usage of autogenerated dependencies and documentation update

git-svn-id: https://svn.pengutronix.de/svn/ptxdist/trunks/ptxdist-0.9-trunk@3849 33e552b5-05e3-0310-8538-816dae2090ed

3 files changed, 27 insertions, 19 deletions

diff --git a/rules/Kconfig b/rules/Kconfig
index fac2ebbcf..512dd43b8 100644
--- a/rules/Kconfig
+++ b/rules/Kconfig
@@ -206,5 +206,6 @@ source "rules/cfgsh.in"
 source "rules/cyclictest.in"
 source "rules/dialog.in"
 source "rules/e2tools.in"
+source "rules/flex.make"
 endmenu
 
diff --git a/rules/flex.in b/rules/flex.in
index 9a084a0e3..ef16c2b8f 100644
--- a/rules/flex.in
+++ b/rules/flex.in
@@ -1 +1,21 @@
-# FIXME: There should be a *.in for this package
+config FLEX
+        bool
+        default N
+        depends on BROKEN
+        prompt "FLEX"
+	help
+	  FLEX is a tool for generating scanners: programs which 
+	  recognized lexical patterns in text. flex reads the given 
+	  input files for a description of a scanner to generate. 
+	  The description is in the form of pairs of regular expressions 
+	  and C code, called rules. flex generates as output a C source
+ 	  file, lex.yy.c, which defines a routine yylex().  
+	  
+	  This file is compiled and linked with the -lfl library to 
+	  produce an executable. When the executable is run, it 
+	  analyzes its input for occurrences of the regular
+ 	  expressions. Whenever it finds one, it executes the 
+	  corresponding C code.
+
+comment "FLEX is broken, please send a patch"
+        depends on !BROKEN
diff --git a/rules/flex.make b/rules/flex.make
index 266913358..39d9d451e 100644
--- a/rules/flex.make
+++ b/rules/flex.make
@@ -49,9 +49,7 @@ $(FLEX_SOURCE):
 
 flex_extract: $(STATEDIR)/flex.extract
 
-flex_extract_deps = $(STATEDIR)/flex.get
-
-$(STATEDIR)/flex.extract: $(flex_extract_deps)
+$(STATEDIR)/flex.extract: $(flex_extract_deps_default)
 	@$(call targetinfo, $@)
 	@$(call clean, $(FLEX_DIR))
 	@$(call extract, $(FLEX_SOURCE))
@@ -64,13 +62,6 @@ $(STATEDIR)/flex.extract: $(flex_extract_deps)
 
 flex_prepare: $(STATEDIR)/flex.prepare
 
-#
-# dependencies
-#
-flex_prepare_deps = \
-	$(STATEDIR)/flex.extract \
-	$(STATEDIR)/virtual-xchain.install
-
 FLEX_PATH	=  PATH=$(CROSS_PATH)
 FLEX_ENV 	=  $(CROSS_ENV)
 
@@ -79,7 +70,7 @@ FLEX_ENV 	=  $(CROSS_ENV)
 #
 FLEX_AUTOCONF =  $(CROSS_AUTOCONF_USR)
 
-$(STATEDIR)/flex.prepare: $(flex_prepare_deps)
+$(STATEDIR)/flex.prepare: $(flex_prepare_deps_default)
 	@$(call targetinfo, $@)
 	@$(call clean, $(FLEX_DIR)/config.cache)
 	cd $(FLEX_DIR) && \
@@ -93,9 +84,7 @@ $(STATEDIR)/flex.prepare: $(flex_prepare_deps)
 
 flex_compile: $(STATEDIR)/flex.compile
 
-flex_compile_deps = $(STATEDIR)/flex.prepare
-
-$(STATEDIR)/flex.compile: $(flex_compile_deps)
+$(STATEDIR)/flex.compile: $(flex_compile_deps_default)
 	@$(call targetinfo, $@)
 	cd $(FLEX_DIR) && $(FLEX_ENV) $(FLEX_PATH) make
 	@$(call touch, $@)
@@ -106,7 +95,7 @@ $(STATEDIR)/flex.compile: $(flex_compile_deps)
 
 flex_install: $(STATEDIR)/flex.install
 
-$(STATEDIR)/flex.install: $(STATEDIR)/flex.compile
+$(STATEDIR)/flex.install: $(flex_install_deps_default)
 	@$(call targetinfo, $@)
 	@$(call install, FLEX)
 	@$(call touch, $@)
@@ -117,9 +106,7 @@ $(STATEDIR)/flex.install: $(STATEDIR)/flex.compile
 
 flex_targetinstall: $(STATEDIR)/flex.targetinstall
 
-flex_targetinstall_deps = $(STATEDIR)/flex.compile
-
-$(STATEDIR)/flex.targetinstall: $(flex_targetinstall_deps)
+$(STATEDIR)/flex.targetinstall: $(flex_targetinstall_deps_default)
 	@$(call targetinfo, $@)
 	@$(call touch, $@)