add known issues

Author: grisuthedragon

.github/workflows/build-msys2.yml

@@ -82,7 +82,7 @@ jobs:
         -D CMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}
         -D CMAKE_INSTALL_PREFIX=${{github.workspace}}/lapack_install
         -D SLICOT_TESTING:BOOL=ON
-        -D SLICOT_BUILD_SHARED_LIBS:BOOL=${{ matrix.os.fortran == 'flang' && 'OFF' || 'ON' }}
+        -D BUILD_SHARED_LIBS:BOOL=${{ matrix.os.fortran == 'flang' && 'OFF' || 'ON' }}
         -D CMAKE_EXE_LINKER_FLAGS="-Wl,--stack=2097152"
 
 

.github/workflows/build-unix.yml

@@ -96,7 +96,7 @@ jobs:
         -D CMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}
         -D CMAKE_INSTALL_PREFIX=${{github.workspace}}/lapack_install
         -D SLICOT_TESTING:BOOL=ON
-        -D SLICOT_BUILD_SHARED_LIBS:BOOL=ON
+        -D BUILD_SHARED_LIBS:BOOL=ON
 
     - name: Build
       # Execute tests defined by the CMake configuration.

CMakeLists.txt

@@ -172,7 +172,7 @@ MESSAGE(STATUS "CMAKE_Fortran_FLAGS_RELEASE:  ${CMAKE_Fortran_FLAGS_RELEASE}")
 MESSAGE(STATUS "BLAS Libraries: ${BLAS_LIBRARIES}")
 MESSAGE(STATUS "LAPACK Libraries: ${LAPACK_LIBRARIES}")
 MESSAGE(STATUS "Build Type: ${CMAKE_BUILD_TYPE}")
-MESSAGE(STATUS "Debug: ${DEBUG}")
+MESSAGE(STATUS "CMAKE_BUILD_TYPE: ${CMAKE_BUILD_TYPE}")
 MESSAGE(STATUS "Shared Libs: ${BUILD_SHARED_LIBS}")
 MESSAGE(STATUS "---------------------------------------------")
 

KNOWN_ISSUES.md

@@ -0,0 +1,28 @@
+Known Issues
+============
+
+Last Updated: April, 25th 2025
+
+Failing test with Flang on Windows / MSYS2
+------------------------------------------
+
+The tests for the routines
+
+* `UD01DB`
+* `UD01ND`
+
+fail if SLICOT is compiled using SHARED libraries. In general
+these two routines will not work with SLICOT as shared library 
+under Windows if it is compiled with FLang. 
+
+The behavior was observed using 
+```shell 
+$ flang --version
+flang version 19.1.7
+Target: x86_64-w64-windows-gnu
+Thread model: posix
+InstalledDir: C:/msys64/clang64/bin
+```
+
+The bug is known to LLVM community: https://github.com/llvm/llvm-project/issues/69952
+