On Fri, 13 May 2022 10:04:25 GMT, Magnus Ihse Bursie <i...@openjdk.org> wrote:
>> I'm back to work again. I also had a look but could not find something on >> Google, either. I then skimmed through the old GCC manuals. I found the >> first occurrence of `-gdwarf-4` in the manual for GCC 4.5.4 >> [here](https://gcc.gnu.org/onlinedocs/gcc-4.5.4/gcc.pdf): >> >> >> - gdwarf-version >> Produce debugging information in DWARF format (if that is supported). >> This >> is the format used by DBX on IRIX 6. The value of version may be either >> 2, 3 >> or 4; the default version is 2. >> >> While the manual for GCC 4.4.7 only mentions `-gdwarf-2`: >> >> -gdwarf-2 >> Produce debugging information in DWARF version 2 format (if that is >> supported). This is the format used by DBX on >> IRIX 6. With this option, GCC >> uses features of DWARF version 3 when they are useful; version 3 is >> upward >> compatible with version 2, but may still cause problems for older >> debuggers. >> >> >> The minimum accepted GCC version is currently 5.0 according to: >> https://github.com/openjdk/jdk/blob/d5ae3833b1b71eb84fadb69c0c92851400f8921c/doc/building.md?plain=1#L341-L344 >> >> This suggests that all our supported GCC versions should accept `-gdwarf-4`. > > @chhagedorn Thanks for the research. You provide more than necessary reason > to accept `-gdwarf-4` without any further checks. Great, thanks for confirming this and reviewing the build changes! ------------- PR: https://git.openjdk.java.net/jdk/pull/7126
