openblas: Use flang to build lapack on clang64.

mingw-w64-openblas/PKGBUILD

@@ -6,7 +6,7 @@ pkgbase=mingw-w64-openblas
 pkgname=("${MINGW_PACKAGE_PREFIX}-openblas"
          $([[ "${CARCH}" == "i686" ]] || echo "${MINGW_PACKAGE_PREFIX}-openblas64"))
 pkgver=0.3.28
-pkgrel=1
+pkgrel=2
 pkgdesc="An optimized BLAS library based on GotoBLAS2 1.13 BSD, providing optimized blas, lapack, and cblas (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clangarm64')
@@ -24,7 +24,7 @@ depends=("${MINGW_PACKAGE_PREFIX}-gcc-libs"
 makedepends=("${MINGW_PACKAGE_PREFIX}-cc"
              "${MINGW_PACKAGE_PREFIX}-cmake"
              "${MINGW_PACKAGE_PREFIX}-ninja"
-             $([[ ${MINGW_PACKAGE_PREFIX} == *-clang-* ]] || echo "${MINGW_PACKAGE_PREFIX}-fc")
+             "${MINGW_PACKAGE_PREFIX}-fc"
              "dos2unix")
 options=('!buildflags')
 source=(https://github.com/OpenMathLib/OpenBLAS/releases/download/v${pkgver}/${_realname}-${pkgver}.tar.gz
@@ -64,10 +64,6 @@ _build_openblas() {
     _extra_config+=("-DCMAKE_BUILD_TYPE=Debug")
   fi
 
-  if [[ ${MINGW_PACKAGE_PREFIX} == *-clang-* ]]; then
-    _extra_config+=("-DC_LAPACK=ON")
-  fi
-
   if [[ ${CARCH} == aarch64 ]]; then
     # Clang wasn't able to compile all the kernels inside the arm64 folder,
     # Enable only the cores known to run Windows on ARM
@@ -76,12 +72,18 @@ _build_openblas() {
     _extra_config+=("-DTARGET=CORE2" "-DDYNAMIC_ARCH=ON")
   fi
 
+  if [[ ${MINGW_PACKAGE_PREFIX} == *-clang-* ]]; then
+    _extra_config+=("-DOpenMP_Fortran_FLAGS=-fopenmp" "-DOpenMP_Fortran_LIB_NAMES=omp")
+    export FFLAGS="-I${MINGW_PREFIX}/include"
+  fi
+
   MSYS2_ARG_CONV_EXCL="-DCMAKE_INSTALL_PREFIX=" \
   ${MINGW_PREFIX}/bin/cmake \
     -G"Ninja" \
     -DCMAKE_INSTALL_PREFIX=${MINGW_PREFIX} \
     -DBUILD_SHARED_LIBS=ON \
     -DBUILD_STATIC_LIBS=ON \
+    -DBUILD_TESTING=OFF \
     -DUSE_THREAD=ON \
     -DNUM_THREADS=64 \
     -DUSE_OPENMP=ON \
@@ -108,11 +110,15 @@ build() {
 
 check() {
   cd "${srcdir}"/build-${MSYSTEM}-32
-  ctest
+  ${MINGW_PREFIX}/bin/cmake -DBUILD_TESTING=ON ../${_realname}-${pkgver}
+  ${MINGW_PREFIX}/bin/cmake --build .
+  ${MINGW_PREFIX}/bin/ctest
 
   if [ "${CARCH}" != "i686" ]; then
-    cd "${srcdir}"/build-${MSYSTEM}-64
+    cd "${srcdir}/build-${MSYSTEM}-64"
-    ctest
+    ${MINGW_PREFIX}/bin/cmake -DBUILD_TESTING=ON ../${_realname}-${pkgver}
+    ${MINGW_PREFIX}/bin/cmake --build .
+    ${MINGW_PREFIX}/bin/ctest
   fi
 }
 
@@ -123,6 +129,11 @@ package_openblas() {
 
   DESTDIR=${pkgdir} ${MINGW_PREFIX}/bin/cmake --install .
 
+  local PREFIX_WIN=$(cygpath -wm ${MINGW_PREFIX})
+  for _f in "${pkgdir}${MINGW_PREFIX}"/lib/cmake/OpenBLAS/*.cmake; do
+    sed -e "s|${PREFIX_WIN}|\$\{_IMPORT_PREFIX\}|g" -i ${_f}
+  done
+
   # Install License
   install -Dm0644 "${srcdir}"/${_realname}-${pkgver}/LICENSE "${pkgdir}"${MINGW_PREFIX}/share/licenses/${_realname}/LICENSE
   install -Dm0644 "${srcdir}"/${_realname}-${pkgver}/lapack-netlib/LICENSE "${pkgdir}"${MINGW_PREFIX}/share/licenses/${_realname}/LICENSE-lapack
@@ -138,6 +149,11 @@ package_openblas64() {
 
   DESTDIR=${pkgdir} ${MINGW_PREFIX}/bin/cmake --install .
 
+  local PREFIX_WIN=$(cygpath -wm ${MINGW_PREFIX})
+  for _f in "${pkgdir}${MINGW_PREFIX}"/lib/cmake/OpenBLAS64/*.cmake; do
+    sed -e "s|${PREFIX_WIN}|\$\{_IMPORT_PREFIX\}|g" -i ${_f}
+  done
+
   # Install License
   install -Dm0644 "${srcdir}"/${_realname}-${pkgver}/LICENSE "${pkgdir}"${MINGW_PREFIX}/share/licenses/${_realname}64/LICENSE
   install -Dm0644 "${srcdir}"/${_realname}-${pkgver}/lapack-netlib/LICENSE "${pkgdir}"${MINGW_PREFIX}/share/licenses/${_realname}64/LICENSE-lapack