!82 [ClassicFlang] Add the support for classic flang.

From: @luofeng14 
Reviewed-by: @cf-zhao 
Signed-off-by: @cf-zhao

llvm.spec

@@ -1,5 +1,6 @@
 %bcond_without sys_llvm
 %bcond_without check
+%bcond_with classic_flang
 
 %global maj_ver 17
 %global min_ver 0
@@ -37,7 +38,7 @@
 
 Name:		%{pkg_name}
 Version:	%{maj_ver}.%{min_ver}.%{patch_ver}
-Release:	7
+Release:	8
 Summary:	The Low Level Virtual Machine
 
 License:	NCSA
@@ -64,6 +65,8 @@ Patch13: 	0013-Backport-Bitcode-Add-some-missing-GetTypeByID-failure-checks.patc
 Patch14: 	0014-Backport-X86-Inline-Skip-inline-asm-in-inlining-targ.patch
 Patch15: 	0015-Backport-ARM-Check-all-terms-in-emitPopInst-when-clearing-Res.patch
 Patch16: 	0016-Backport-ARM-Update-IsRestored-for-LR-based-on-all-returns-82.patch
+Patch17:        0017-Add-the-support-for-classic-flang.patch
+Patch18:        0018-Fix-declaration-definition-mismatch-for-classic-flang.patch
 
 BuildRequires:	binutils-devel
 BuildRequires:	cmake
@@ -222,9 +225,11 @@ cd _build
 	-DLLVM_LIBDIR_SUFFIX=64 \
 %else
 	-DLLVM_LIBDIR_SUFFIX= \
+%endif
+%if %{with classic_flang}
+        -DLLVM_ENABLE_CLASSIC_FLANG=ON \
 %endif
 	-DLLVM_INCLUDE_BENCHMARKS=OFF
-
 %ninja_build LLVM
 %ninja_build
 
@@ -346,6 +351,9 @@ LD_LIBRARY_PATH=%{buildroot}/%{install_libdir}  %{__ninja} check-all -C ./_build
 %{install_includedir}/llvm-gmock
 
 %changelog
+* Wed Apr 17 2024 luofeng <luofeng13@huawei.com> - 17.0.6-8
+- Add the support for classic flang
+
 * Fri Apr 12 2024 liyunfei <liyunfei33@huawei.com> - 17.0.6-7
 - Backport patch to fix CVE-2024-31852