diff --git a/pkgs/applications/networking/mailreaders/thunderbird/thunderbird-build-deps.patch b/pkgs/applications/networking/mailreaders/thunderbird/thunderbird-build-deps.patch
new file mode 100644
index 000000000000..ac074e8c8812
--- /dev/null
+++ b/pkgs/applications/networking/mailreaders/thunderbird/thunderbird-build-deps.patch
@@ -0,0 +1,21 @@
+diff -x _inst -x _build -x .svn -ur comm-miramar/config/rules.mk comm-miramar.after/config/rules.mk
+--- comm-miramar/config/rules.mk	2011-06-24 22:13:31.000000000 +0200
++++ comm-miramar/config/rules.mk	2011-08-15 12:27:07.305556040 +0200
+@@ -851,9 +851,13 @@
+ 
+ ifndef _LIBNAME_RELATIVE_PATHS
+ 
+-LIBS_DEPS += $(filter -l%, $(LIBS))
+-HOST_LIBS_DEPS += $(filter -l%, $(HOST_LIBS))
+-DSO_LDOPTS_DEPS += $(filter -l%, $(EXTRA_DSO_LDOPTS))
++LIBS_DEPS += $(patsubst -l%,$(LIB_PREFIX)%$(DLL_SUFFIX),$(filter-out -lpthread -ldl -lrt -ljemalloc -lmozmalloc,$(filter -l%, $(LIBS))))
++HOST_LIBS_DEPS += $(patsubst -l%,$(LIB_PREFIX)%$(DLL_SUFFIX),$(filter-out -lpthread -ldl -lrt -ljemalloc -lmozmalloc,$(filter -l%, $(HOST_LIBS))))
++DSO_LDOPTS_DEPS += $(patsubst -l%,$(LIB_PREFIX)%$(DLL_SUFFIX),$(filter-out -lpthread -ldl -lrt -ljemalloc -lmozmalloc,$(filter -l%, $(EXTRA_DSO_LDOPTS))))
++
++LIBS_DEPS += $(patsubst -l%,$(LIB_PREFIX)%.$(LIB_SUFFIX),$(filter -ljemalloc -lmozmalloc, $(LIBS)))
++HOST_LIBS_DEPS += $(patsubst -l%,$(LIB_PREFIX)%.$(LIB_SUFFIX),$(filter -ljemalloc -lmozmalloc, $(HOST_LIBS)))
++DSO_LDOPTS_DEPS += $(patsubst -l%,$(LIB_PREFIX)%.$(LIB_SUFFIX),$(filter -ljemalloc -lmozmalloc, $(EXTRA_DSO_LDOPTS)))
+ 
+ _LIBDIRS = $(patsubst -L%,%,$(filter -L%, $(LIBS) $(HOST_LIBS) $(EXTRA_DSO_LDOPTS)))
+ ifneq (,$(_LIBDIRS))
+Seulement dans comm-miramar.after/config: rules.mk~