diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2dcb1db2..089592f0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -50,7 +50,7 @@ unset(_default_abi)
 
 ## Arch-and-model
 
-set(_all_archs arm arm64 loongarch64 mips32 mips64 power riscv64 s390x i386 x86_64 combined)
+set(_all_archs arm arm64 loongarch64 mips32 mips64 ppc32 ppc64 riscv64 s390x i386 x86_64 combined)
 
 # Try at start to auto determine arch from CMake.
 if(CMAKE_SYSTEM_PROCESSOR IN_LIST _all_archs)
@@ -60,6 +60,8 @@ elseif(_bits EQUAL 32)
     set(_default_arch arm)
   elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^mips")
     set(_default_arch mips32)
+  elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(powerpc|ppc32)")
+    set(_default_arch ppc32)
   else()
     set(_default_arch i386)
   endif()
@@ -69,12 +71,14 @@ else()
     set(_default_arch arm64)
   elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^mips")
     set(_default_arch mips64)
+  elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(powerpc|ppc64)")
+    set(_default_arch ppc64)
   else()
     set(_default_arch x86_64)
   endif()
 endif()
 
-set(BOOST_CONTEXT_ARCHITECTURE "${_default_arch}" CACHE STRING "Boost.Context architecture (arm, arm64, loongarch64, mips32, mips64, power, riscv64, s390x, i386, x86_64, combined)")
+set(BOOST_CONTEXT_ARCHITECTURE "${_default_arch}" CACHE STRING "Boost.Context architecture (arm, arm64, loongarch64, mips32, mips64, ppc32, ppc64, riscv64, s390x, i386, x86_64, combined)")
 set_property(CACHE BOOST_CONTEXT_ARCHITECTURE PROPERTY STRINGS ${_all_archs})
 
 unset(_all_archs)