Caffe-segnet：重新定义参数"编译器-绑定"

Question

已经尝试编译caffe-segnet好几天了，现在卡在这个错误上，我正在使用gccgcc (Ubuntu 4.8.5-4ubuntu8) 4.8.5 来编译caffe-segnet。我正在使用Cuda 9.0、cudnn v2和 opencv3.3.0，如 caffe 和 opencv 文档中提到的。禁用或不在Makefile.config中禁用cudnn不会更改此处提到的任何内容。

在此之前，我使用的是 cuda 10.0 和 cudnn 7.0 并删除了所有内容，因为在启动我的模型时有很多错误。以下是使用make all时的输出错误：

CXX src/caffe/common.cpp
/usr/bin/g++-4.8 src/caffe/common.cpp -pthread -fPIC -DNDEBUG -O2 -I/usr/include/python2.7 -I/usr/lib/python2.7/dist-packages/numpy/core/include -I/usr/local/include -I/usr/local/hdf5 -I/usr/local/hdf5/include -I.build_release/src -I./src -I./include -I/usr/local/cuda/include -Wall -Wno-sign-compare -std=c++11 -MMD -MP -pthread -fPIC -DNDEBUG -O2 -I/usr/include/python2.7 -I/usr/lib/python2.7/dist-packages/numpy/core/include -I/usr/local/include -I/usr/local/hdf5 -I/usr/local/hdf5/include -I.build_release/src -I./src -I./include -I/usr/local/cuda/include -Wall -Wno-sign-compare -c -o .build_release/src/caffe/common.o 2> .build_release/src/caffe/common.o.warnings.txt 
|| (cat .build_release/src/caffe/common.o.warnings.txt; exit 1)
CXX src/caffe/internal_thread.cpp
/usr/bin/g++-4.8 src/caffe/internal_thread.cpp -pthread -fPIC -DNDEBUG -O2 -I/usr/include/python2.7 -I/usr/lib/python2.7/dist-packages/numpy/core/include -I/usr/local/include -I/usr/local/hdf5 -I/usr/local/hdf5/include -I.build_release/src -I./src -I./include -I/usr/local/cuda/include -Wall -Wno-sign-compare -std=c++11 -MMD -MP -pthread -fPIC -DNDEBUG -O2 -I/usr/include/python2.7 -I/usr/lib/python2.7/dist-packages/numpy/core/include -I/usr/local/include -I/usr/local/hdf5 -I/usr/local/hdf5/include -I.build_release/src -I./src -I./include -I/usr/local/cuda/include -Wall -Wno-sign-compare -c -o .build_release/src/caffe/internal_thread.o 2> .build_release/src/caffe/internal_thread.o.warnings.txt 
|| (cat .build_release/src/caffe/internal_thread.o.warnings.txt; exit 1)
NVCC src/caffe/layers/upsample_layer.cu
/usr/local/cuda/bin/nvcc -D_FORCE_INLINES -ccbin=/usr/bin/g++-4.8 -Xcompiler -fPIC -DNDEBUG -O2 -I/usr/include/python2.7 -I/usr/lib/python2.7/dist-packages/numpy/core/include -I/usr/local/include -I/usr/local/hdf5 -I/usr/local/hdf5/include -I.build_release/src -I./src -I./include -I/usr/local/cuda/include -std=c++11 -ccbin=/usr/bin/g++-4.8 -Xcompiler -fPIC -DNDEBUG -O2 -I/usr/include/python2.7 -I/usr/lib/python2.7/dist-packages/numpy/core/include -I/usr/local/include -I/usr/local/hdf5 -I/usr/local/hdf5/include -I.build_release/src -I./src -I./include -I/usr/local/cuda/include  -M src/caffe/layers/upsample_layer.cu -o .build_release/cuda/src/caffe/layers/upsample_layer.d 
-odir .build_release/cuda/src/caffe/layers
nvcc fatal   : redefinition of argument 'compiler-bindir'
Makefile:544: recipe for target '.build_release/cuda/src/caffe/layers/upsample_layer.o' failed
make: *** [.build_release/cuda/src/caffe/layers/upsample_layer.o] Error 1

以及错误来自Makefile中的第 544 行：

...
@ cat $@.$(WARNS_EXT)
$(BUILD_DIR)/cuda/%.o: %.cu | $(ALL_BUILD_DIRS)
544>    @ echo NVCC $<
$(Q)$(CUDA_DIR)/bin/nvcc $(NVCCFLAGS) $(CUDA_ARCH) -M $< -o ${@:.o=.d} 
-odir $(@D)
...

请注意，我尝试使用 gcc 5 和 gcc 7 编译它，但发生了相同的错误！知道伙计们吗？

编辑1：我也把这个CUSTOM_CXX := /usr/bin/g++-4.8加到Makefile.config

Answer 1

由于没有人感到震惊，我最终找到了解决方案，因此导致错误是因为相同的参数被调用了两次，在我的Makefile中，我添加了这些代码行：

CXXFLAGS += -pthread -fPIC $(COMMON_FLAGS) $(WARNINGS) -std=c++11
NVCCFLAGS += -D_FORCE_INLINES -ccbin=$(CXX) -Xcompiler -fPIC $(COMMON_FLAGS) -std=c++11
LINKFLAGS += -pthread -fPIC $(COMMON_FLAGS) $(WARNINGS) -std=c++11

要避免此错误，/usr/include/c++/4.8/bits/c++0x_warning.h:32:2: error: #error This file requires compiler and library support for the ISO C++ 2011 standard. This support is currently experimental, and must be enabled with the -std=c++11 or -std=gnu++11 compiler options.

在完整构建标志的同一文件中，我们有相同的标志：

...
# Complete build flags.
COMMON_FLAGS += $(foreach includedir,$(INCLUDE_DIRS),-I$(includedir))
CXXFLAGS += -pthread -fPIC $(COMMON_FLAGS) $(WARNINGS)
NVCCFLAGS += -ccbin=$(CXX) -Xcompiler -fPIC $(COMMON_FLAGS)
# mex may invoke an older gcc that is too liberal with -Wuninitalized
...

我所做的是评论我添加的标志：

CXXFLAGS += -pthread -fPIC $(COMMON_FLAGS) $(WARNINGS) -std=c++11
#NVCCFLAGS += -D_FORCE_INLINES -ccbin=$(CXX) -Xcompiler -fPIC $(COMMON_FLAGS) -std=c++11
LINKFLAGS += -pthread -fPIC $(COMMON_FLAGS) $(WARNINGS) -std=c++11

并在完整的构建标志部分NVCCFLAGS中添加-std=c++11参数，结果是这样的：

...
# Complete build flags.
COMMON_FLAGS += $(foreach includedir,$(INCLUDE_DIRS),-I$(includedir))
CXXFLAGS += -pthread -fPIC $(COMMON_FLAGS) $(WARNINGS)
NVCCFLAGS += -ccbin=$(CXX) -Xcompiler -fPIC $(COMMON_FLAGS) -std=c++11
# mex may invoke an older gcc that is too liberal with -Wuninitalized
...

在编辑 Makefile 后执行make all之前，请确保执行make clean，否则会收到相同的错误！