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[build] Remove cmake Java support (#8952)

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This is increasingly difficult to maintain, and has very limited
benefit. Modern coprocessors with enough horsepower to run Java
applications can use the Gradle or Bazel build systems instead.
This commit is contained in:
Peter Johnson
2026-06-05 15:05:09 -07:00
committed by GitHub
parent d941be905e
commit 96fb033deb
42 changed files with 13 additions and 1238 deletions
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59
CMakeLists.txt
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@@ -63,9 +63,7 @@ set(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/lib")
set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
# Options for building certain parts of the repo. Everything is built by default.
option(BUILD_SHARED_LIBS "Build with shared libs (needed for JNI)" ON)
option(WITH_JAVA "Include Java and JNI in the build" OFF)
option(WITH_JAVA_SOURCE "Build Java source jars" ${WITH_JAVA})
option(BUILD_SHARED_LIBS "Build with shared libs" ON)
option(WITH_DOCS "Build Doxygen docs (needs Git for versioning)" OFF)
cmake_dependent_option(
DOCS_WARNINGS_AS_ERRORS
@@ -78,13 +76,6 @@ option(WITH_CSCORE "Build cscore (needs OpenCV)" ON)
option(WITH_NTCORE "Build ntcore" ON)
option(WITH_WPICAL "Build wpical" OFF)
option(WITH_WPIMATH "Build wpimath" ON)
cmake_dependent_option(
WITH_WPIUNITS
"Build wpiunits"
ON
WITH_JAVA
OFF
)
option(WITH_WPILIB "Build hal, wpilibc/j, and developerRobot (needs OpenCV)" ON)
option(WITH_EXAMPLES "Build examples" OFF)
option(WITH_TESTS "Build unit tests (requires internet connection)" ON)
@@ -98,26 +89,9 @@ option(USE_SYSTEM_LIBUV "Use system libuv" OFF)
option(USE_SYSTEM_EIGEN "Use system eigen" OFF)
option(USE_LINKED_AVAHI "Use directly linked Avahi instead of loading at runtime" OFF)
# Options for location of OpenCV Java.
set(OPENCV_JAVA_INSTALL_DIR "" CACHE PATH "Location to search for the OpenCV jar file")
# Options for compilation flags.
option(NO_WERROR "Disable -Werror flag during compilation" OFF)
if(NOT WITH_JAVA OR NOT WITH_CSCORE)
if(NOT "${OPENCV_JAVA_INSTALL_DIR}" STREQUAL "")
message(
WARNING
"
WARNING: OpenCV Java dir set but java is not enabled!
It will be ignored.
"
)
endif()
endif()
wpilib_config(OPTIONS WITH_JAVA REQUIRES BUILD_SHARED_LIBS)
wpilib_config(OPTIONS WITH_SIMULATION_MODULES REQUIRES BUILD_SHARED_LIBS WITH_WPILIB WITH_NTCORE)
wpilib_config(OPTIONS WITH_CSCORE REQUIRES WITH_NTCORE)
@@ -126,17 +100,7 @@ wpilib_config(OPTIONS WITH_GUI REQUIRES WITH_NTCORE WITH_WPIMATH)
wpilib_config(OPTIONS WITH_WPILIB REQUIRES WITH_NTCORE WITH_WPIMATH)
wpilib_config(OPTIONS WITH_WPIMATH WITH_JAVA REQUIRES WITH_WPIUNITS)
set(include_dest include)
set(java_lib_dest java)
if(WITH_JAVA OR WITH_JAVA_SOURCE)
set(CMAKE_JAVA_COMPILE_FLAGS "-encoding" "UTF8" "-Xlint:unchecked" "-proc:full")
find_package(Java REQUIRED COMPONENTS Development)
if(NOT ANDROID)
find_package(JNI REQUIRED COMPONENTS JVM)
endif()
endif()
if(WITH_DOCS)
find_package(Doxygen REQUIRED)
@@ -283,13 +247,8 @@ endif()
set(FILENAME_DEP_REPLACE "get_filename_component(SELF_DIR \"$\{CMAKE_CURRENT_LIST_FILE\}\" PATH)")
set(SELF_DIR "$\{SELF_DIR\}")
set(WPIUNITS_DEP_REPLACE_IMPL "find_dependency(wpiunits)")
set(WPIANNOTATIONS_DEP_REPLACE_IMPL "find_dependency(wpiannotations)")
set(WPIUTIL_DEP_REPLACE "find_dependency(wpiutil)")
set(DATALOG_DEP_REPLACE "find_dependency(datalog)")
if(WITH_JAVA)
add_subdirectory(wpiannotations)
endif()
add_subdirectory(wpiutil)
@@ -303,20 +262,10 @@ if(WITH_NTCORE)
endif()
if(WITH_WPIMATH)
if(WITH_JAVA)
set(WPIUNITS_DEP_REPLACE ${WPIUNITS_DEP_REPLACE_IMPL})
add_subdirectory(wpiunits)
endif()
set(WPIMATH_DEP_REPLACE "find_dependency(wpimath)")
add_subdirectory(wpimath)
endif()
if(WITH_WPIUNITS AND NOT WITH_WPIMATH)
# In case of building wpiunits standalone
set(WPIUNITS_DEP_REPLACE ${WPIUNITS_DEP_REPLACE_IMPL})
add_subdirectory(wpiunits)
endif()
if(WITH_GUI)
add_subdirectory(fields)
add_subdirectory(thirdparty/imgui_suite)
@@ -347,16 +296,10 @@ endif()
if(WITH_WPILIB)
set(APRILTAG_DEP_REPLACE "find_dependency(apriltag)")
set(COMMANDSV3_DEP_REPLACE "find_dependency(commandsv3)")
set(WPILIBC_DEP_REPLACE "find_dependency(wpilibc)")
if(WITH_JAVA)
set(WPILIBJ_DEP_REPLACE "find_dependency(wpilibj)")
endif()
set(COMMAND_DEP_REPLACE "find_dependency(commandsv2)")
add_subdirectory(apriltag)
add_subdirectory(wpilibj)
add_subdirectory(wpilibc)
add_subdirectory(commandsv3) # must be after wpilibj
add_subdirectory(commandsv2)
add_subdirectory(romiVendordep)
add_subdirectory(xrpVendordep)