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-rw-r--r--Makefile13
-rw-r--r--include/prereq.mk118
-rw-r--r--rules.mk1
3 files changed, 132 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index 5b966b752c..25f60e1e54 100644
--- a/Makefile
+++ b/Makefile
@@ -81,11 +81,24 @@ toolchain/%: FORCE
@[ -f .config ] || $(NO_TRACE_MAKE) menuconfig
@$< -D .config Config.in &> /dev/null
+.prereq: $(TOPDIR)/include/prereq.mk .pkginfo
+ @$(NO_TRACE_MAKE) -s -f $(TOPDIR)/include/prereq.mk prereq 2>/dev/null || { \
+ echo "Prerequisite check failed. Use FORCE=1 to override."; \
+ false; \
+ }
+ @touch $@
+
+prereq: .prereq FORCE
+
download: .config FORCE
$(MAKE) toolchain/download
$(MAKE) package/download
$(MAKE) target/download
+ifeq ($(FORCE),)
+world: .prereq
+endif
+
world: .config FORCE
$(MAKE) toolchain/install
$(MAKE) target/compile
diff --git a/include/prereq.mk b/include/prereq.mk
new file mode 100644
index 0000000000..c51953b619
--- /dev/null
+++ b/include/prereq.mk
@@ -0,0 +1,118 @@
+#
+# Copyright (C) 2006 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+include $(INCLUDE_DIR)/verbose.mk
+
+$(TMP_DIR):
+ mkdir -p $@
+
+prereq:
+ @echo
+ @if [ -f $(TMP_DIR)/.prereq-error ]; then \
+ cat $(TMP_DIR)/.prereq-error; \
+ echo; \
+ rm -rf $(TMP_DIR); \
+ false; \
+ fi
+ @rm -rf $(TMP_DIR)
+ @mkdir -p $(TMP_DIR)
+
+define Require
+ ifeq ($$(CHECK_$(1)),)
+ prereq: prereq-$(1)
+
+ prereq-$(1): $(TMP_DIR) FORCE
+ @echo -n "Checking '$(1)'... "
+ @if $(NO_TRACE_MAKE) -f $(INCLUDE_DIR)/prereq.mk check-$(1) >/dev/null 2>/dev/null; then \
+ echo 'ok.'; \
+ else \
+ echo 'failed.'; \
+ echo -e "$(strip $(2))" >> $(TMP_DIR)/.prereq-error; \
+ fi
+
+ check-$(1): FORCE
+ $(call Require/$(1))
+ CHECK_$(1):=1
+ endif
+endef
+
+
+define RequireCommand
+ define Require/$(1)
+ which $(1)
+ endef
+
+ $$(eval $$(call Require,$(1),$(2)))
+endef
+
+# Required for the toolchain
+define Require/working-make
+ echo 'all: test' > $(TMP_DIR)/check.mk
+ echo 'e0 = $$$$(foreach s,foobar,$$$$(eval $$$$s:))' >> $(TMP_DIR)/check.mk
+ echo 'e1 = $$$$(foreach s,foobar, $$$$(eval $$$$s:))' >> $(TMP_DIR)/check.mk
+ echo 'test: $$$$(strip $$$$(e0)) $$$$(strip $$$$(e1))' >> $(TMP_DIR)/check.mk
+ $(NO_TRACE_MAKE) -f $(TMP_DIR)/check.mk
+endef
+
+$(eval $(call Require,working-make, \
+ Your make version is buggy. Please install GNU make v3.81 or later. \
+))
+
+define Require/working-gcc
+ echo 'int main(int argc, char **argv) { return 0; }' | \
+ gcc -x c -o $(TMP_DIR)/a.out -
+endef
+
+$(eval $(call Require,working-gcc, \
+ No working GNU C Compiler was found on your system. \
+))
+
+define Require/working-g++
+ echo 'int main(int argc, char **argv) { return 0; }' | \
+ g++ -x c++ -o $(TMP_DIR)/a.out -lstdc++ -
+endef
+
+$(eval $(call Require,working-g++, \
+ No working GNU C++ Compiler was found on your system. \
+))
+
+define Require/zlib
+ echo 'int main(int argc, char **argv) { gzdopen(0, "rb"); return 0; }' | \
+ gcc -x c -o $(TMP_DIR)/a.out -lz -
+endef
+
+$(eval $(call Require,zlib, \
+ The development version of zlib was not found on your system. \
+))
+
+
+$(eval $(call RequireCommand,bison, \
+ Please install GNU bison. \
+))
+
+$(eval $(call RequireCommand,flex, \
+ Please install flex. \
+))
+
+$(eval $(call RequireCommand,python, \
+ Please install python. \
+))
+
+$(eval $(call RequireCommand,unzip, \
+ Please install unzip. \
+))
+
+$(eval $(call RequireCommand,bzip2, \
+ Please install bzip2. \
+))
+
+$(eval $(call RequireCommand,patch, \
+ Please install patch. \
+))
+
+
diff --git a/rules.mk b/rules.mk
index 533bdc35c3..33e8354b8c 100644
--- a/rules.mk
+++ b/rules.mk
@@ -28,6 +28,7 @@ BIN_DIR:=$(TOPDIR)/bin
PACKAGE_DIR:=$(BIN_DIR)/packages
IPKG_TARGET_DIR:=$(PACKAGE_DIR)
BUILD_DIR:=$(TOPDIR)/build_$(ARCH)
+TMP_DIR:=$(BUILD_DIR)/tmp
STAMP_DIR:=$(BUILD_DIR)/stamp
TARGET_DIR:=$(BUILD_DIR)/root
IPKG_STATE_DIR:=$(TARGET_DIR)/usr/lib/ipkg