Fix for compile errors in GCC 12 #824

vdobro · 2022-06-05T13:03:44Z

Currently it is impossible to compile openMVS with gcc 12 without the following fixes:

Add Common or IO to libraries to link against in some of the targets in /apps
Adding -fpermissive to Common because of a discarded const qualifier in Common/Types.inl:3062. An alternative would require all of its consumers to drop const qualifiers
linking against Eigen using its own supplied config for find_package
Adjusting to updated symbol and file names from openMVG

cdcseacave · 2022-06-05T17:28:58Z

apps/CMakeLists.txt

 ADD_SUBDIRECTORY(InterfaceCOLMAP)
 ADD_SUBDIRECTORY(InterfaceMetashape)
-ADD_SUBDIRECTORY(DensifyPointCloud)
+ADD_SUBDIRECTORY(InterfaceOpenMVG)


This 2 interfaces are deprecated, pls remove them;
OpenMVG has its own interface to OpenMVS
VisualSFM has accuracy issues, should not be used

cdcseacave · 2022-06-05T17:29:37Z

CMakeLists.txt

-if(EIGEN3_FOUND)
-	LIST(APPEND OpenMVS_EXTRA_INCLUDES ${EIGEN3_INCLUDE_DIR})
-	INCLUDE_DIRECTORIES(${EIGEN3_INCLUDE_DIR})
+find_package(Eigen3 3.4 REQUIRED)


pls test these chages with older linux distribution and windows and mac too

cdcseacave · 2022-06-05T17:30:58Z

apps/DensifyPointCloud/CMakeLists.txt

@@ -5,7 +5,7 @@ else()
 endif()
 FILE(GLOB LIBRARY_FILES_H "*.h" "*.inl")

-cxx_executable_with_flags(DensifyPointCloud "Apps" "${cxx_default}" "MVS;${OpenMVS_EXTRA_LIBS}" ${LIBRARY_FILES_C} ${LIBRARY_FILES_H})
+cxx_executable_with_flags(DensifyPointCloud "Apps" "${cxx_default}" "MVS;Common;${OpenMVS_EXTRA_LIBS}" ${LIBRARY_FILES_C} ${LIBRARY_FILES_H})


this should not be needed, Common is linked to MVS; pls find out why this is needed here and it worked fine will all linux distros till now

cdcseacave · 2022-06-05T17:31:07Z

apps/InterfaceCOLMAP/CMakeLists.txt

@@ -5,7 +5,7 @@ else()
 endif()
 FILE(GLOB LIBRARY_FILES_H "*.h" "*.inl")

-cxx_executable_with_flags(InterfaceCOLMAP "Apps" "${cxx_default}" "MVS;${OpenMVS_EXTRA_LIBS}" ${LIBRARY_FILES_C} ${LIBRARY_FILES_H})
+cxx_executable_with_flags(InterfaceCOLMAP "Apps" "${cxx_default}" "MVS;IO;${OpenMVS_EXTRA_LIBS}" ${LIBRARY_FILES_C} ${LIBRARY_FILES_H})


same as above

cdcseacave · 2022-06-05T17:31:50Z

apps/InterfaceOpenMVG/InterfaceOpenMVG.cpp

@@ -38,7 +38,9 @@
 #undef R2D
 #include <openMVG/sfm/sfm_data.hpp>
 #include <openMVG/sfm/sfm_data_io.hpp>
-#include <openMVG/image/image.hpp>
+#include <openMVG/image/image_io.hpp>


cool, but the interface should be disabled anyway

cdcseacave · 2022-06-05T17:32:25Z

build/Utils.cmake

@@ -451,7 +451,6 @@ macro(optimize_default_compiler_settings)
 	  add_extra_compiler_option(-Werror=sequence-point)
 	  add_extra_compiler_option(-Wformat)
 	  add_extra_compiler_option(-Werror=format-security -Wformat)
-	  add_extra_compiler_option(-Wstrict-prototypes)


pls explain

In comment below you can see that compiler is producing a warning:

cc1plus: warning: command-line option ‘-Wstrict-prototypes’ is valid for C/ObjC but not for C++

cdcseacave · 2022-06-05T17:33:25Z

libs/Common/CMakeLists.txt

@@ -13,6 +13,7 @@ endif()

 # Link its dependencies
 TARGET_LINK_LIBRARIES(Common ${Boost_LIBRARIES} ${OpenCV_LIBS})
+TARGET_COMPILE_OPTIONS(Common INTERFACE -fpermissive)


pls detail, I did not understand the comment from the PR; at line 3062 all looks fine to me:

fImage.write(cv::Mat::template ptr<const float>(--i), rowbytes);

Unfortunatelly either new version of OpenCV has some kind of a bug or GCC12 is behaving differently and selecting non const template version of a ptr function (line 713 of mat.inl.hpp) and though const qualifier is not respected for this. I can paste exact error message if you are able to help with that. I tried to solve this myself, but I am not so smart, so I removed this code, as I am not using it anywhere (PFM image files). As I understand -fpermissive will remove such restrictions.

[ 24%] Building CXX object libs/IO/CMakeFiles/IO.dir/OBJ.cpp.o cc1plus: warning: command-line option ‘-Wstrict-prototypes’ is valid for C/ObjC but not for C++ In file included from /home/jbialas/openMVS/libs/Common/Types.h:2789, from /home/jbialas/openMVS/libs/Common/Common.h:176, from /home/jbialas/openMVS/libs/IO/Common.h:18, from /home/jbialas/openMVS_build/libs/IO/CMakeFiles/IO.dir/cmake_pch.hxx:5, from <command-line>: /home/jbialas/openMVS/libs/Common/Types.inl: In instantiation of ‘bool SEACAVE::TImage<TYPE>::Save(const SEACAVE::String&) const [with TYPE = SEACAVE::TPixel<unsigned char>]’: /home/jbialas/openMVS/libs/IO/OBJ.cpp:77:39: required from here /home/jbialas/openMVS/libs/Common/Types.inl:3062:72: error: passing ‘const SEACAVE::TImage<SEACAVE::TPixel<unsigned char> >’ as ‘this’ argument discards qualifiers [-fpermissive] 3062 | fImage.write(cv::Mat::template ptr<const float>(--i), rowbytes); | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~ In file included from /usr/include/opencv4/opencv2/core/mat.hpp:3773, from /usr/include/opencv4/opencv2/core.hpp:58, from /usr/include/opencv4/opencv2/opencv.hpp:52, from /home/jbialas/openMVS/libs/Common/Types.h:143: /usr/include/opencv4/opencv2/core/mat.inl.hpp:713:6: note: in call to ‘_Tp* cv::Mat::ptr(int) [with _Tp = const float]’ 713 | _Tp* Mat::ptr(int y) | ^~~ make[2]: *** [libs/IO/CMakeFiles/IO.dir/build.make:237: libs/IO/CMakeFiles/IO.dir/OBJ.cpp.o] Error 1 make[1]: *** [CMakeFiles/Makefile2:405: libs/IO/CMakeFiles/IO.dir/all] Error 2 make: *** [Makefile:136: all] Error 2

@cdcseacave I'm having the same issue on Fedora 36 and gcc 12.1.1 20220507 (Red Hat 12.1.1-1) when building the v2.0.1 tag, with boost 1.76 and and latest vcglib.

OPENMVS_VERSION="2.0.1" # Configure CMake cmake "../third_party/openMVS-${OPENMVS_VERSION}" \ -DCMAKE_BUILD_TYPE=Release \ -DBUILD_SHARED_LIBS=OFF \ -DCMAKE_INSTALL_PREFIX=/opt/3dr \ -DBOOST_ROOT="../third_party/boost_1_76_0/stage" \ -DVCG_ROOT="../third_party/vcglib" \ -DBoost_USE_STATIC_LIBS=ON

Would be happy to provide more information so we can solve this!

alkavan · 2022-07-23T07:06:17Z

I've tried to build with OpenCV 3.4.18 and 4.6.0 that I compiled externally, and with OpenCV 4.5.5 that I have on my system, in all cases I still get that error.

I also tried to add this line:

TARGET_COMPILE_OPTIONS(Common INTERFACE -fpermissive)

to this file: libs/Common/CMakeLists.txt like suggested here, but that didn't seemed to help.

This does feel like a GCC 12 related error, since I know that last time I built successfully was on Fedora 35 and that was with GCC 11. I can't understand what exactly is going on, I did dig on the internet that this probably means that cv::Mat::template ptr<const float>(--i) missing a const qualifier...

@cdcseacave @bialasjaroslaw

Errors

In file included from ./openMVS-2.0.1/apps/TextureMesh/../../libs/MVS/../Common/Types.h:2789,
                 from ./openMVS-2.0.1/apps/TextureMesh/../../libs/MVS/../Common/Common.h:176,
                 from ./openMVS-2.0.1/apps/TextureMesh/../../libs/MVS/Common.h:42,
                 from ./openMVS-2.0.1/apps/TextureMesh/TextureMesh.cpp:32:
./openMVS-2.0.1/apps/TextureMesh/../../libs/MVS/../Common/Types.inl: In instantiation of ‘bool SEACAVE::TImage<TYPE>::Save(const SEACAVE::String&) const [with TYPE = SEACAVE::TColor<unsigned char>]’:
./openMVS-2.0.1/apps/TextureMesh/TextureMesh.cpp:327:13:   required from here
./openMVS-2.0.1/apps/TextureMesh/../../libs/MVS/../Common/Types.inl:3062:72: error: passing ‘const SEACAVE::TImage<SEACAVE::TColor<unsigned char> >’ as ‘this’ argument discards qualifiers [-fpermissive]
 3062 |                         fImage.write(cv::Mat::template ptr<const float>(--i), rowbytes);

In file included from ./openMVS-2.0.1/apps/InterfaceMetashape/../../libs/MVS/../Common/Types.h:2789,
                 from ./openMVS-2.0.1/apps/InterfaceMetashape/../../libs/MVS/../Common/Common.h:176,
                 from ./openMVS-2.0.1/apps/InterfaceMetashape/../../libs/MVS/Common.h:42,
                 from ./openMVS-2.0.1/apps/InterfaceMetashape/InterfaceMetashape.cpp:32:
./openMVS-2.0.1/apps/InterfaceMetashape/../../libs/MVS/../Common/Types.inl: In instantiation of ‘bool SEACAVE::TImage<TYPE>::Save(const SEACAVE::String&) const [with TYPE = SEACAVE::TPixel<unsigned char>]’:
./openMVS-2.0.1/apps/InterfaceMetashape/InterfaceMetashape.cpp:503:29:   required from here
./openMVS-2.0.1/apps/InterfaceMetashape/../../libs/MVS/../Common/Types.inl:3062:72: error: passing ‘const SEACAVE::TImage<SEACAVE::TPixel<unsigned char> >’ as ‘this’ argument discards qualifiers [-fpermissive]
 3062 |                         fImage.write(cv::Mat::template ptr<const float>(--i), rowbytes);

alkavan · 2022-07-23T07:23:03Z

Adding add_compile_options(-fpermissive) to the main CMakeLists.txt file of the project did do the job!

./openMVS-2.0.1/apps/TextureMesh/../../libs/MVS/../Common/Types.inl:3062:72: warning: passing ‘const SEACAVE::TImage<SEACAVE::TColor<unsigned char> >’ as ‘this’ argument discards qualifiers [-fpermissive]
 3062 |                         fImage.write(cv::Mat::template ptr<const float>(--i), rowbytes);

I specific issue seems to be here in /usr/include/opencv4/opencv2/core/mat.inl.hpp:

template<typename _Tp, int n> inline
const _Tp* Mat::ptr(const Vec<int, n>& idx) const
{
    CV_DbgAssert( elemSize() == sizeof(_Tp) );
    return Mat::ptr<_Tp>(idx.val);
}

That const qualifier at the end?

vdobro added 2 commits June 1, 2022 02:16

build: fixed compile/missing include errors in apps

9cfd329

build: Fixed deprecated resolution of Eigen as dependency

290709b

cdcseacave requested changes Jun 5, 2022

View reviewed changes

vdobro and others added 2 commits August 8, 2022 00:42

build: Removed deprecated interfaces from CMake build configuration

cce1599

Merge branch 'cdcseacave:develop' into develop

545bfa7

cdcseacave force-pushed the develop branch from 305b768 to 516306a Compare December 27, 2022 10:26

cdcseacave force-pushed the develop branch from 384da63 to 9609fd9 Compare November 9, 2024 10:27

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Fix for compile errors in GCC 12 #824

Fix for compile errors in GCC 12 #824

vdobro commented Jun 5, 2022

cdcseacave Jun 5, 2022

cdcseacave Jun 5, 2022

cdcseacave Jun 5, 2022

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bialasjaroslaw Jun 23, 2022

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bialasjaroslaw Jun 23, 2022 •

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alkavan Jul 20, 2022 •

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alkavan commented Jul 23, 2022

alkavan commented Jul 23, 2022 •

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Fix for compile errors in GCC 12 #824

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Fix for compile errors in GCC 12 #824

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alkavan commented Jul 23, 2022

Errors

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