| Message ID | 20220428094617.2298788-1-jwakely@redhat.com |
|---|---|
| State | New |
| Headers | show |
| Series | doc: Remove misleading text about multilibs for IEEE long double | expand |
On Thu, Apr 28, 2022 at 10:46:17AM +0100, Jonathan Wakely via Gcc-patches wrote: > IIUC this text is not true (maybe it was back in 2018?) > > OK for trunk? > > Which branches should it be on too, all of them? > > -- >8 -- > > The choice of ieee or ibm long double format is orthogonal to multilibs, > as the two sets of symbols co-exist and don't need a separate multilib. > > gcc/ChangeLog: > > * doc/install.texi (Configuration): Remove misleading text > around LE PowerPC Linux multilibs. Ok. Jakub
On Thu, Apr 28, 2022 at 10:46:17AM +0100, Jonathan Wakely wrote: > IIUC this text is not true (maybe it was back in 2018?) Initially I thought the way to transition to IEEE 128-bit long double would be through multilibs, but we never installed multilibs for the different long double types. So yeah, the comment doesn't make sense these days. > OK for trunk? > > Which branches should it be on too, all of them? > > -- >8 -- > > The choice of ieee or ibm long double format is orthogonal to multilibs, > as the two sets of symbols co-exist and don't need a separate multilib. > > gcc/ChangeLog: > > * doc/install.texi (Configuration): Remove misleading text > around LE PowerPC Linux multilibs. > --- > gcc/doc/install.texi | 11 ----------- > 1 file changed, 11 deletions(-) > > diff --git a/gcc/doc/install.texi b/gcc/doc/install.texi > index 3192824bdc4..10bfceffceb 100644 > --- a/gcc/doc/install.texi > +++ b/gcc/doc/install.texi > @@ -2139,17 +2139,6 @@ Until all of the libraries are converted to use IEEE 128-bit floating > point, it is not recommended to use > @option{--with-long-double-format=ieee}. > > -On little endian PowerPC Linux systems, if you explicitly set the > -@code{long double} type, it will build multilibs to allow you to > -select either @code{long double} format, unless you disable multilibs > -with the @code{--disable-multilib} option. At present, > -@code{long double} multilibs are not built on big endian PowerPC Linux > -systems. If you are building multilibs, you will need to configure > -the compiler using the @option{--with-system-zlib} option. > - > -If you do not set the @code{long double} type explicitly, no multilibs > -will be generated. > - > @item --enable-fdpic > On SH Linux systems, generate ELF FDPIC code. > > -- > 2.34.1 >
diff --git a/gcc/doc/install.texi b/gcc/doc/install.texi index 3192824bdc4..10bfceffceb 100644 --- a/gcc/doc/install.texi +++ b/gcc/doc/install.texi @@ -2139,17 +2139,6 @@ Until all of the libraries are converted to use IEEE 128-bit floating point, it is not recommended to use @option{--with-long-double-format=ieee}. -On little endian PowerPC Linux systems, if you explicitly set the -@code{long double} type, it will build multilibs to allow you to -select either @code{long double} format, unless you disable multilibs -with the @code{--disable-multilib} option. At present, -@code{long double} multilibs are not built on big endian PowerPC Linux -systems. If you are building multilibs, you will need to configure -the compiler using the @option{--with-system-zlib} option. - -If you do not set the @code{long double} type explicitly, no multilibs -will be generated. - @item --enable-fdpic On SH Linux systems, generate ELF FDPIC code.