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https://github.com/zealdocs/zeal.git
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Oleg Shparber
59 lines
1.9 KiB
CMake
59 lines
1.9 KiB
CMake
#
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# SetupHomebrew.cmake - Add Homebrew prefix to CMAKE_PREFIX_PATH on macOS
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#
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# SPDX-FileCopyrightText: Oleg Shparber, et al. <https://zealdocs.org>
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# SPDX-License-Identifier: MIT
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#
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# Makes Homebrew-installed dependencies discoverable via standard find_package()
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# without manual HINTS or per-call fallback path lookups.
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#
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function(setup_homebrew)
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if(NOT APPLE)
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return()
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endif()
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# If a vcpkg toolchain is active, defer to it — its triplet root drives search.
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if(CMAKE_TOOLCHAIN_FILE MATCHES "vcpkg")
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return()
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endif()
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# Prefer `brew --prefix` (handles non-standard installs); fall back to
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# the well-known paths per host architecture.
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find_program(_brew_executable brew)
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if(_brew_executable)
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execute_process(
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COMMAND "${_brew_executable}" --prefix
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OUTPUT_VARIABLE _brew_prefix
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OUTPUT_STRIP_TRAILING_WHITESPACE
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RESULT_VARIABLE _brew_rc
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)
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if(_brew_rc EQUAL 0 AND IS_DIRECTORY "${_brew_prefix}")
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set(_homebrew_prefix "${_brew_prefix}")
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endif()
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endif()
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if(NOT _homebrew_prefix)
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if(CMAKE_HOST_SYSTEM_PROCESSOR STREQUAL "arm64" AND IS_DIRECTORY "/opt/homebrew")
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set(_homebrew_prefix "/opt/homebrew")
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elseif(IS_DIRECTORY "/usr/local/Homebrew")
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set(_homebrew_prefix "/usr/local")
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endif()
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endif()
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if(NOT _homebrew_prefix)
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return()
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endif()
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list(PREPEND CMAKE_PREFIX_PATH "${_homebrew_prefix}")
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# libarchive is keg-only on Homebrew (macOS ships a stale version);
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# add its prefix so find_package(LibArchive) finds it without manual hints.
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if(IS_DIRECTORY "${_homebrew_prefix}/opt/libarchive")
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list(PREPEND CMAKE_PREFIX_PATH "${_homebrew_prefix}/opt/libarchive")
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endif()
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set(CMAKE_PREFIX_PATH "${CMAKE_PREFIX_PATH}" PARENT_SCOPE)
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message(NOTICE "Using Homebrew prefix ${_homebrew_prefix}")
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endfunction()
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