X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=blobdiff_plain;f=CMakeLists.txt;h=44f810e3c5fec71a299a166ee546a705ceb22ef8;hp=e21ace688663d4f4327fd161903140f4071c6048;hb=4da54b6be6a1ca19a2026908d48ae5c8d327ec86;hpb=39ccf9c39ec5c1ddeb5ba62f77cc811a2598bf72

diff --git a/CMakeLists.txt b/CMakeLists.txt
index e21ace68..44f810e3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -107,6 +107,55 @@ endif()
 # This will set ${CMAKE_THREAD_LIBS_INIT} to the correct, OS-specific value.
 find_package(Threads REQUIRED)
 
+
+# Check for explicit link against libatomic
+#
+# Depending on the toolchain, linking a program using atomic functions may need
+# "-latomic" explicitly passed to the linker
+#
+# This check first tests if atomics are available in the C-library, if not and
+# libatomic exists, then it runs the same test with -latomic added to the
+# linker flags.
+
+# Helper for checking for atomics
+function(check_working_cxx_atomics varname additional_lib)
+  include(CheckCXXSourceCompiles)
+  include(CMakePushCheckState)
+  cmake_push_check_state()
+  set(CMAKE_REQUIRED_FLAGS "-std=c++11")
+  set(CMAKE_REQUIRED_LIBRARIES "${additional_lib}")
+  set(CMAKE_REQUIRED_QUIET 1)
+  CHECK_CXX_SOURCE_COMPILES("
+#include <atomic>
+std::atomic<int> x;
+int main() {
+  return std::atomic_fetch_add_explicit(&x, 1, std::memory_order_seq_cst);
+}
+" ${varname})
+  cmake_pop_check_state()
+endfunction(check_working_cxx_atomics)
+
+# First check if atomics work without the library.
+# If not, check if the library exists, and atomics work with it.
+check_working_cxx_atomics(HAVE_CXX_ATOMICS_WITHOUT_LIB "")
+if(HAVE_CXX_ATOMICS_WITHOUT_LIB)
+  message(STATUS "Atomics provided by the C-library - yes")
+else()
+  message(STATUS "Atomics provided by the C-library - no")
+  find_library(LIBATOMIC_LIBRARY NAMES atomic PATH_SUFFIXES lib)
+  if(LIBATOMIC_LIBRARY)
+    check_working_cxx_atomics(HAVE_CXX_ATOMICS_WITH_LIB "${LIBATOMIC_LIBRARY}")
+    if (HAVE_CXX_ATOMICS_WITH_LIB)
+      message(STATUS "Atomics provided by libatomic - yes")
+    else()
+      message(STATUS "Atomics provided by libatomic - no")
+      message(FATAL_ERROR "Compiler must support std::atomic!")
+    endif()
+  else()
+    message(FATAL_ERROR "Compiler appears to require libatomic, but cannot find it.")
+  endif()
+endif()
+
 #===============================================================================
 #= System Introspection
 #-------------------------------------------------------------------------------
@@ -120,7 +169,7 @@ memaccess_check_unaligned_le(HAVE_UNALIGNED_LITTLE_ENDIAN_ACCESS)
 
 set(PV_TITLE PulseView)
 set(PV_DESCRIPTION "A GUI for sigrok")
-set(PV_VERSION_STRING "0.3.0")
+set(PV_VERSION_STRING "0.4.0")
 
 include(GetGitRevisionDescription)
 
@@ -244,6 +293,7 @@ set(pulseview_HEADERS
 	pv/prop/property.hpp
 	pv/prop/string.hpp
 	pv/toolbars/mainbar.hpp
+	pv/view/analogsignal.hpp
 	pv/view/cursor.hpp
 	pv/view/flag.hpp
 	pv/view/header.hpp
@@ -386,18 +436,17 @@ set(PULSEVIEW_LINK_LIBS
 	${Boost_LIBRARIES}
 	${QT_LIBRARIES}
 	${CMAKE_THREAD_LIBS_INIT}
+	${LIBATOMIC_LIBRARY}
 )
 
 if(STATIC_PKGDEPS_LIBS)
-	link_directories(${PKGDEPS_STATIC_LIBRARY_DIRS})
-	list(APPEND PULSEVIEW_LINK_LIBS ${PKGDEPS_STATIC_LIBRARIES})
+	list(APPEND PULSEVIEW_LINK_LIBS ${PKGDEPS_STATIC_LDFLAGS})
 if(WIN32)
 	# Workaround for a MinGW linking issue.
 	list(APPEND PULSEVIEW_LINK_LIBS "-llzma -llcms2")
 endif()
 else()
-	link_directories(${PKGDEPS_LIBRARY_DIRS})
-	list(APPEND PULSEVIEW_LINK_LIBS ${PKGDEPS_LIBRARIES})
+	list(APPEND PULSEVIEW_LINK_LIBS ${PKGDEPS_LDFLAGS})
 endif()
 
 if(WIN32)