diff --git a/nspr/config/rules.mk b/nspr/config/rules.mk
index 8f3f926..1ddfffd 100644
--- a/nspr/config/rules.mk
+++ b/nspr/config/rules.mk
@@ -113,7 +113,8 @@ endif
 
 ifndef TARGETS
 ifeq (,$(filter-out WINNT WINCE,$(OS_ARCH)))
-TARGETS		= $(LIBRARY) $(SHARED_LIBRARY) $(IMPORT_LIBRARY)
+ifdef BUILD_SHARED_LIBS
+TARGETS		= $(SHARED_LIBRARY) $(IMPORT_LIBRARY)
 ifdef MOZ_DEBUG_SYMBOLS
 ifdef MSC_VER
 ifneq (,$(filter-out 1100 1200,$(MSC_VER)))
@@ -122,7 +123,14 @@ endif
 endif
 endif
 else
-TARGETS		= $(LIBRARY) $(SHARED_LIBRARY)
+TARGETS		= $(LIBRARY)
+endif
+else
+ifdef BUILD_SHARED_LIBS
+TARGETS		= $(SHARED_LIBRARY)
+else
+TARGETS		= $(LIBRARY)
+endif
 endif
 endif
 
diff --git a/nspr/lib/ds/Makefile.in b/nspr/lib/ds/Makefile.in
index fa8c783..b102b04 100644
--- a/nspr/lib/ds/Makefile.in
+++ b/nspr/lib/ds/Makefile.in
@@ -131,7 +131,7 @@ endif
 export:: $(TARGETS)
 	$(INSTALL) -m 444 $(HEADERS) $(dist_includedir)
 	$(INSTALL) -m 444 $(TARGETS) $(dist_libdir)
-ifdef SHARED_LIBRARY
+ifdef BUILD_SHARED_LIBS
 ifeq ($(OS_ARCH),HP-UX)
 	$(INSTALL) -m 755 $(SHARED_LIBRARY) $(dist_libdir)
 	$(INSTALL) -m 755 $(SHARED_LIBRARY) $(dist_bindir)
diff --git a/nspr/lib/libc/src/Makefile.in b/nspr/lib/libc/src/Makefile.in
index 9ef2007..4f5ddbe 100644
--- a/nspr/lib/libc/src/Makefile.in
+++ b/nspr/lib/libc/src/Makefile.in
@@ -132,7 +132,7 @@ endif
 
 export:: $(TARGETS)
 	$(INSTALL) -m 444 $(TARGETS) $(dist_libdir)
-ifdef SHARED_LIBRARY
+ifdef BUILD_SHARED_LIBS
 ifeq ($(OS_ARCH),HP-UX)
 	$(INSTALL) -m 755 $(SHARED_LIBRARY) $(dist_libdir)
 	$(INSTALL) -m 755 $(SHARED_LIBRARY) $(dist_bindir)
diff --git a/nspr/pr/src/Makefile.in b/nspr/pr/src/Makefile.in
index a9e86f5..88e626e 100644
--- a/nspr/pr/src/Makefile.in
+++ b/nspr/pr/src/Makefile.in
@@ -325,7 +325,7 @@ export::
 
 build:: $(TARGETS)
 	$(INSTALL) -m 444 $(TARGETS) $(dist_libdir)
-ifdef SHARED_LIBRARY
+ifdef BUILD_SHARED_LIBS
 ifeq ($(OS_ARCH),HP-UX)
 	$(INSTALL) -m 755 $(SHARED_LIBRARY) $(dist_libdir)
 	$(INSTALL) -m 755 $(SHARED_LIBRARY) $(dist_bindir)