Fix build against latest linuxsampler

source/backend/plugin/Makefile

@@ -19,7 +19,7 @@ LINK_FLAGS      += $(shell pkg-config --libs fluidsynth)
 endif
 
 ifeq ($(HAVE_LINUXSAMPLER),true)
-BUILD_CXX_FLAGS += $(shell pkg-config --cflags linuxsampler)
+BUILD_CXX_FLAGS += $(shell pkg-config --cflags linuxsampler) -DIS_CPP11=1
 LINK_FLAGS      += $(shell pkg-config --libs linuxsampler)
 endif
 

source/bridges/Makefile

@@ -69,7 +69,7 @@ NATIVE_LINK_FLAGS  += $(shell pkg-config --libs fluidsynth)
 endif
 
 ifeq ($(HAVE_LINUXSAMPLER),true)
-NATIVE_BUILD_FLAGS += -DWANT_LINUXSAMPLER
+NATIVE_BUILD_FLAGS += -DWANT_LINUXSAMPLER -DIS_CPP11=1
 NATIVE_BUILD_FLAGS += $(shell pkg-config --cflags linuxsampler)
 NATIVE_LINK_FLAGS  += $(shell pkg-config --libs linuxsampler)
 endif

source/discovery/Makefile

@@ -23,7 +23,7 @@ NATIVE_FLAGS    += $(shell pkg-config --cflags --libs fluidsynth) -DWANT_FLUIDSY
 endif
 
 ifeq ($(HAVE_LINUXSAMPLER),true)
-NATIVE_FLAGS    += $(shell pkg-config --cflags --libs linuxsampler) -DWANT_LINUXSAMPLER
+NATIVE_FLAGS    += $(shell pkg-config --cflags --libs linuxsampler) -DWANT_LINUXSAMPLER -DIS_CPP11=1
 endif
 
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