From f5872f3f9726a2f91c0189735c0dbcf7b029337f Mon Sep 17 00:00:00 2001 From: Ismael Luceno Date: Fri, 9 Sep 2022 16:56:49 +0200 Subject: [PATCH 2/2] Enable building against libucontext The ucontext.h API may be implemented outside the libc. Origin: Source Mage GNU/Linux Upstream-Status: Submitted [https://github.com/oneapi-src/oneTBB/pull/900] Signed-off-by: Ismael Luceno --- cmake/ucontext.cmake | 20 ++++++++++++++++++++ src/tbb/CMakeLists.txt | 1 + 2 files changed, 21 insertions(+) create mode 100644 cmake/ucontext.cmake diff --git a/cmake/ucontext.cmake b/cmake/ucontext.cmake new file mode 100644 index 000000000000..26f22559c78f --- /dev/null +++ b/cmake/ucontext.cmake @@ -0,0 +1,20 @@ +# The ucontext API may be implemented outside the default library set +include(CheckSymbolExists) +if (NOT DEFINED UCONTEXT_LIBRARIES + AND CMAKE_SYSTEM_NAME MATCHES "^Linux") + check_symbol_exists("getcontext" "ucontext.h" HAVE_UCONTEXT) + if (NOT HAVE_UCONTEXT) + message(STATUS "Checking for libucontext") + find_library(LIBUCONTEXT "ucontext") + if (LIBUCONTEXT STREQUAL "LIBUCONTEXT-NOTFOUND") + message(WARNING "No ucontext API available") + set(LIBUCONTEXT "") + else() + message(STATUS "Found libucontext: ${LIBUCONTEXT}") + set(HAVE_UCONTEXT 1) + endif() + set(UCONTEXT_LIBRARIES "${LIBUCONTEXT}" CACHE FILEPATH + "Library providing the ucontext API (if not in the default set)") + endif() +endif() +mark_as_advanced(LIBUCONTEXT HAVE_UCONTEXT) diff --git a/src/tbb/CMakeLists.txt b/src/tbb/CMakeLists.txt index 7f8228c09d11..c24db1f34bd2 100644 --- a/src/tbb/CMakeLists.txt +++ b/src/tbb/CMakeLists.txt @@ -118,6 +118,7 @@ target_link_libraries(tbb Threads::Threads ${TBB_LIB_LINK_LIBS} ${TBB_COMMON_LINK_LIBS} + ${UCONTEXT_LIBRARIES} ) tbb_install_target(tbb) -- 2.37.3