RFR: 8017234: Hotspot should stop using mapfiles [v2]

[Magnus Ihse Bursie]

On Fri, 23 Feb 2024 13:54:36 GMT, Erik Joelsson <erikj at openjdk.org> wrote:

> > I just realized I could keep an extremely simplified linker script ("mapfile") for gcc, and thereby keeping the `@SUNWprivate_1.1` on the exported symbols, and keeping `__bss_start` and friends local. This further minimizes the difference to the existing libjvm.so for gcc builds.
> 
> Why do this just for GCC? Shouldn't this be for Linux as we are doing it for backwards compatibility with user JNI libraries.

Good point. I did not really consider the case of clang on linux, since this is a secondary option, and I did not believe keeping consistency there was important. But as you say, the fix is trivial and makes a lot of sense. I have now verified that the symbols look identical when compiling with clang, between this PR and the latest (and hopefully last!) update, and mainline.

-------------

PR Comment: https://git.openjdk.org/jdk/pull/17955#issuecomment-1964720104