sys-libs/libomp: Bump to 4.0.0rc3

3 files changed, 102 insertions, 1 deletions

diff --git a/sys-libs/libomp/Manifest b/sys-libs/libomp/Manifest
index 5e3987a849ab..d2ad231e822a 100644
--- a/sys-libs/libomp/Manifest
+++ b/sys-libs/libomp/Manifest
@@ -2,4 +2,4 @@ DIST openmp-3.7.1.src.tar.xz 2026988 SHA256 9a702e20c247014f6de8c45b738c6ea586ec
 DIST openmp-3.8.1.src.tar.xz 2009572 SHA256 68fcde6ef34e0275884a2de3450a31e931caf1d6fda8606ef14f89c4123617dc SHA512 406e9077817c50bcd58dd50bd334258ebf4b81c3ecce830ae1f427bd7c1fc9376b63fdeb3459c953c341becde82d83be18069bfcd34cbaeee6f1478267c0b2bc WHIRLPOOL b733b7f8f965be86af49af5b02892ec8aacaafe00d310a21c8cc0155f1699da66d1c8aa7709eb230810c4ff68f63896d5a7548777c100ca91a8af998922bdca0
 DIST openmp-3.9.0.src.tar.xz 2257596 SHA256 df88f90d7e5b5e9525a35fa2e2b93cbbb83c4882f91df494e87ee3ceddacac91 SHA512 030432bb10d86016f0f1c4f4d8b25f78acdb4aed33c604baf07c825bbcc6198306f2f71a3e56030f20864a92ab0187357aff94d34e47f7166991faf539c0104d WHIRLPOOL 7bfb362c0f087d3867c8cab04ebba23c8e6337d34ddcdfeda1cbe960611eacf1e4356e99bf4d6316b60c9f4b9f9fb23eecdb346feaae72b9cd168ee0aa3cca2a
 DIST openmp-3.9.1.src.tar.xz 2031588 SHA256 d23b324e422c0d5f3d64bae5f550ff1132c37a070e43c7ca93991676c86c7766 SHA512 80924a6f9765f634d24d7b0aa036d92c912dbd8e067487a14bdd03b4c587fdfc92e83eb29926bfa637ef45be3f133a924f77ab12099ea3706c18e9c42774708b WHIRLPOOL b6ec75d4f9d2b86bb8e2927791cb46e61ff8657fc21f9e0ba9893d81d3382522aca330564f3156c1fbbf765de0499e875e41e11199abe2da8ed1bef057d5e8d8
-DIST openmp-4.0.0rc2.src.tar.xz 2039312 SHA256 d7a927c0a7b0c0572e0c1e316a1bf2b7fbc398418fa411bcb34e7b7d53811715 SHA512 bb53c34861dcb5df52fd079dc816b507302210a3b4ab33d815d01b7d581a233280c10cfaa4ae2039591c4d73a375326b96f3bae142540b4a8041a655139053ae WHIRLPOOL d5d4dba9462737263b39663d12afad1f1c5cacc892fa5914834b12d11815fdd57a7d23669462915cfbc2117d70c283eef4f6193184991bb10dfc1ebc4a54fcb2
+DIST openmp-4.0.0rc3.src.tar.xz 2039416 SHA256 9692a8f8b2344b65afe2374959d02430515a29ff3420552f1c1b94cc663c85eb SHA512 19d289ba040950151131374c83b330a4a2e1501deb0a1dccba0e30cc59e8a48bb28642047c4a1dfa18ddda392c340873707af42976c6f7ce177d2b5383c17373 WHIRLPOOL 98ed954ab77c38f235e0254a32c16be78ded4e61710f96e52bbeb370a84219c1f763042c9d83298f99560086532211cde5e747d2fad385f58f04a7ad5fcb8b65
diff --git a/sys-libs/libomp/files/4.0.0/0001-test-Try-to-link-latomic-to-provide-atomics-when-ava.patch b/sys-libs/libomp/files/4.0.0/0001-test-Try-to-link-latomic-to-provide-atomics-when-ava.patch
new file mode 100644
index 000000000000..688175583269
--- /dev/null
+++ b/sys-libs/libomp/files/4.0.0/0001-test-Try-to-link-latomic-to-provide-atomics-when-ava.patch
@@ -0,0 +1,94 @@
+From 7bd70635240f69fcd4da4d98a4aca8aaa779dd11 Mon Sep 17 00:00:00 2001
+From: Michal Gorny <mgorny@gentoo.org>
+Date: Fri, 24 Feb 2017 22:15:24 +0000
+Subject: [PATCH] [test] Try to link -latomic to provide atomics when available
+
+When using -rtlib=libgcc, the fallback implementation of __atomic_*
+builtins is provided via libatomic (included in GCC). However, neither
+GCC itself nor clang link libatomic implicitly, and it seems that GCC
+upstream expects projects to link it explicitly as necessary.
+
+Since compiler-rt provides __atomic_* builtins directly in the main
+library, check if they are provided by the default libraries first.
+If they are not, check if -latomic is available to provide them
+and add explicit -latomic for tests in this case.
+
+This fixes unresolved __atomic_load() references when running openmp
+tests on i386 with libgcc backend.
+
+Differential Revision: https://reviews.llvm.org/D30083
+
+git-svn-id: https://llvm.org/svn/llvm-project/openmp/trunk@296183 91177308-0d34-0410-b5e6-96231b3b80d8
+---
+ runtime/test/CMakeLists.txt  | 13 +++++++++++++
+ runtime/test/lit.cfg         |  2 ++
+ runtime/test/lit.site.cfg.in |  2 +-
+ 3 files changed, 16 insertions(+), 1 deletion(-)
+
+diff --git a/runtime/test/CMakeLists.txt b/runtime/test/CMakeLists.txt
+index 8162855..88c02c8 100644
+--- a/runtime/test/CMakeLists.txt
++++ b/runtime/test/CMakeLists.txt
+@@ -1,6 +1,7 @@
+ # CMakeLists.txt file for unit testing OpenMP Library
+ include(FindPythonInterp)
+ include(CheckTypeSize)
++include(CheckFunctionExists)
+ include(CheckLibraryExists)
+ 
+ if(NOT PYTHONINTERP_FOUND)
+@@ -11,6 +12,17 @@ endif()
+ 
+ # Some tests use math functions
+ check_library_exists(m sqrt "" LIBOMP_HAVE_LIBM)
++# When using libgcc, -latomic may be needed for atomics
++# (but when using compiler-rt, the atomics will be built-in)
++# Note: we can not check for __atomic_load because clang treats it
++# as special built-in and that breaks CMake checks
++check_function_exists(__atomic_load_1 LIBOMP_HAVE_BUILTIN_ATOMIC)
++if(NOT LIBOMP_HAVE_BUILTIN_ATOMIC)
++  check_library_exists(atomic __atomic_load_1 "" LIBOMP_HAVE_LIBATOMIC)
++else()
++  # not needed
++  set(LIBOMP_HAVE_LIBATOMIC 0)
++endif()
+ 
+ macro(pythonize_bool var)
+   if (${var})
+@@ -25,6 +37,7 @@ pythonize_bool(LIBOMP_OMPT_SUPPORT)
+ pythonize_bool(LIBOMP_OMPT_BLAME)
+ pythonize_bool(LIBOMP_OMPT_TRACE)
+ pythonize_bool(LIBOMP_HAVE_LIBM)
++pythonize_bool(LIBOMP_HAVE_LIBATOMIC)
+ 
+ set(LIBOMP_TEST_CFLAGS "" CACHE STRING
+   "Extra compiler flags to send to the test compiler")
+diff --git a/runtime/test/lit.cfg b/runtime/test/lit.cfg
+index 7f18da4..bef61d4 100644
+--- a/runtime/test/lit.cfg
++++ b/runtime/test/lit.cfg
+@@ -52,6 +52,8 @@ config.test_cflags = config.test_openmp_flag + \
+ libs = ""
+ if config.has_libm:
+     libs += " -lm"
++if config.has_libatomic:
++    libs += " -latomic"
+ 
+ # Allow XFAIL to work
+ config.target_triple = [ ]
+diff --git a/runtime/test/lit.site.cfg.in b/runtime/test/lit.site.cfg.in
+index 448132e..b0d57ce 100644
+--- a/runtime/test/lit.site.cfg.in
++++ b/runtime/test/lit.site.cfg.in
+@@ -12,7 +12,7 @@ config.hwloc_library_dir = "@LIBOMP_HWLOC_LIBRARY_DIR@"
+ config.using_hwloc = @LIBOMP_USE_HWLOC@
+ config.has_ompt = @LIBOMP_OMPT_SUPPORT@ and @LIBOMP_OMPT_BLAME@ and @LIBOMP_OMPT_TRACE@
+ config.has_libm = @LIBOMP_HAVE_LIBM@
++config.has_libatomic = @LIBOMP_HAVE_LIBATOMIC@
+ 
+ # Let the main config do the real work.
+ lit_config.load_config(config, "@LIBOMP_BASE_DIR@/test/lit.cfg")
+-
+-- 
+2.12.0
+
diff --git a/sys-libs/libomp/libomp-4.0.0_rc2.ebuild b/sys-libs/libomp/libomp-4.0.0_rc3.ebuild
index 1ff6114e8f15..ebb233b08e06 100644
--- a/sys-libs/libomp/libomp-4.0.0_rc2.ebuild
+++ b/sys-libs/libomp/libomp-4.0.0_rc3.ebuild
@@ -49,6 +49,13 @@ pkg_setup() {
 	use test && python-any-r1_pkg_setup
 }
 
+src_prepare() {
+	# fix atomic tests with gcc
+	eapply "${FILESDIR}"/4.0.0/0001-test-Try-to-link-latomic-to-provide-atomics-when-ava.patch
+
+	eapply_user
+}
+
 multilib_src_configure() {
 	local libdir="$(get_libdir)"
 	local mycmakeargs=(