The entry's Exec is the built binary's absolute path, so it always launches what was last built -- and moving the build directory breaks it, which is the price of having no install step. An install() rule would make a second copy that can diverge; a documented cp would need the binary on PATH, which it is not. The target writes the entry and both icons under XDG_DATA_HOME, refreshes the desktop and icon caches when the tools are there, and runs desktop-file-validate as a hard failure -- the shell ignores a malformed entry in silence, so the failure belongs at the moment the entry is asked for. It prints the three paths it wrote, which is the uninstall instructions. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
62 lines
2.6 KiB
CMake
62 lines
2.6 KiB
CMake
# SPDX-License-Identifier: MIT
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#
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# The `desktop-entry` target's body. Copies the generated entry and the two app icons into
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# $XDG_DATA_HOME, validates the entry, refreshes the caches that make the shell notice, and
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# prints every path it wrote.
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#
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# This runs only when the target is named. The project deliberately has no install step -- that
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# is the stated reason its icons are a GResource -- and a target that does nothing until asked
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# preserves that while still producing a working entry.
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#
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# Expects -DENTRY=, -DICON= and -DSYMBOLIC= on the command line.
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if(DEFINED ENV{XDG_DATA_HOME} AND NOT "$ENV{XDG_DATA_HOME}" STREQUAL "")
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set(data_home "$ENV{XDG_DATA_HOME}")
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else()
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set(data_home "$ENV{HOME}/.local/share")
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endif()
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set(apps_dir "${data_home}/applications")
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set(icon_dir "${data_home}/icons/hicolor/scalable/apps")
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set(sym_dir "${data_home}/icons/hicolor/symbolic/apps")
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# The icons are copied from the source tree rather than extracted from the GResource: the same
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# two files serve both the in-binary resource and the installed theme, so there is one copy to
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# edit. `file(COPY)` creates the directories.
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file(COPY "${ENTRY}" DESTINATION "${apps_dir}")
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file(COPY "${ICON}" DESTINATION "${icon_dir}")
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file(COPY "${SYMBOLIC}" DESTINATION "${sym_dir}")
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get_filename_component(entry_name "${ENTRY}" NAME)
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get_filename_component(icon_name "${ICON}" NAME)
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get_filename_component(sym_name "${SYMBOLIC}" NAME)
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# Validated here rather than left to the shell, which ignores a malformed entry in silence: the
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# failure belongs at the moment the entry is asked for.
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find_program(DESKTOP_FILE_VALIDATE desktop-file-validate)
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if(DESKTOP_FILE_VALIDATE)
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execute_process(COMMAND "${DESKTOP_FILE_VALIDATE}" "${apps_dir}/${entry_name}"
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RESULT_VARIABLE validate_result)
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if(NOT validate_result EQUAL 0)
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message(FATAL_ERROR "desktop-file-validate rejected ${apps_dir}/${entry_name}")
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endif()
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message(STATUS "desktop-file-validate: ok")
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else()
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message(STATUS "desktop-file-validate: not on PATH, entry not validated")
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endif()
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find_program(UPDATE_DESKTOP_DATABASE update-desktop-database)
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if(UPDATE_DESKTOP_DATABASE)
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execute_process(COMMAND "${UPDATE_DESKTOP_DATABASE}" "${apps_dir}")
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endif()
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find_program(GTK4_UPDATE_ICON_CACHE gtk4-update-icon-cache)
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if(GTK4_UPDATE_ICON_CACHE)
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execute_process(COMMAND "${GTK4_UPDATE_ICON_CACHE}" -f -t "${data_home}/icons/hicolor")
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endif()
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# Printed because there is no uninstall target: undoing this is these three paths.
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message(STATUS "wrote ${apps_dir}/${entry_name}")
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message(STATUS "wrote ${icon_dir}/${icon_name}")
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message(STATUS "wrote ${sym_dir}/${sym_name}")
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