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http://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=ad057a104e2340e50cb08b95e8afbb92592bd112
commit ad057a104e2340e50cb08b95e8afbb92592bd112
Merge: 534ca7e c6f339c
Author: Vadim Zhukov <persg...@gmail.com>
AuthorDate: Wed Nov 20 16:01:27 2013 -0500
Commit: CMake Topic Stage <kwro...@kitware.com>
CommitDate: Wed Nov 20 16:01:27 2013 -0500
Merge topic 'find_backtrace' into next
c6f339c Add FindBacktrace.cmake module.
http://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=c6f339ceb84876a865ae96cf3db4c1ff856c65be
commit c6f339ceb84876a865ae96cf3db4c1ff856c65be
Author: Vadim Zhukov <persg...@gmail.com>
AuthorDate: Sun Jul 28 14:31:30 2013 +0400
Commit: Brad King <brad.k...@kitware.com>
CommitDate: Wed Oct 16 10:53:01 2013 -0400
Add FindBacktrace.cmake module.
It designed to search for implementation of backtrace(3) routine.
Currently it is used in OpenBSD Ports for building Clementine
music player.
A lot of input from brad.king@ and neundorf@.
diff --git a/Help/manual/cmake-modules.7.rst b/Help/manual/cmake-modules.7.rst
index da518d3..9235b8c 100644
--- a/Help/manual/cmake-modules.7.rst
+++ b/Help/manual/cmake-modules.7.rst
@@ -70,6 +70,7 @@ All Modules
/module/FindAVIFile
/module/FindBISON
/module/FindBLAS
+ /module/FindBacktrace
/module/FindBoost
/module/FindBullet
/module/FindBZip2
diff --git a/Help/module/FindBacktrace.rst b/Help/module/FindBacktrace.rst
new file mode 100644
index 0000000..e1ca48c
--- /dev/null
+++ b/Help/module/FindBacktrace.rst
@@ -0,0 +1 @@
+.. cmake-module:: ../../Modules/FindBacktrace.cmake
diff --git a/Modules/FindBacktrace.cmake b/Modules/FindBacktrace.cmake
new file mode 100644
index 0000000..56e739e
--- /dev/null
+++ b/Modules/FindBacktrace.cmake
@@ -0,0 +1,91 @@
+#.rst:
+# FindBacktrace
+# -------------
+#
+# Find provider for backtrace(3).
+#
+# Checks if OS supports backtrace(3) via either libc or custom library.
+# This module defines the following variables::
+#
+# Backtrace_HEADER - The header file needed for backtrace(3). Cached.
+# Could be forcibly set by user.
+# Backtrace_INCLUDE_DIRS - The include directories needed to use backtrace(3)
header.
+# Backtrace_LIBRARIES - The libraries (linker flags) needed to use
backtrace(3), if any.
+# Backtrace_FOUND - Is set if and only if backtrace(3) support
detected.
+#
+# The following cache variables are also available to set or use::
+#
+# Backtrace_LIBRARY - The external library providing backtrace, if any.
+# Backtrace_INCLUDE_DIR - The directory holding the backtrace(3) header.
+#
+# Typical usage is to generate of header file using configure_file() with the
+# contents like the following::
+#
+# #cmakedefine01 Backtrace_FOUND
+# #if Backtrace_FOUND
+# # include <${Backtrace_HEADER}>
+# #endif
+#
+# And then reference that generated header file in actual source.
+
+#=============================================================================
+# Copyright 2013 Vadim Zhukov
+#
+# Distributed under the OSI-approved BSD License (the "License");
+# see accompanying file Copyright.txt for details.
+#
+# This software is distributed WITHOUT ANY WARRANTY; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the License for more information.
+#=============================================================================
+# (To distribute this file outside of CMake, substitute the full
+# License text for the above reference.)
+
+
+include(CMakePushCheckState)
+include(CheckSymbolExists)
+include(FindPackageHandleStandardArgs)
+
+# List of variables to be provided to find_package_handle_standard_args()
+set(_Backtrace_STD_ARGS Backtrace_INCLUDE_DIR)
+
+if(Backtrace_HEADER)
+ set(_Backtrace_HEADER_TRY "${Backtrace_HEADER}")
+else(Backtrace_HEADER)
+ set(_Backtrace_HEADER_TRY "execinfo.h")
+endif(Backtrace_HEADER)
+
+find_path(Backtrace_INCLUDE_DIR "${_Backtrace_HEADER_TRY}")
+set(Backtrace_INCLUDE_DIRS ${Backtrace_INCLUDE_DIR})
+
+# First, check if we already have backtrace(), e.g., in libc
+cmake_push_check_state(RESET)
+set(CMAKE_REQUIRED_INCLUDES ${Backtrace_INCLUDE_DIRS})
+check_symbol_exists("backtrace" "${_Backtrace_HEADER_TRY}"
_Backtrace_SYM_FOUND)
+cmake_pop_check_state()
+
+if(_Backtrace_SYM_FOUND)
+ set(Backtrace_LIBRARY)
+ if(NOT Backtrace_FIND_QUIETLY)
+ message(STATUS "backtrace facility detected in default set of libraries")
+ endif()
+else()
+ # Check for external library, for non-glibc systems
+ if(Backtrace_INCLUDE_DIR)
+ # OpenBSD has libbacktrace renamed to libexecinfo
+ find_library(Backtrace_LIBRARY "execinfo")
+ elseif() # respect user wishes
+ set(_Backtrace_HEADER_TRY "backtrace.h")
+ find_path(Backtrace_INCLUDE_DIR ${_Backtrace_HEADER_TRY})
+ find_library(Backtrace_LIBRARY "backtrace")
+ endif()
+
+ # Prepend list with library path as it's more common practice
+ set(_Backtrace_STD_ARGS Backtrace_LIBRARY ${_Backtrace_STD_ARGS})
+endif()
+
+set(Backtrace_LIBRARIES ${Backtrace_LIBRARY})
+set(Backtrace_HEADER "${_Backtrace_HEADER_TRY}" CACHE STRING "Header providing
backtrace(3) facility")
+
+find_package_handle_standard_args(Backtrace FOUND_VAR Backtrace_FOUND
REQUIRED_VARS ${_Backtrace_STD_ARGS})
+mark_as_advanced(Backtrace_HEADER Backtrace_INCLUDE_DIR Backtrace_LIBRARY)
-----------------------------------------------------------------------
Summary of changes:
Help/manual/cmake-modules.7.rst | 1 +
Help/module/FindBacktrace.rst | 1 +
Modules/FindBacktrace.cmake | 91 +++++++++++++++++++++++++++++++++++++++
3 files changed, 93 insertions(+), 0 deletions(-)
create mode 100644 Help/module/FindBacktrace.rst
create mode 100644 Modules/FindBacktrace.cmake
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