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fix: WITHOUT_FACERECOGNITION build flag

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to avoid double loading of protobuf, implicitly loaded by opencv,
we need to deactivate the build of two face detection plugins that
use opencv (which loads protobuf implicitly). This fixes bug #185
This commit is contained in:
Jaromil
2025-11-27 00:11:16 +01:00
parent 27af2abfb4
commit 7a044cba04
4 changed files with 45 additions and 20 deletions
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11
BUILD.md
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@@ -10,6 +10,10 @@ The presence of optional libraries on the system will trigger compilation of ext
+ [Cairo](http://cairographics.org) required for cairo- filters and mixers + [Cairo](http://cairographics.org) required for cairo- filters and mixers
## Optional build flags
+ `-DWITHOUT_FACERECOGNITION=ON` - Disable face recognition plugins (facedetect and facebl0r) to avoid protobuf conflicts with applications like MLT
It is recommended to use a separate `build` sub-folder. It is recommended to use a separate `build` sub-folder.
``` ```
@@ -18,6 +22,13 @@ cd build && cmake ../
make make
``` ```
To disable face recognition plugins (recommended when using with MLT):
```
mkdir -p build
cd build && cmake -DWITHOUT_FACERECOGNITION=ON ../
make
```
Also ninja and nmake are supported through cmake: Also ninja and nmake are supported through cmake:
``` ```
cmake -G 'Ninja' ../ cmake -G 'Ninja' ../

2
CMakeLists.txt
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@@ -8,6 +8,8 @@ set (VERSION 2.5.1)
include(GNUInstallDirs) include(GNUInstallDirs)
option (WITHOUT_OPENCV "Disable plugins dependent upon OpenCV" OFF) option (WITHOUT_OPENCV "Disable plugins dependent upon OpenCV" OFF)
option (WITHOUT_FACERECOGNITION "Disable facedetect plugin to avoid protobuf conflicts" OFF)
if (NOT WITHOUT_OPENCV) if (NOT WITHOUT_OPENCV)
find_package (OpenCV) find_package (OpenCV)
endif () endif ()

24
src/filter/facebl0r/CMakeLists.txt
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@@ -1,13 +1,19 @@
set (SOURCES facebl0r.cpp) # facebl0r filter - requires OpenCV (and protobuf)
set (TARGET facebl0r) # This filter can cause conflicts with applications that also use protobuf
# such as MLT, so it can be disabled with -DWITHOUT_FACERECOGNITION=ON
if (MSVC) if (OpenCV_FOUND AND NOT WITHOUT_FACERECOGNITION)
set (SOURCES facebl0r.cpp)
set (TARGET facebl0r)
if (MSVC)
set (SOURCES ${SOURCES} ${FREI0R_DEF}) set (SOURCES ${SOURCES} ${FREI0R_DEF})
endif (MSVC) endif (MSVC)
include_directories(${OpenCV_INCLUDE_DIRS}) include_directories(${OpenCV_INCLUDE_DIRS})
add_library (${TARGET} MODULE ${SOURCES}) add_library (${TARGET} MODULE ${SOURCES})
set_target_properties (${TARGET} PROPERTIES PREFIX "") set_target_properties (${TARGET} PROPERTIES PREFIX "")
target_link_libraries(${TARGET} ${OpenCV_LIBS}) target_link_libraries(${TARGET} ${OpenCV_LIBS})
install (TARGETS ${TARGET} LIBRARY DESTINATION ${LIBDIR}) install (TARGETS ${TARGET} LIBRARY DESTINATION ${LIBDIR})
endif()

24
src/filter/facedetect/CMakeLists.txt
View File

@@ -1,13 +1,19 @@
set (SOURCES facedetect.cpp) # facedetect filter - requires OpenCV (and protobuf)
set (TARGET facedetect) # This filter can cause conflicts with applications that also use protobuf
# such as MLT, so it can be disabled with -DWITHOUT_FACERECOGNITION=ON
if (MSVC) if (OpenCV_FOUND AND NOT WITHOUT_FACERECOGNITION)
set (SOURCES facedetect.cpp)
set (TARGET facedetect)
if (MSVC)
set (SOURCES ${SOURCES} ${FREI0R_DEF}) set (SOURCES ${SOURCES} ${FREI0R_DEF})
endif (MSVC) endif (MSVC)
include_directories(${OpenCV_INCLUDE_DIRS}) include_directories(${OpenCV_INCLUDE_DIRS})
add_library (${TARGET} MODULE ${SOURCES}) add_library (${TARGET} MODULE ${SOURCES})
set_target_properties (${TARGET} PROPERTIES PREFIX "") set_target_properties (${TARGET} PROPERTIES PREFIX "")
target_link_libraries(${TARGET} ${OpenCV_LIBS}) target_link_libraries(${TARGET} ${OpenCV_LIBS})
install (TARGETS ${TARGET} LIBRARY DESTINATION ${LIBDIR}) install (TARGETS ${TARGET} LIBRARY DESTINATION ${LIBDIR})
endif()