check for empty patch directories

[openwrt.git] / include / prereq-build.mk

diff --git a/include/prereq-build.mk b/include/prereq-build.mk
index d6396af..10bc68a 100644 (file)
--- a/include/prereq-build.mk
+++ b/include/prereq-build.mk
@@ -30,6 +30,16 @@ $(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
        echo 'int main(int argc, char **argv) { return 0; }' | \
                gcc -x c -o $(TMP_DIR)/a.out -
@@ -96,6 +106,10 @@ $(eval $(call RequireCommand,perl, \
        Please install perl. \
 ))
 
+$(eval $(call RequireCommand,wget, \
+       Please install wget. \
+))
+
 define Require/gnutar
        $(TAR) --version 2>&1 | grep GNU > /dev/null
 endef