jemalloc cmake module

(shamelessly stolen from Blender)

libstdc++ memory allocator is broken:
	"Notes about deallocation. This allocator does not explicitly release memory."

The story:
https://www.zerotier.com/blog/2017-05-05-theleak.shtml

The solution?!
http://jemalloc.net/

No need to recompile, just install it and a simple test run:

LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libjemalloc.so.1 inkscape

2 files changed, 75 insertions, 0 deletions

diff --git a/CMakeScripts/DefineDependsandFlags.cmake b/CMakeScripts/DefineDependsandFlags.cmake
index 981598527..0a8782f27 100644
--- a/CMakeScripts/DefineDependsandFlags.cmake
+++ b/CMakeScripts/DefineDependsandFlags.cmake
@@ -67,6 +67,11 @@ if(WITH_GNOME_VFS)
     endif()
 endif()
 
+find_package(JeMalloc)
+if (JEMALLOC_FOUND)
+	list(APPEND INKSCAPE_LIBS ${JEMALLOC_LIBRARIES})
+endif()
+
 if(ENABLE_LCMS)
     unset(HAVE_LIBLCMS1)
     unset(HAVE_LIBLCMS2)
diff --git a/CMakeScripts/Modules/FindJeMalloc.cmake b/CMakeScripts/Modules/FindJeMalloc.cmake
new file mode 100644
index 000000000..5c7aa2cf1
--- /dev/null
+++ b/CMakeScripts/Modules/FindJeMalloc.cmake
@@ -0,0 +1,70 @@
+# - Find JeMalloc library
+# Find the native JeMalloc includes and library
+# This module defines
+#  JEMALLOC_INCLUDE_DIRS, where to find jemalloc.h, Set when
+#                        JEMALLOC_INCLUDE_DIR is found.
+#  JEMALLOC_LIBRARIES, libraries to link against to use JeMalloc.
+#  JEMALLOC_ROOT_DIR, The base directory to search for JeMalloc.
+#                    This can also be an environment variable.
+#  JEMALLOC_FOUND, If false, do not try to use JeMalloc.
+#
+# also defined, but not for general use are
+#  JEMALLOC_LIBRARY, where to find the JeMalloc library.
+
+#=============================================================================
+# Copyright 2011 Blender Foundation.
+#
+# 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.
+#=============================================================================
+
+# If JEMALLOC_ROOT_DIR was defined in the environment, use it.
+IF(NOT JEMALLOC_ROOT_DIR AND NOT $ENV{JEMALLOC_ROOT_DIR} STREQUAL "")
+  SET(JEMALLOC_ROOT_DIR $ENV{JEMALLOC_ROOT_DIR})
+ENDIF()
+
+SET(_jemalloc_SEARCH_DIRS
+  ${JEMALLOC_ROOT_DIR}
+  /usr/local
+  /sw # Fink
+  /opt/local # DarwinPorts
+  /opt/csw # Blastwave
+)
+
+FIND_PATH(JEMALLOC_INCLUDE_DIR
+  NAMES
+    jemalloc.h
+  HINTS
+    ${_jemalloc_SEARCH_DIRS}
+  PATH_SUFFIXES
+    include/jemalloc
+)
+
+FIND_LIBRARY(JEMALLOC_LIBRARY
+  NAMES
+    jemalloc
+  HINTS
+    ${_jemalloc_SEARCH_DIRS}
+  PATH_SUFFIXES
+    lib64 lib
+  )
+
+# handle the QUIETLY and REQUIRED arguments and set JEMALLOC_FOUND to TRUE if 
+# all listed variables are TRUE
+INCLUDE(FindPackageHandleStandardArgs)
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(JeMalloc DEFAULT_MSG
+    JEMALLOC_LIBRARY JEMALLOC_INCLUDE_DIR)
+
+IF(JEMALLOC_FOUND)
+  SET(JEMALLOC_LIBRARIES ${JEMALLOC_LIBRARY})
+  SET(JEMALLOC_INCLUDE_DIRS ${JEMALLOC_INCLUDE_DIR})
+ENDIF(JEMALLOC_FOUND)
+
+MARK_AS_ADVANCED(
+  JEMALLOC_INCLUDE_DIR
+  JEMALLOC_LIBRARY
+)