-define Require/working-make
- echo 'all: test' > $(TMP_DIR)/check.mk
- echo 'e0 = $$$$(foreach s,foobar,$$$$(eval $$$$s:))' >> $(TMP_DIR)/check.mk
- echo 'e1 = $$$$(foreach s,foobar, $$$$(eval $$$$s:))' >> $(TMP_DIR)/check.mk
- echo 'test: $$$$(strip $$$$(e0)) $$$$(strip $$$$(e1))' >> $(TMP_DIR)/check.mk
- $(NO_TRACE_MAKE) -f $(TMP_DIR)/check.mk
-endef
-
-$(eval $(call Require,working-make, \
- Please install GNU make v3.81 or later. (This version has bugs) \
-))
-
-define Require/case-sensitive-fs
- rm -f $(TMP_DIR)/test.*
- touch $(TMP_DIR)/test.fs
- [ \! -f $(TMP_DIR)/test.FS ]
-endef
-
-$(eval $(call Require,case-sensitive-fs, \
- OpenWrt can only be built on a case-sensitive filesystem \
-))
-
-define Require/working-gcc
+$(eval $(call TestHostCommand,working-make, \
+ Please install GNU make v3.81 or later. (This version has bugs), \
+ $(MAKE) -v | grep -E 'Make (3\.8[1-9]|3\.9[0-9]|[4-9]\.)'))
+
+$(eval $(call TestHostCommand,case-sensitive-fs, \
+ LEDE can only be built on a case-sensitive filesystem, \
+ rm -f $(TMP_DIR)/test.*; touch $(TMP_DIR)/test.fs; \
+ test ! -f $(TMP_DIR)/test.FS))
+
+$(eval $(call TestHostCommand,proper-umask, \
+ Please build with umask 022 - other values produce broken packages, \
+ umask | grep -xE 00[012][012]))
+
+$(eval $(call SetupHostCommand,gcc, \
+ Please install the GNU C Compiler (gcc), \
+ $(CC) --version | grep gcc, \
+ gcc --version | grep gcc, \
+ gcc49 --version | grep gcc, \
+ gcc48 --version | grep gcc, \
+ gcc47 --version | grep gcc, \
+ gcc46 --version | grep gcc, \
+ gcc --version | grep Apple.LLVM ))
+
+$(eval $(call TestHostCommand,working-gcc, \
+ Please reinstall the GNU C Compiler - it appears to be broken, \
+ echo 'int main(int argc, char **argv) { return 0; }' | \
+ gcc -x c -o $(TMP_DIR)/a.out -))
+
+$(eval $(call SetupHostCommand,g++, \
+ Please install the GNU C++ Compiler (g++), \
+ $(CXX) --version | grep g++, \
+ g++ --version | grep g++, \
+ g++49 --version | grep g++, \
+ g++48 --version | grep g++, \
+ g++47 --version | grep g++, \
+ g++46 --version | grep g++, \
+ g++ --version | grep Apple.LLVM ))
+
+$(eval $(call TestHostCommand,working-g++, \
+ Please reinstall the GNU C++ Compiler - it appears to be broken, \