Allow disabling signal handling, turn signal handling off by default.

CInterface/Core.cpp

@@ -7,7 +7,7 @@ std::string ExceptionHandler::_ArbutilsLastException = "";
 /// @brief Returns a null-terminated C string to the last exception found.
 export const char* Arbutils_C_GetLastException() { return ExceptionHandler::GetLastException(); }
 
-#if !WINDOWS
+#if !WINDOWS && SIGNAL_HANDLING
 static ArbUt::SignalHandling sh;
 /// @brief Sets a callback to a function to run when a signal occurs.
 export void Arbutils_C_SetSignalCallback(void (*callback)(const char*)) { sh.SetCallback(callback); }

CMakeLists.txt

@@ -11,6 +11,7 @@ option(SHARED "Whether we should build a shared library, instead of a static one
 option(TESTS "Whether the test executable should be build as well." OFF)
 option(STATICC "Whether gcc and stdc++ should be linked statically to the library." OFF)
 option(PRETTYTRACES "Whether full stacktraces should be included. Note that this adds a dependency to libdw." ON)
+option(SIGNAL_HANDLING "whether to include signal handling." OFF)
 
 # Set whether we want a static or shared library.
 set(LIBTYPE STATIC)
@@ -46,6 +47,10 @@ if (NOT WINDOWS AND PRETTYTRACES)
     set(LINKS ${LINKS} -ldw)
     ADD_DEFINITIONS(-DPRETTYTRACES=1)
 endif()
+if (SIGNAL_HANDLING)
+    ADD_DEFINITIONS(-DSIGNAL_HANDLING=1)
+endif()
+
 # If we want to link the C and C++ library statically, link those as well.
 if (STATICC)
     set(LINKS ${LINKS} -static-libgcc -static-libstdc++ -Wl,-Bstatic -lstdc++ -lpthread)

src/SignalHandling.cpp

@@ -1,6 +1,6 @@
 #include "SignalHandling.hpp"
 
-#if !WINDOWS
+#if !WINDOWS && SIGNAL_HANDLING
 /// \cond SKIP
 void (*ArbUt::SignalHandling::_callback)(const char*) = nullptr;
 /// \endcond

src/SignalHandling.hpp

@@ -1,5 +1,6 @@
 #ifndef ARBUTILS_SIGNALHANDLING_HPP
 #define ARBUTILS_SIGNALHANDLING_HPP
+#if SIGNAL_HANDLING
 #if PRETTYTRACES && !WINDOWS
 #define BACKWARD_HAS_DW 1
 #include "../extern/backward.hpp"
@@ -176,4 +177,5 @@ namespace ArbUt {
 /// @fn ArbUt::SignalHandling::loaded()
 /// @brief Whether or not the signal handler is loaded
 
+#endif // SIGNAL_HANDLING
 #endif // ARBUTILS_SIGNALHANDLING_HPP