diff --git a/6_buildjdk.sh b/6_buildjdk.sh
index 92616fab..7bb2c4c2 100755
--- a/6_buildjdk.sh
+++ b/6_buildjdk.sh
@@ -50,8 +50,8 @@ if [[ "$BUILD_IOS" != "1" ]]; then
 
   AUTOCONF_x11arg="--x-includes=$ANDROID_INCLUDE/X11"
 
-  export CFLAGS+=" -mllvm -polly -DANDROID"
-  export LDFLAGS+=" -L$PWD/dummy_libs"
+  export CFLAGS+=" -mllvm -polly -DANDROID -Wno-error=implicit-function-declaration -Wno-error=int-conversion"
+  export LDFLAGS+=" -L$PWD/dummy_libs -Wl,--undefined-version"
 
 # Create dummy libraries so we won't have to remove them in OpenJDK makefiles
   mkdir -p dummy_libs
@@ -88,9 +88,9 @@ cd openjdk-${TARGET_VERSION}
 # Apply patches
 git reset --hard
 if [[ "$BUILD_IOS" != "1" ]]; then
-  find ../patches/jre_${TARGET_VERSION}/android -name "*.diff" -print0 | xargs -0 -I {} sh -c 'echo "Applying {}" && git apply  --reject --whitespace=fix {} || echo "git apply failed (Android patch set)"' 
+  find ../patches/jre_${TARGET_VERSION}/android -name "*.diff" -print0 | xargs -0 -I {} sh -c 'echo "Applying {}" && git apply  --reject --whitespace=fix {} || (echo "git apply failed (Android patch set)" && exit 1)' 
 else
-  find ../patches/jre_${TARGET_VERSION}/ios -name "*.diff" -print0 | xargs -0 -I {} sh -c 'echo "Applying {}" && git apply --reject --whitespace=fix {} || echo "git apply failed (iOs patch set)"' 
+  find ../patches/jre_${TARGET_VERSION}/ios -name "*.diff" -print0 | xargs -0 -I {} sh -c 'echo "Applying {}" && git apply --reject --whitespace=fix {} || (echo "git apply failed (iOs patch set)" && exit 1)' 
 
   # Hack: exclude building macOS stuff
   desktop_mac=src/java.desktop/macosx
diff --git a/Dockerfile b/Dockerfile
index 38a95b68..a8ad971a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:jammy
+FROM ubuntu:23.10
 
 RUN apt-get update
 
@@ -29,7 +29,9 @@ RUN apt-get install -y \
     clang \
     git \
     file \
-    make
+    make \
+    cmake \
+    xz-utils
 
 # JDK 17
 RUN apt-get install -y openjdk-17-jdk
@@ -39,7 +41,7 @@ WORKDIR /home
 
 
 # NDK install
-ENV NDK_VERSION r25c
+ENV NDK_VERSION r27b
 ENV ANDROID_NDK_HOME /home/android-ndk-$NDK_VERSION
 RUN \
     wget -nc -nv -O android-ndk-$NDK_VERSION-linux-x86_64.zip "https://dl.google.com/android/repository/android-ndk-$NDK_VERSION-linux.zip" \
diff --git a/patches/jre_17/android/1_fix_toolchain.diff b/patches/jre_17/android/1_fix_toolchain.diff
index a3bec2c1..48780db9 100644
--- a/patches/jre_17/android/1_fix_toolchain.diff
+++ b/patches/jre_17/android/1_fix_toolchain.diff
@@ -35,7 +35,7 @@ index 5eed1138f..b4319de67 100644
 @@ -374,7 +374,8 @@ AC_DEFUN([FLAGS_SETUP_CFLAGS_HELPER],
    #### OS DEFINES, these should be independent on toolchain
    if test "x$OPENJDK_TARGET_OS" = xlinux; then
-     CFLAGS_OS_DEF_JVM="-DLINUX"
+     CFLAGS_OS_DEF_JVM="-DLINUX -D_FILE_OFFSET_BITS=64"
 -    CFLAGS_OS_DEF_JDK="-D_GNU_SOURCE -D_REENTRANT -D_LARGEFILE64_SOURCE"
 +    # CFLAGS_OS_DEF_JDK="-D_GNU_SOURCE -D_REENTRANT -D_LARGEFILE64_SOURCE"
 +    CFLAGS_OS_DEF_JDK="-D_GNU_SOURCE -D_REENTRANT -D_LARGEFILE64_SOURCE -D__USE_BSD"
diff --git a/patches/jre_21/android/jdk21u_android.diff b/patches/jre_21/android/jdk21u_android.diff
index 6dfd3be5..5eeac6b7 100644
--- a/patches/jre_21/android/jdk21u_android.diff
+++ b/patches/jre_21/android/jdk21u_android.diff
@@ -2258,26 +2258,6 @@ index 21ef40688..b8c2520d2 100644
  #endif
  
      if (exec_path == NULL) {
-diff --git a/src/java.base/unix/native/libnet/net_util_md.c b/src/java.base/unix/native/libnet/net_util_md.c
-index 4ec11a136..01b85db4d 100644
---- a/src/java.base/unix/native/libnet/net_util_md.c
-+++ b/src/java.base/unix/native/libnet/net_util_md.c
-@@ -129,6 +129,7 @@ jint  IPv6_supported()
-     SOCKETADDRESS sa;
-     socklen_t sa_len = sizeof(SOCKETADDRESS);
-
-+#ifndef __ANDROID__  // ANDROID: skip check, see libcore commit ae218d9b
-     fd = socket(AF_INET6, SOCK_STREAM, 0) ;
-     if (fd < 0) {
-         /*
-@@ -172,6 +173,7 @@ jint  IPv6_supported()
-         }
-     }
- #endif
-+#endif  // !defined __ANDROID__
-
-     /*
-      *  OK we may have the stack available in the kernel,
 diff --git a/src/java.base/unix/native/libnet/net_util_md.h b/src/java.base/unix/native/libnet/net_util_md.h
 index 902cf9673..3b8acd66b 100644
 --- a/src/java.base/unix/native/libnet/net_util_md.h
diff --git a/setdevkitpath.sh b/setdevkitpath.sh
index 01af5eb1..81ac2d93 100755
--- a/setdevkitpath.sh
+++ b/setdevkitpath.sh
@@ -1,5 +1,5 @@
 # Description: Set the environment variables for the build scripts.
-export NDK_VERSION=r25c
+export NDK_VERSION=r27b
 
 # Target version is either 17 or 21
 if [[ -z "$TARGET_VERSION" ]]