With that, and after talking to some other engineers, we decided it is
best, instead of whitelisting little endian arches, make the build
process to fail whenever this can occur, which, right now, after
investigation, is only related to how bitmaps are disposed in the
imgfile (and mapped using (char *) w/out any endian converstion).
So, currently a test like:
union un {
uint8_t u8;
uint16_t u16;
uint16_t u32;
uint16_t u64;
};
union un u = { .u64 = 0x7b };
printf("0x%x\n", (uint) u.u8);
printf("0x%x\n", (uint) u.u16);
printf("0x%x\n", (uint) u.u32);
printf("0x%x\n", (uint) u.u64);
And verifying that all 4 variables have the same "0x7b" contents is
enough to make sure we are running in a little endian arch.
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https://bugs.launchpad.net/bugs/1745155
Title:
o2image fails on s390x
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