CMakeLists.txt: Detect glibmm-2.68 in addition to glibmm-2.4

On OS X with homebrew only glibmm-2.68 series is available. As far
as I can tell there are no breaking changes for PulseView on the
glibmm-2.68 ABI change.

This change still prefers glibmm-2.4 if found, and uses 2.4 if both
2.4 and 2.68 are available.

diff --git a/CMakeLists.txt b/CMakeLists.txt
index ffea00ef56b2dd17061699ff5c93e7d839d858ed..d5469883e5ba12e1aaa78ef61df850846fee889f 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -82,7 +82,15 @@ include(memaccess)
 find_package(PkgConfig)
 
 list(APPEND PKGDEPS glib-2.0>=2.28.0)
-list(APPEND PKGDEPS glibmm-2.4>=2.28.0)
+
+# Try to find the prefered glibmm-2.4. If not found then add glibmm-2.68
+# to the dependency list.
+pkg_check_modules(GLIBMM_2_4 glibmm-2.4>2.28.0)
+if(GLIBMM_2_4_FOUND)
+       list(APPEND PKGDEPS glibmm-2.4>=2.28.0)
+else()
+       list(APPEND PKGDEPS glibmm-2.68>=2.68.0)
+endif()
 
 if(ENABLE_FLOW)
        list(APPEND PKGDEPS gstreamermm-1.0>=1.8.0)
@@ -226,7 +234,11 @@ memaccess_check_unaligned_le(HAVE_UNALIGNED_LITTLE_ENDIAN_ACCESS)
 set(PV_TITLE PulseView)
 set(PV_VERSION_STRING "0.5.0")
 
-set(PV_GLIBMM_VERSION ${PKGDEPS_glibmm-2.4_VERSION})
+if(GLIBMM_2_4_FOUND)
+       set(PV_GLIBMM_VERSION ${PKGDEPS_glibmm-2.4_VERSION})
+else()
+       set(PV_GLIBMM_VERSION ${PKGDEPS_glibmm-2.68_VERSION})
+endif()
 
 include(GetGitRevisionDescription)