diff --git a/libcxx.spec b/libcxx.spec
index 1b9554f..b46529d 100644
--- a/libcxx.spec
+++ b/libcxx.spec
@@ -1,3 +1,5 @@
+%undefine __cmake_in_source_build
+
 %bcond_without sys_llvm
 %bcond_without check
 %bcond_without toolchain_clang
@@ -39,7 +41,7 @@
 
 Name:       %{pkg_name}
 Version:    %{libcxx_version}
-Release:    3%{?dist}
+Release:    4
 Summary:    LLVM "libcxx" runtime libraries
 License:    Apache-2.0
 URL:        http://llvm.org
@@ -160,8 +162,6 @@ cp ../%{runtimes_cmakedir}/WarningFlags.cmake runtimes/cmake/Modules/
 #%py3_shebang_fix libcxx/utils/
 
 %build
-mkdir -p _build
-cd _build
 # Copy CFLAGS into ASMFLAGS, so -fcf-protection is used when compiling assembly files.
 export ASMFLAGS=$CFLA
 
@@ -189,14 +189,11 @@ export ASMFLAGS=$CFLA
 %if %{with bisheng_autotuner}
 	-DLLVM_ENABLE_AUTOTUNER=ON \
 %endif
-    ..
 
-%ninja_build
+%cmake_build
 
 %install
-cd _build
-
-%ninja_install
+%cmake_install
 # We can't install the unversionned path on default location because that would conflict with
 # https://src.fedoraproject.org/rpms/libunwind
 #
@@ -214,7 +211,6 @@ popd
  
 rm %{buildroot}%{_pkgdocdir}/html/.buildinfo
  
-%ldconfig_scriptlets
 %files
 %license libcxx/LICENSE.TXT
 %doc libcxx/CREDITS.TXT libcxx/TODO.TXT
@@ -269,6 +265,10 @@ rm %{buildroot}%{_pkgdocdir}/html/.buildinfo
 %doc %{_pkgdocdir}/html
 
 %changelog
+* Thu Nov 07 2024 Funda Wang <fundawang@yeah.net> - 17.0.6-4
+- adopt to new cmake macro
+- force out-of-source build
+
 * Tue Aug 20 2024 liyunfei <liyunfei33@huawei.com> - 17.0.6-3
 - Add BiSheng Autotuner support.