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| author | Thomas Preud'homme <thomas.preudhomme@arm.com> | 2017-05-05 16:50:40 +0000 |
|---|---|---|
| committer | Thomas Preud'homme <thopre01@gcc.gnu.org> | 2017-05-05 16:50:40 +0000 |
| commit | 2f738ca53b64a4cde021f3274946b9426ee4fea5 (patch) | |
| tree | 7bb1fcd07064c4f2cc226ff6a79b00fbca38e6ec /gcc/doc | |
| parent | 77fa3ec1b25e4f66ea87b3049c91c7249c1ec92c (diff) | |
| download | gcc-2f738ca53b64a4cde021f3274946b9426ee4fea5.zip gcc-2f738ca53b64a4cde021f3274946b9426ee4fea5.tar.gz gcc-2f738ca53b64a4cde021f3274946b9426ee4fea5.tar.bz2 | |
[ARM] Allow combination of aprofile and rmprofile multilibs
2017-05-05 Thomas Preud'homme <thomas.preudhomme@arm.com>
gcc/
* config.gcc: Allow combinations of aprofile and rmprofile values for
--with-multilib-list.
* config/arm/t-multilib: New file.
* config/arm/t-aprofile: Remove initialization of MULTILIB_*
variables. Remove setting of ISA and floating-point ABI in
MULTILIB_OPTIONS and MULTILIB_DIRNAMES. Set architecture and FPU in
MULTI_ARCH_OPTS_A and MULTI_ARCH_DIRS_A rather than MULTILIB_OPTIONS
and MULTILIB_DIRNAMES respectively. Add comment to introduce all
matches. Add architecture matches for marvel-pj4 and generic-armv7-a
CPU options.
* config/arm/t-rmprofile: Likewise except for the matches changes.
* doc/install.texi (--with-multilib-list): Document the combination of
aprofile and rmprofile values and warn about pitfalls in doing that.
From-SVN: r247646
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/install.texi | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/gcc/doc/install.texi b/gcc/doc/install.texi index f165e11..b13fc1f 100644 --- a/gcc/doc/install.texi +++ b/gcc/doc/install.texi @@ -1092,14 +1092,18 @@ for each target is given below. @table @code @item arm*-*-* -@var{list} is one of@code{default}, @code{aprofile} or @code{rmprofile}. -Specifying @code{default} is equivalent to omitting this option, ie. only the -default runtime library will be enabled. Specifying @code{aprofile} or -@code{rmprofile} builds multilibs for a combination of ISA, architecture, -FPU available and floating-point ABI. +@var{list} is a comma separated list of @code{aprofile} and @code{rmprofile} +to build multilibs for A or R and M architecture profiles respectively. Note +that, due to some limitation of the current multilib framework, using the +combined @code{aprofile,rmprofile} multilibs selects in some cases a less +optimal multilib than when using the multilib profile for the architecture +targetted. The special value @code{default} is also accepted and is equivalent +to omitting the option, ie. only the default run-time library will be enabled. The table below gives the combination of ISAs, architectures, FPUs and floating-point ABIs for which multilibs are built for each accepted value. +The union of these options is considered when specifying both @code{aprofile} +and @code{rmprofile}. @multitable @columnfractions .15 .28 .30 @item Option @tab aprofile @tab rmprofile |