Question

我一直在为Allwinner H2 SoC编写位烘烤食谱。这似乎是浮点单元兼容性的问题。这是编译错误日志（缩写路径和增加的换行符，以提高可读性）：

python3-scipy/1.3.3-r0/recipe-sysroot-native/[...]/gcc/arm-poky-linux-gnueabi/8.3.0/ld: error: build/lib.linux-x86_64-3.7/scipy/fftpack/_fftpack.cpython-37m-arm-linux-gnueabi.so uses VFP register arguments, build/temp.linux-x86_64-3.7/libfftpack.a(cffti1.o) does not
python3-scipy/1.3.3-r0/recipe-sysroot-native/[...]/gcc/arm-poky-linux-gnueabi/8.3.0/ld:: failed to merge target specific data of file build/temp.linux-x86_64-3.7/libfftpack.a(cffti1.o)

[...]

| error: Command "/home/marius/mender-orangepi-warrior/build/tmp/work/armv7vet2hf-neon-poky-linux-gnueabi/python3-scipy/1.3.3-r0/recipe-sysroot-native/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-gcc -Wall -g -march=armv7ve -mthumb -mfpu=neon -mfloat-abi=hard \
-fstack-protector-strong -D_FORTIFY_SOURCE=2 -Wformat -Wformat-security -Werror=format-security \
--sysroot=/home/marius/mender-orangepi-warrior/build/tmp/work/armv7vet2hf-neon-poky-linux-gnueabi/python3-scipy/1.3.3-r0/recipe-sysroot -shared -Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed -fstack-protector-strong -Wl,-z,relro,-z,now \
-L/home/marius/mender-orangepi-warrior/build/tmp/work/armv7vet2hf-neon-poky-linux-gnueabi/python3-scipy/1.3.3-r0/recipe-sysroot/usr/lib/python3.7/site-packages/numpy/core/lib build/temp.linux-x86_64-3.7/build/src.linux-x86_64-3.7/scipy/fftpack/_fftpackmodule.o \
build/temp.linux-x86_64-3.7/scipy/fftpack/src/zfft.o build/temp.linux-x86_64-3.7/scipy/fftpack/src/drfft.o build/temp.linux-x86_64-3.7/scipy/fftpack/src/zrfft.o build/temp.linux-x86_64-3.7/scipy/fftpack/src/zfftnd.o \
build/temp.linux-x86_64-3.7/build/src.linux-x86_64-3.7/scipy/fftpack/src/dct.o build/temp.linux-x86_64-3.7/build/src.linux-x86_64-3.7/scipy/fftpack/src/dst.o build/temp.linux-x86_64-3.7/build/src.linux-x86_64-3.7/build/src.linux-x86_64-3.7/scipy/fftpack/fortranobject.o \
-L/home/marius/mender-orangepi-warrior/build/tmp/work/armv7vet2hf-neon-poky-linux-gnueabi/python3-scipy/1.3.3-r0/recipe-sysroot/usr/lib -Lbuild/temp.linux-x86_64-3.7 -ldfftpack -lfftpack -lpython3.7m \
-lgfortran -o build/lib.linux-x86_64-3.7/scipy/fftpack/_fftpack.cpython-37m-arm-linux-gnueabi.so -Wl,--version-script=build/temp.linux-x86_64-3.7/link-version-scipy.fftpack._fftpack.map" failed with exit status 1
| ERROR: 'python3 setup.py build ' execution failed.

我试图通过在计算机配置中设置target_FPU =“ soft”，“ hard”和“ vfp-neon”来强制执行FPU软硬件处理。在所有情况下，编译都在同一步骤中崩溃。我进一步尝试了失败步骤的编译器标志，例如将-mfloat-abi更改为soft，hard和vfp-neon。没有一个能成功。

任何有关如何为该体系结构编译此配方的提示都将受到高度赞赏！

编辑：这是我要烤的食谱：meta-scipy

Answer 1

您看到的错误发生是因为fortran编译器未传递正确的浮点参数。我已经创建了pull request到meta-scipy来解决此问题，至少现在我可以为Raspberry Pi进行构建而无需强制进行软浮动。

Answer 2

这是一种解决方法，但最终可以编译此配方：通过更改DEFAULTTUNE禁用硬浮点ABI。此TUNE工作：

DEFAULTTUNE ?= "cortexa7t-neon"

如此处所述：https://github.com/gpanders/meta-scipy/issues/2#issuecomment-603266558

由于浮点单元兼容性问题，配方编译失败（我认为）

2 个答案: