rump: use -fcommon for rump_tools #3960
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ssumpf
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GCC 10 has `-fno-common` as default which leads to multiple definitions of of symbols. Fixes genodelabs#3960
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I'm curious, may you share a bit of the background story of this issue? |
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@nfeske: https://binarydodo.wordpress.com/2016/05/09/investigating-linking-with-common-symbols-in-elf/ - otherwise a lot of multiple definitions of symbols will occur. |
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I was unable draw the connection to the practical problem you encountered. I was wondering about a possible runtime effect. Since you speak of gcc-10, I guess it is about a build problem with a more recent Linux distro. |
nfeske
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GCC 10 has `-fno-common` as default which leads to multiple definitions of of symbols. Fixes #3960
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Newer host gcc versions (10) set
-fno-commonas default, which leads to multiple definitions of otherwise common symbols. "The idea of COMMON symbols in Unix is to allow multiple external definitions of a same variable (in different compilation units) under a single common symbol under certain conditions." - which is used byrump_tools.The text was updated successfully, but these errors were encountered: