gdb 8.1 added an optional dependency on dev-libs/mpfr (in gdb/configure.ac) with this NEWS item: * GDB now uses the GNU MPFR library, if available, to emulate target floating-point arithmetic during expression evaluation when the target uses different floating-point formats than the host. At least version 3.1 of GNU MPFR is required. But this was not accounted for in the 8.1 bump for the package. The default in configure.ac is autodetection, thus we now have an automagic dependency (albeit quite likely mpfr is there on the system or even indirect deps). Please make it explicit with --with-mpfr and a mpfr:= dep (also guaranteeing rebuilds on mpfr ABI change, which have happened recently) or a USE flag and $(use_with ...). I'd personal choose the former (forced dep) if it's pulled in indirectly anyways quite likely, but might be useful to not have it for GDBserver-only use cases or something.
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=ddc1ddb8bf51e234d63c744d84eb306ecc6d2139 commit ddc1ddb8bf51e234d63c744d84eb306ecc6d2139 Author: Andreas K. Hüttel <dilfridge@gentoo.org> AuthorDate: 2018-06-23 15:41:29 +0000 Commit: Andreas K. Hüttel <dilfridge@gentoo.org> CommitDate: 2018-06-23 15:43:17 +0000 sys-devel/gdb: Add dependency on dev-libs/mpfr Closes: https://bugs.gentoo.org/652146 Package-Manager: Portage-2.3.40, Repoman-2.3.9 sys-devel/gdb/gdb-8.1-r1.ebuild | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
# scanelf -qF "%F: %n" $(qlist sys-devel/gdb | sort) | grep -i mpfr /usr/bin/gdb: libreadline.so.7,libz.so.1,libdl.so.2,libncursesw.so.6,libpthread.so.0,libm.so.6,libpython3.6.so.1.0,libexpat.so.1,liblzma.so.5,libmpfr.so.6,libc.so.6,ld-linux-x86-64.so.2 # grep client sys-devel/gdb/metadata.xml <flag name="client">Install the main "gdb" program (most people want this)</flag> So this dependency should be conditional on USE="client", since /usr/bin/gdb is the only file linked against libmpfr.so.
(In reply to Arfrever Frehtes Taifersar Arahesis from comment #2) > So this dependency should be conditional on USE="client", since /usr/bin/gdb > is the only file linked against libmpfr.so. Can you attach patch to the ebuild?
Created attachment 538022 [details, diff] Patch Passing --with-mpfr is a mistake. configure.ac contains: AC_ARG_WITH(mpfr, [AS_HELP_STRING([--with-mpfr=PATH], [specify prefix directory for installed MPFR package. Equivalent to --with-mpfr-include=PATH/include plus --with-mpfr-lib=PATH/lib])]) AC_ARG_WITH(mpfr-include, [AS_HELP_STRING([--with-mpfr-include=PATH], [specify directory for installed MPFR include files])]) AC_ARG_WITH(mpfr-lib, [AS_HELP_STRING([--with-mpfr-lib=PATH], [specify directory for the installed MPFR library])]) if test "x$with_mpfr" != x; then gmplibs="-L$with_mpfr/lib $gmplibs" gmpinc="-I$with_mpfr/include $gmpinc" fi if test "x$with_mpfr_include" != x; then gmpinc="-I$with_mpfr_include $gmpinc" fi if test "x$with_mpfr_lib" != x; then gmplibs="-L$with_mpfr_lib $gmplibs" fi
Created attachment 538036 [details, diff] Patch Improved patch with explicit slot added to dependency on dev-libs/mpfr.
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=d11fb1a86270b960afdac2a2f8562c6468006099 commit d11fb1a86270b960afdac2a2f8562c6468006099 Author: Arfrever Frehtes Taifersar Arahesis <Arfrever@Apache.Org> AuthorDate: 2018-07-01 19:48:51 +0000 Commit: Sergei Trofimovich <slyfox@gentoo.org> CommitDate: 2018-07-01 20:36:57 +0000 sys-devel/gdb: Depend on dev-libs/mpfr only with USE="client". Do not pass --with-mpfr option which only sets paths for searching headers and libraries, resulting in using -Iyes/include and -Lyes/lib. Bug: https://bugs.gentoo.org/652146 sys-devel/gdb/gdb-8.1-r2.ebuild | 256 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 256 insertions(+)
