host/lua/aether_host_lua.c" \
     "$ROOT/runtime/aether_sandbox.c" \
     "$ROOT/runtime/aether_shared_map.c" \
-    $LUA_CFLAGS -I"$ROOT/runtime" -DAETHER_HAS_LUA \
+    $LUA_CFLAGS -I"$ROOT/runtime" -DAETHER_HAS_LUA -DAETHER_HAS_SANDBOX \
     -L"$ROOT/build" -laether $LUA_LIBS -ldl -lm -lrt \
     -Wno-discarded-qualifiers \
     -xc - 2>/dev/null << 'CEOF'
@@ -88,7 +88,7 @@ JS_OUT=$(gcc -o $AE_TMP/test_map_js \
     "$ROOT/contrib/host/duktape/aether_host_duktape.c" \
     "$ROOT/runtime/aether_sandbox.c" \
     "$ROOT/runtime/aether_shared_map.c" \
-    $JS_CFLAGS -I"$ROOT/runtime" -DAETHER_HAS_DUKTAPE \
+    $JS_CFLAGS -I"$ROOT/runtime" -DAETHER_HAS_DUKTAPE -DAETHER_HAS_SANDBOX \
     -L"$ROOT/build" -laether $JS_LIBS -ldl -lm -lrt \
     -Wno-discarded-qualifiers \
     -xc - 2>/dev/null << 'CEOF'
@@ -135,7 +135,7 @@ PY_OUT=$(gcc -o $AE_TMP/test_map_py \
     "$ROOT/contrib/host/python/aether_host_python.c" \
     "$ROOT/runtime/aether_sandbox.c" \
     "$ROOT/runtime/aether_shared_map.c" \
-    $PY_CFLAGS -I"$ROOT/runtime" -DAETHER_HAS_PYTHON \
+    $PY_CFLAGS -I"$ROOT/runtime" -DAETHER_HAS_PYTHON -DAETHER_HAS_SANDBOX \
     -L"$ROOT/build" -laether $PY_LIBS -ldl -lm -lrt \
     -Wno-discarded-qualifiers \
     -xc - 2>/dev/null << 'CEOF'
@@ -186,7 +186,7 @@ PERL_OUT=$(gcc -o $AE_TMP/test_map_perl \
     "$ROOT/contrib/host/perl/aether_host_perl.c" \
     "$ROOT/runtime/aether_sandbox.c" \
     "$ROOT/runtime/aether_shared_map.c" \
-    $PERL_CFLAGS -I"$ROOT/runtime" -DAETHER_HAS_PERL \
+    $PERL_CFLAGS -I"$ROOT/runtime" -DAETHER_HAS_PERL -DAETHER_HAS_SANDBOX \
     -L"$ROOT/build" -laether $PERL_LIBS -lrt \
     -Wno-discarded-qualifiers \
     -xc - 2>/dev/null << 'CEOF'
@@ -233,7 +233,7 @@ RUBY_OUT=$(gcc -o $AE_TMP/test_map_ruby \
     "$ROOT/contrib/host/ruby/aether_host_ruby.c" \
     "$ROOT/runtime/aether_sandbox.c" \
     "$ROOT/runtime/aether_shared_map.c" \
-    $RUBY_CFLAGS -I"$ROOT/runtime" -DAETHER_HAS_RUBY \
+    $RUBY_CFLAGS -I"$ROOT/runtime" -DAETHER_HAS_RUBY -DAETHER_HAS_SANDBOX \
     -L"$ROOT/build" -laether $RUBY_LIBS -ldl -lm -lrt \
     -Wno-discarded-qualifiers \
     -xc - 2>/dev/null << 'CEOF'