diff --git a/configure.ac b/configure.ac
index fcc57637d62..9493b0142ca 100644
--- a/configure.ac
+++ b/configure.ac
@@ -630,6 +630,12 @@ case "$host_cpu" in
     c_targetcpu="m68k"
     c_unalignedmemory=yes
     ;;
+   loongarch64*)
+    AC_DEFINE(C_TARGETCPU,LOONGARCH64)
+    AC_MSG_RESULT(LoongArch)
+    c_targetcpu="loongarch64"
+    c_unalignedmemory=yes
+    ;;
    armv7*)
     AC_DEFINE(C_TARGETCPU,ARMV7LE)
     AC_MSG_RESULT(ARMv7 Little Endian)
@@ -871,6 +877,10 @@ if test x$enable_mt32 = xyes ; then
       AC_MSG_RESULT(yes)
       AC_DEFINE(C_MT32,1)
       ;;
+    loongarch64)
+      AC_MSG_RESULT(yes)
+      AC_DEFINE(C_MT32,1)
+      ;;
     *)
       enable_mt32=no
       AC_MSG_RESULT(no)
diff --git a/src/libs/libchdr/lzma/CpuArch.h b/src/libs/libchdr/lzma/CpuArch.h
index bd429388024..e322bc9ff3c 100644
--- a/src/libs/libchdr/lzma/CpuArch.h
+++ b/src/libs/libchdr/lzma/CpuArch.h
@@ -83,6 +83,12 @@ MY_CPU_LE_UNALIGN means that CPU is LITTLE ENDIAN and CPU supports unaligned mem
 #endif
 
 
+#if  defined(__loongarch_lp64)
+  #define MY_CPU_NAME "loongarch64"
+  #define MY_CPU_64BIT
+#endif
+
+
 #if  defined(__ppc64__) \
   || defined(__powerpc64__)
   #ifdef __ILP32__