Skip to content

Disable support for GCC < v4.8.1 #9398

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 2 commits into from
Oct 6, 2021
Merged

Disable support for GCC < v4.8.1 #9398

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
a086a5c
opal_setup_cc.m4: remove dead code
jsquyres Sep 21, 2021
12cef1f
configury: explicitly disable gcc < v4.8.1
jsquyres Sep 21, 2021
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
3 changes: 3 additions & 0 deletions NEWS
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -77,6 +77,7 @@ Master (not on release branches yet)

v5.0.0rc1 -- September, 2021
--------------------

- ORTE, the underlying OMPI launcher has been removed, and replaced
with PRTE.
- Reworked how Open MPI integrates with 3rd party packages.
Expand All @@ -94,6 +95,8 @@ v5.0.0rc1 -- September, 2021
- Various ROMIO v3.4.1 updates.
- Use Pandoc to generate manpages
- 32 bit atomics are now only supported via C11 compliant compilers.
- Explicitly disable support for GNU gcc < v4.8.1 (note: the default
gcc compiler that is included in RHEL 7 is v4.8.5).
- Do not build Open SHMEM layer when there are no SPMLs available.
Currently, this means the Open SHMEM layer will only build if
the UCX library is found.
Expand Down
2 changes: 1 addition & 1 deletion README.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -201,7 +201,7 @@ base as of this writing (April 2020):

* On platforms other than x86-64, AArch64 (64-bit ARM), and PPC64,
Open MPI requires a compiler that either supports C11 atomics or
the GCC `__atomic` atomics (e.g., GCC >= v4.7.2).
the GCC `__atomic` atomics (e.g., GCC >= v4.8.1).

* 32-bit platforms are only supported with a recent compiler that
supports C11 atomics. This includes gcc 4.9.x+ (gcc 6.x or newer
Expand Down
4 changes: 0 additions & 4 deletions config/opal_setup_cc.m4
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -416,10 +416,6 @@ AC_DEFUN([OPAL_SETUP_CC],[

AC_DEFUN([_OPAL_START_SETUP_CC],[
opal_show_subtitle "C compiler and preprocessor"

# $%@#!@#% AIX!! This has to be called before anything invokes the C
# compiler.
dnl AC_AIX
])


Expand Down
16 changes: 16 additions & 0 deletions configure.ac
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -600,6 +600,22 @@ opal_show_subtitle "Compiler characteristics"
OPAL_CHECK_ATTRIBUTES
OPAL_CHECK_COMPILER_VERSION_ID

# Open MPI only supports GCC >=v4.8.1. Notes:
#
# 1. The default compiler that comes with RHEL 7 is v4.8.5 (version ID
# 264197).
# 2. We regularly test with GCC v4.8.1 (version ID 264193).
# 3. GCC 4.8.0 probably also works; we just haven't tested it.
#
# Since we regularly test with 4.8.1, that's what we check for.
AS_IF([test "$opal_cv_compiler_FAMILYNAME" = "GNU" && \
test "$opal_cv_compiler_VERSION" -lt 264193],
[AC_MSG_WARN([Open MPI no longer supports versions of the GNU compiler suite])
AC_MSG_WARN([less than v4.8.1.])
AC_MSG_WARN([Please upgrade your GNU compiler suite, or use])
AC_MSG_WARN([a different compiler to build Open MPI.])
AC_MSG_ERROR([Cannot continue])
])

##################################
# Java MPI Binding request
Expand Down