2024-04-09 02:15:54 +08:00
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SET(VCPKG_POLICY_EMPTY_PACKAGE enabled)
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# Due to the interaction between BLAS and LAPACK, we need to choose implementations consistent with
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# each other.
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#
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# First, if we are on Apple, we use the Accelerate framework.
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#
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# Then, we prefer to use openblas and lapack-reference for blas and lapack, respectively, but
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# sometimes are unable.
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#
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# If we are on Windows and arm or uwp, that we use gfortran as our fortran compiler creates an issue
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# because there is no available libgfortran. This means ew can't use lapack-reference at all.
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#
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# If we are on Windows and static, there is a linking problem caused by static gfortran in the same
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# link as openblas, so we have to use the blas implementation from lapack-reference.
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#
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# That results in roughly the following decision tree:
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#
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# no_libgfortran = (uwp || (windows && arm))
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# can_link_mixed_static_libgfortran = !windows || !static
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#
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# if (no_libgfortran) {
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# return {
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# "blas": "openblas",
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# "lapack": "clapack"
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# };
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# } else if (can_link_mixed_static_libgfortran) {
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# return {
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# "blas": "openblas",
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# "lapack": "lapack-reference[noblas]"
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# };
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# } else {
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# return {
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# "blas": "lapack-reference[blas]",
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# "lapack": "lapack-reference[blas]"
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# };
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# }
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#
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# Scoping this to just the 'can use openblas' question, we get:
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# uwp || (windows && arm) || !windows || !static
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# and for lapack-reference[blas], the DeMorgan'd inverse of that:
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# !uwp && !(windows && arm) && windows && static
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if(VCPKG_TARGET_IS_OSX OR VCPKG_TARGET_IS_IOS)
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# Use Apple's accelerate framework where available
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set(BLA_VENDOR Apple)
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set(requires "")
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set(libs "-framework Accelerate")
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set(cflags "-framework Accelerate")
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elseif(VCPKG_TARGET_IS_UWP
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OR (VCPKG_TARGET_IS_WINDOWS AND VCPKG_TARGET_ARCHITECTURE MATCHES "arm")
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OR NOT VCPKG_TARGET_IS_WINDOWS
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OR NOT (VCPKG_LIBRARY_LINKAGE STREQUAL "static"))
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set(BLA_VENDOR OpenBLAS)
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set(requires openblas)
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else()
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set(BLA_VENDOR Generic)
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set(requires "blas-reference")
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endif()
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configure_file("${CMAKE_CURRENT_LIST_DIR}/blas.pc.in" "${CURRENT_PACKAGES_DIR}/lib/pkgconfig/blas.pc" @ONLY)
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if(NOT VCPKG_BUILD_TYPE)
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configure_file("${CMAKE_CURRENT_LIST_DIR}/blas.pc.in" "${CURRENT_PACKAGES_DIR}/debug/lib/pkgconfig/blas.pc" @ONLY)
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endif()
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if(VCPKG_LIBRARY_LINKAGE STREQUAL "static")
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set(BLA_STATIC ON)
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else()
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set(BLA_STATIC OFF)
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endif()
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configure_file("${CMAKE_CURRENT_LIST_DIR}/vcpkg-cmake-wrapper.cmake.in" "${CURRENT_PACKAGES_DIR}/share/blas/vcpkg-cmake-wrapper.cmake" @ONLY)
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