build: skip rebuild of kernel images if the source did not change

[openwrt/staging/lynxis/omap.git] / include / toplevel.mk

diff --git a/include/toplevel.mk b/include/toplevel.mk
index 70f4691678b35e114f0c002260e49af8c3e58e23..0b5ac2686fd76e9a3298a4619079905e46f7cb09 100644 (file)
--- a/include/toplevel.mk
+++ b/include/toplevel.mk
@@ -22,8 +22,6 @@ endif
 HOSTCC ?= $(CC)
 export RELEASE
 export REVISION
-export LD_LIBRARY_PATH:=$(subst ::,:,$(if $(LD_LIBRARY_PATH),$(LD_LIBRARY_PATH):)$(TOPDIR)/staging_dir/host/lib)
-export DYLD_LIBRARY_PATH:=$(subst ::,:,$(if $(DYLD_LIBRARY_PATH),$(DYLD_LIBRARY_PATH):)$(TOPDIR)/staging_dir/host/lib)
 export GIT_CONFIG_PARAMETERS='core.autocrlf=false'
 export MAKE_JOBSERVER=$(filter --jobserver%,$(MAKEFLAGS))
 
@@ -41,6 +39,13 @@ unexport LPATH
 # make sure that a predefined CFLAGS variable does not disturb packages
 export CFLAGS=
 
+empty:=
+space:= $(empty) $(empty)
+path:=$(subst :,$(space),$(PATH))
+path:=$(filter-out .%,$(path))
+path:=$(subst $(space),:,$(path))
+export PATH:=$(path)
+
 unexport TAR_OPTIONS
 
 ifneq ($(shell $(HOSTCC) 2>&1 | grep clang),)
@@ -215,7 +220,7 @@ docs/clean: FORCE
        @$(_SINGLE)$(SUBMAKE) -C docs clean
 
 distclean:
-       rm -rf tmp build_dir staging_dir dl .config* feeds package/feeds package/openwrt-packages bin
+       rm -rf bin build_dir .config* dl feeds key-build* logs package/feeds package/openwrt-packages staging_dir tmp
        @$(_SINGLE)$(SUBMAKE) -C scripts/config clean
 
 ifeq ($(findstring v,$(DEBUG)),)