Commit Graph

14 Commits

Author SHA1 Message Date
dim
faef8778d9 Update build glue for libomp. 2020-01-27 18:04:28 +00:00
dim
d111c7844e Move all sources from the llvm project into contrib/llvm-project.
This uses the new layout of the upstream repository, which was recently
migrated to GitHub, and converted into a "monorepo".  That is, most of
the earlier separate sub-projects with their own branches and tags were
consolidated into one top-level directory, and are now branched and
tagged together.

Updating the vendor area to match this layout is next.
2019-12-20 19:53:05 +00:00
dim
9bd3ddf47d When building libomp for i386, clang 9.0.0 produces a new warning about
large atomic operations "possibly incurring significant performance
penalties", but there is not much we can do about it, so squelch that
warning.
2019-09-08 10:00:21 +00:00
dim
9e3905e2da Update build glue for building libomp. 2019-09-01 18:25:45 +00:00
dim
00c7e0eef5 To avoid unnecessarily modifying ports, add a -lgomp symlink, since GCC
does not ship a -lomp symlink.  Also update OptionalObsoleteFiles for
this, and add 32-bit variants while here.

Submitted by:	jbeich
PR:		237975
MFC after:	3 days
2019-05-19 20:13:55 +00:00
ngie
777d26ce52 Standardize -std=c++* as CXXSTD`
CXXSTD was added as the C++ analogue to CSTD.

CXXSTD defaults to `-std=c++11` with supporting compilers; `-std=gnu++98`,
otherwise for older versions of g++.

This change standardizes the CXXSTD variable, originally added to
googletest.test.inc.mk as part of r345203.

As part of this effort, convert all `CXXFLAGS+= -std=*` calls to use `CXXSTD`.

Notes:

This value is not sanity checked in bsd.sys.mk, however, given the two
most used C++ compilers on FreeBSD (clang++ and g++) support both modes, it is
likely to work with both toolchains. This method will be refined in the future
to support more variants of C++, as not all versions of clang++ and g++ (for
instance) support C++14, C++17, etc.

Any manual appending of `-std=*` to `CXXFLAGS` should be replaced with CXXSTD.
Example:

Before this commit:
```
CXXFLAGS+=	-std=c++14
```

After this commit:
```
CXXSTD=	c++14
```

Reviewed by:	asomers
Approved by:	emaste (mentor)
MFC after:	1 month
MFC with:	r345203, r345704, r345705
Relnotes:	yes
Tested with:	make tinderbox
Differential Revision:	https://reviews.freebsd.org/D19732
2019-03-29 18:45:27 +00:00
ngie
c702cbc7f9 Revert r345706: the third time will be the charm
When a review is closed via Phabricator it updates the patch attached to the
review. I downloaded the raw patch from Phabricator, applied it, and repeated
my mistake from r345704 by accident mixing content from D19732 and D19738.

For my own personal sanity, I will try not to mix reviews like this in the
future.

MFC after:	1 month
MFC with:	r345706
Approved by:	emaste (mentor, implicit)
2019-03-29 18:43:46 +00:00
ngie
04346017b4 Standardize -std=c++* as CXXSTD`
CXXSTD was added as the C++ analogue to CSTD.

CXXSTD defaults to `-std=c++11` with supporting compilers; `-std=gnu++98`,
otherwise for older versions of g++.

This change standardizes the CXXSTD variable, originally added to
googletest.test.inc.mk as part of r345203.

As part of this effort, convert all `CXXFLAGS+= -std=*` calls to use `CXXSTD`.

Notes:

This value is not sanity checked in bsd.sys.mk, however, given the two
most used C++ compilers on FreeBSD (clang++ and g++) support both modes, it is
likely to work with both toolchains. This method will be refined in the future
to support more variants of C++, as not all versions of clang++ and g++ (for
instance) support C++14, C++17, etc.

Any manual appending of `-std=*` to `CXXFLAGS` should be replaced with CXXSTD.
Example:

Before this commit:
```
CXXFLAGS+=	-std=c++14
```

After this commit:
```
CXXSTD=	c++14
```

Reviewed by:	asomers
Approved by:	emaste (mentor)
MFC after:	1 month
MFC with:	r345203, r345704, r345705
Relnotes:	yes
Tested with:	make tinderbox
Differential Revision:	https://reviews.freebsd.org/D19732
2019-03-29 18:31:48 +00:00
ngie
feb0a2664c Revert r345704
I accidentally committed code from two reviews. I will reintroduce the code to
bsd.progs.mk as part of a separate commit from r345704.

Approved by:	emaste (mentor, implicit)
MFC after:	2 months
MFC with:	r345704
2019-03-29 18:16:33 +00:00
ngie
aeeceba42b CXXSTD is the C++ analogue to CSTD.
CXXSTD defaults to `-std=c++11` with supporting compilers; `-std=gnu++98`,
otherwise for older versions of g++.

This change standardizes the CXXSTD variable, originally added to
googletest.test.inc.mk as part of r345203.

As part of this effort, convert all `CXXFLAGS+= -std=*` calls to use `CXXSTD`.

Notes:

This value is not sanity checked in bsd.sys.mk, however, given the two
most used C++ compilers on FreeBSD (clang++ and g++) support both modes, it is
likely to work with both toolchains. This method will be refined in the future
to support more variants of C++, as not all versions of clang++ and g++ (for
instance) support C++14, C++17, etc.

Any manual appending of `-std=*` to `CXXFLAGS` should be replaced with CXXSTD.
Example:

Before this commit:
```
CXXFLAGS+=	-std=c++14
```

After this commit:
```
CXXSTD=	c++14
```

Reviewed by:	asomers
Approved by:	emaste (mentor)
MFC after:	1 month
Relnotes:	yes
Differential Revision:	https://reviews.freebsd.org/D19732
2019-03-29 18:13:44 +00:00
dim
4b26eab0c6 Remove --as-needed from the linker flags for libomp.so, as these
actually prevent the transitive dependency on libm.

Reported by:	jbeich
PR:		236062, 236581
MFC after:	1 month
X-MFC-With:	r344779
2019-03-18 19:56:00 +00:00
dim
fdfe051110 Also explicitly link libomp.so against -lm, as it transitively depends
on scalbn and a few other math functions, via libcompiler-rt.  This
should allow OpenMP programs to link with BFD linkers too.

Reported by:	jbeich
PR:		236062, 236581
MFC after:	1 month
X-MFC-With:	r344779
2019-03-18 19:11:11 +00:00
dim
ad625eb486 Explicitly link libomp.so against -lpthread, as it depends on pthread
functionality.  This should make example OpenMP programs work out of the
box.

Reported by:	jbeich
PR:		236062, 236581
MFC after:	1 month
X-MFC-With:	r344779
2019-03-17 11:27:27 +00:00
dim
ac90eb90b3 Add lib/libomp, with a Makefile, and generated configuration headers.
Not connected to the main build yet, as there is still the issue of the
GNU omp.h header conflicting with the LLVM one.  (That is, if MK_GCC is
enabled.)

PR:		236062
MFC after:	1 month
X-MFC-With:	r344779
2019-03-16 15:01:36 +00:00