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build: drop the pkg-config requirement from the Windows build (#15469)

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The FFmpeg camera view port made pkg-config a required build tool on
Windows. Windows does not ship one, so every Windows developer has to
install it before the build will configure:

  Could NOT find PkgConfig (missing: PKG_CONFIG_EXECUTABLE)
  Call Stack (most recent call first):
    CMakeLists.txt:480 (find_package)

Nothing on Windows needs it. FFmpeg there is a prebuilt zip unpacked
into the deps prefix, whose DLLs the top level CMakeLists already names
by exact soname. The version is fixed before configure runs, so
find_library against that prefix does the job, as on macOS.

Also drops the CI step that installed pkg-config, gated on !SELF_HOSTED
so it never ran on self-hosted runners, and re-comments the if(WIN32)
block that #15234 uncommented only for that find_package.
This commit is contained in:
Kris Austin
2026-08-31 20:19:58 -05:00
committed by GitHub
parent 5436e422b9
commit 9933cab59f
3 changed files with 14 additions and 10 deletions
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12
src/slic3r/CMakeLists.txt
View File

@@ -915,6 +915,18 @@ if (APPLE)
endif ()
target_link_libraries(libslic3r_gui ${LIBAVCODEC_LIBRARY} ${LIBSWSCALE_LIBRARY} ${LIBAVUTIL_LIBRARY})
target_include_directories(libslic3r_gui SYSTEM PRIVATE ${CMAKE_PREFIX_PATH}/include)
elseif (WIN32)
# Prebuilt shared FFmpeg from the deps install. Windows has no pkg-config,
# so resolve the import libraries out of the deps prefix directly; the DLLs
# are copied next to the executable by the top level CMakeLists.
find_library(LIBAVCODEC_LIBRARY NAMES avcodec PATHS ${CMAKE_PREFIX_PATH}/lib NO_DEFAULT_PATH)
find_library(LIBSWSCALE_LIBRARY NAMES swscale PATHS ${CMAKE_PREFIX_PATH}/lib NO_DEFAULT_PATH)
find_library(LIBAVUTIL_LIBRARY NAMES avutil PATHS ${CMAKE_PREFIX_PATH}/lib NO_DEFAULT_PATH)
if (NOT LIBAVCODEC_LIBRARY OR NOT LIBSWSCALE_LIBRARY OR NOT LIBAVUTIL_LIBRARY)
message(FATAL_ERROR "FFmpeg (avcodec/swscale/avutil) not found under ${CMAKE_PREFIX_PATH}/lib. Rebuild the deps.")
endif ()
target_link_libraries(libslic3r_gui ${LIBAVCODEC_LIBRARY} ${LIBSWSCALE_LIBRARY} ${LIBAVUTIL_LIBRARY})
target_include_directories(libslic3r_gui SYSTEM PRIVATE ${CMAKE_PREFIX_PATH}/include)
else ()
pkg_check_modules(LIBAV REQUIRED IMPORTED_TARGET
libavcodec