#2320: add Findlibunwind.cmake file

DARMA-tasking · Jul 31, 2024 · 45635fa · 45635fa
1 parent 3f3c982
commit 45635fa
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Showing 8 changed files with 86 additions and 6 deletions.
diff --git a/cmake-modules/Findlibunwind.cmake b/cmake-modules/Findlibunwind.cmake
@@ -0,0 +1,70 @@
+# This file downloaded from https://raw.githubusercontent.com/m-a-d-n-e-s-s/madness/master/cmake/modules/FindLibunwind.cmake
+#
+# - Try to find Libunwind
+# Input variables:
+#  LIBUNWIND_ROOT_DIR     - The libunwind install directory
+#  LIBUNWIND_INCLUDE_DIR  - The libunwind include directory
+#  LIBUNWIND_LIBRARY      - The libunwind library directory
+# Output variables:
+#  LIBUNWIND_FOUND        - System has libunwind
+#  LIBUNWIND_INCLUDE_DIRS - The libunwind include directories
+#  LIBUNWIND_LIBRARIES    - The libraries needed to use libunwind
+#  LIBUNWIND_VERSION      - The version string for libunwind
+
+include(FindPackageHandleStandardArgs)
+
+if(NOT DEFINED LIBUNWIND_FOUND)
+
+  # Set default sarch paths for libunwind
+  if(LIBUNWIND_ROOT_DIR)
+    set(LIBUNWIND_INCLUDE_DIR ${LIBUNWIND_ROOT_DIR}/include CACHE PATH "The include directory for libunwind")
+    if(CMAKE_SIZEOF_VOID_P EQUAL 8 AND CMAKE_SYSTEM_NAME STREQUAL "Linux")
+      set(LIBUNWIND_LIBRARY ${LIBUNWIND_ROOT_DIR}/lib64;${LIBUNWIND_ROOT_DIR}/lib CACHE PATH "The library directory for libunwind")
+    else()
+      set(LIBUNWIND_LIBRARY ${LIBUNWIND_ROOT_DIR}/lib CACHE PATH "The library directory for libunwind")
+    endif()
+  endif()
+
+  find_path(LIBUNWIND_INCLUDE_DIRS NAMES libunwind.h
+      HINTS ${LIBUNWIND_INCLUDE_DIR})
+
+  find_library(LIBUNWIND_LIBRARIES unwind
+      HINTS ${LIBUNWIND_LIBRARY})
+
+  # Get libunwind version
+  if(EXISTS "${LIBUNWIND_INCLUDE_DIRS}/libunwind-common.h")
+    file(READ "${LIBUNWIND_INCLUDE_DIRS}/libunwind-common.h" _libunwind_version_header)
+    string(REGEX REPLACE ".*define[ \t]+UNW_VERSION_MAJOR[ \t]+([0-9]+).*" "\\1"
+        LIBUNWIND_MAJOR_VERSION "${_libunwind_version_header}")
+    string(REGEX REPLACE ".*define[ \t]+UNW_VERSION_MINOR[ \t]+([0-9]+).*" "\\1"
+        LIBUNWIND_MINOR_VERSION "${_libunwind_version_header}")
+    string(REGEX REPLACE ".*define[ \t]+UNW_VERSION_EXTRA[ \t]+([0-9]*).*" "\\1"
+        LIBUNWIND_MICRO_VERSION "${_libunwind_version_header}")
+    if(LIBUNWIND_MICRO_VERSION)
+      set(LIBUNWIND_VERSION "${LIBUNWIND_MAJOR_VERSION}.${LIBUNWIND_MINOR_VERSION}.${LIBUNWIND_MICRO_VERSION}")
+    else()
+      set(LIBUNWIND_VERSION "${LIBUNWIND_MAJOR_VERSION}.${LIBUNWIND_MINOR_VERSION}")
+    endif()
+    unset(_libunwind_version_header)
+  endif()
+
+  # handle the QUIETLY and REQUIRED arguments and set LIBUNWIND_FOUND to TRUE
+  # if all listed variables are TRUE
+  find_package_handle_standard_args(Libunwind
+      FOUND_VAR LIBUNWIND_FOUND
+      VERSION_VAR LIBUNWIND_VERSION
+      REQUIRED_VARS LIBUNWIND_LIBRARIES LIBUNWIND_INCLUDE_DIRS)
+
+  mark_as_advanced(LIBUNWIND_INCLUDE_DIR LIBUNWIND_LIBRARY
+      LIBUNWIND_INCLUDE_DIRS LIBUNWIND_LIBRARIES)
+
+endif()
+
+if(LIBUNWIND_FOUND)
+  if(NOT TARGET LIBUNWIND::LIBUNWIND)
+    add_library(LIBUNWIND::LIBUNWIND UNKNOWN IMPORTED)
+    set_target_properties(LIBUNWIND::LIBUNWIND PROPERTIES
+        INTERFACE_INCLUDE_DIRECTORIES "${LIBUNWIND_INCLUDE_DIRS}"
+        IMPORTED_LOCATION "${LIBUNWIND_LIBRARIES}" )
+  endif()
+endif()
diff --git a/cmake/check_system_functions.cmake b/cmake/check_system_functions.cmake
@@ -10,7 +10,7 @@ check_include_files(mach/mach.h vt_has_mach_mach_h)
 check_include_files(sys/resource.h vt_has_sys_resource_h)
 check_include_files(unistd.h vt_has_unistd_h)
 check_include_files(inttypes.h vt_has_inttypes_h)
-check_include_files(libunwind.h vt_has_libunwind_h)
+# check_include_files(libunwind.h vt_has_libunwind)
 check_include_files(execinfo.h vt_has_execinfo_h)
 
 check_function_exists(mstats vt_has_mstats)

diff --git a/cmake/link_vt.cmake b/cmake/link_vt.cmake
@@ -94,7 +94,7 @@ function(link_target_with_vt)
   endif()
 
   if (NOT DEFINED ARG_LINK_UNWIND AND ${ARG_DEFAULT_LINK_SET} OR ARG_LINK_UNWIND)
-    if (vt_has_libunwind_h)
+    if (vt_has_libunwind)
       if (${ARG_DEBUG_LINK})
         message(STATUS "link_target_with_vt: unwind=${ARG_LINK_UNWIND}")
       endif()

diff --git a/cmake/load_libunwind.cmake b/cmake/load_libunwind.cmake
@@ -0,0 +1,7 @@
+set(vt_has_libunwind 0)
+
+find_package(libunwind)
+
+if(libunwind_FOUND)
+    set(vt_has_libunwind 1)
+endif()
diff --git a/cmake/load_packages.cmake b/cmake/load_packages.cmake
@@ -15,6 +15,9 @@ find_package(Perl)
 # Doxygen package
 include(cmake/load_doxygen.cmake)
 
+# Optionally link with libunwind
+include(cmake/load_libunwind.cmake)
+
 # Optionally link with Zoltan
 include(cmake/load_zoltan_package.cmake)
 

diff --git a/cmake_config.h.in b/cmake_config.h.in
@@ -89,7 +89,7 @@
 #cmakedefine vt_has_unistd_h
 #cmakedefine vt_has_inttypes_h
 #cmakedefine vt_has_sysconf
-#cmakedefine vt_has_libunwind_h
+#cmakedefine vt_has_libunwind
 #cmakedefine vt_has_execinfo_h
 
 #if vt_feature_cmake_external_fmt

diff --git a/src/vt/configs/error/stack_out.cc b/src/vt/configs/error/stack_out.cc
@@ -47,7 +47,7 @@
 
 #include <cxxabi.h>
 
-#if defined(vt_has_libunwind_h)
+#if defined(vt_has_libunwind)
 # define UNW_LOCAL_ONLY
 # include <libunwind.h>
 #elif defined(vt_has_execinfo_h)
@@ -59,7 +59,7 @@ namespace vt { namespace debug { namespace stack {
 
 DumpStackType dumpStack(int skip) {
   DumpStackType stack;
-  #if defined(vt_has_libunwind_h)
+  #if defined(vt_has_libunwind)
 
     unw_cursor_t cursor;
     unw_context_t context;

diff --git a/tests/unit/configs/test_stack_dumping.cc b/tests/unit/configs/test_stack_dumping.cc
@@ -49,7 +49,7 @@
 
 namespace vt { namespace tests { namespace unit {
 
-#if defined(vt_has_libunwind_h) || defined(vt_has_execinfo_h)
+#if defined(vt_has_libunwind) || defined(vt_has_execinfo_h)
 
   struct TestStackDumping : TestParallelHarness {};