diff --git a/compiler-rt.spec b/compiler-rt.spec
index 795f37c..453a8a9 100644
--- a/compiler-rt.spec
+++ b/compiler-rt.spec
@@ -12,9 +12,11 @@
 # https://bugzilla.redhat.com/show_bug.cgi?id=2158587
 %undefine _include_frame_pointers
 
-%global maj_ver 17
-%global min_ver 0
-%global patch_ver 6
+%bcond_with compat_build
+
+%global maj_ver 18
+%global min_ver 1
+%global patch_ver 2
 #global rc_ver 4
 %if %{with snapshot_build}
 %global maj_ver %{llvm_snapshot_version_major}
@@ -26,15 +28,21 @@
 
 %global crt_srcdir compiler-rt-%{compiler_rt_version}%{?rc_ver:rc%{rc_ver}}.src
 
+%if %{with compat_build}
+%global pkg_name compiler-rt%{maj_ver}
+%else
+%global pkg_name compiler-rt
+%endif
+
 # see https://sourceware.org/bugzilla/show_bug.cgi?id=25271
 %global optflags %(echo %{optflags} -D_DEFAULT_SOURCE)
 
 # see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93615
 %global optflags %(echo %{optflags} -Dasm=__asm__)
 
-Name:		compiler-rt
+Name:		%{pkg_name}
 Version:	%{compiler_rt_version}%{?rc_ver:~rc%{rc_ver}}%{?llvm_snapshot_version_suffix:~%{llvm_snapshot_version_suffix}}
-Release:	5%{?dist}
+Release:	1%{?dist}
 Summary:	LLVM "compiler-rt" runtime libraries
 
 License:	Apache-2.0 WITH LLVM-exception OR NCSA OR MIT
@@ -137,6 +145,9 @@ ln -s i386-redhat-linux-gnu %{buildroot}%{_prefix}/lib/clang/%{maj_ver}/lib/%{_t
 #%endif
 
 %changelog
+* Wed Apr 03 2024 Tulio Magno Quites Machado Filho <tuliom@redhat.com> - 18.1.2-1
+- Update to LLVM 18.1.2 (RHEL-27724)
+
 * Wed Jan 24 2024 Fedora Release Engineering <releng@fedoraproject.org> - 17.0.6-5
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild
 
diff --git a/sources b/sources
index 09c8a1d..995ce2c 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
-SHA512 (compiler-rt-17.0.6.src.tar.xz) = 56dc9d304dd4ba8d28179077dd99ca7c820ce26dbc70d33b2ba41769928adc900f7618d3efef756b2fc92e322d2f25dba49be966d6583d2d8f1fce9283a9cdf7
-SHA512 (compiler-rt-17.0.6.src.tar.xz.sig) = 3f1e21299fee7ab20fbeb61740049fb0ad61ceeaa8abec000c415320526dd84006d2d82161ff6ed63b33f0c1fd3937647e5eac5341cbeab602edaf70a8b875cd
+SHA512 (compiler-rt-18.1.2.src.tar.xz) = a17a80cac9050bd3349ad18e1e4d87002ae2667e42047fc6889c9dd10db493780a1dc05f0171ce0cc91291158e5bb7ee04f83e275b697e3e31fcb8e2f7aac297
+SHA512 (compiler-rt-18.1.2.src.tar.xz.sig) = b484728da7ac5074e37501a9407f8b05ca23cdc8a108ec7cfcf77e7964a7fcc0073db2a8268488d3266409a03d44a643b6a26663fe8b20ddade255575d75b9c8