[ptxdist] [RFC 2/2] ptxd_lib_dgen: recompile when certain global kconfig options change

[Roland Hieber <rhi@pengutronix.de>]

There are certain variables in the menu which influence the build
environment for all packages:

* enabling dev packages
* enabling debug packages
* changing the reproducible date (only influences target packages)
* (probably more, but this is all which I could come up with right now)

Add those settings to the respective package hashes, so the hash changes
when those variables are changed, and the respective packages are
rebuilt.

Signed-off-by: Roland Hieber <rhi@pengutronix.de>
---
A similar case exists for GLOBAL_IPV6_OPTION, but it only affects the
packages that are using it, and not the whole userspace.
---
 scripts/lib/ptxd_lib_dgen.awk     | 22 ++++++++++++++++++++++
 scripts/lib/ptxd_make_pkghash.awk | 13 +++++++++++++
 2 files changed, 35 insertions(+)

diff --git a/scripts/lib/ptxd_lib_dgen.awk b/scripts/lib/ptxd_lib_dgen.awk
index 17748111b5ea..2fe358a6825e 100644
--- a/scripts/lib/ptxd_lib_dgen.awk
+++ b/scripts/lib/ptxd_lib_dgen.awk
@@ -202,6 +202,28 @@ $1 ~ /^PTX_MAP_._SOURCE/ {
 
 #
 # parse the ptx- and platformconfig
+#
+$1 ~ /^PTXCONF_PROJECT_CREATE_DEVPKGS/ {
+	if (PTXDIST_OLD_MAKE)
+		print "VAR: " $0 >> PTXDIST_HASHLIST;
+	else {
+		print "ifdef PTXDIST_SETUP_ONCE"					> DGEN_DEPS_POST;
+		print "$(file >>" PTXDIST_HASHLIST ",VAR: " $1 "=$(" $1 "))"		> DGEN_DEPS_POST;
+		print "endif"								> DGEN_DEPS_POST;
+	}
+}
+
+$1 ~ /^PTXCONF_(DEBUG_PACKAGES|REPRODUCIBLE_TIMESTAMP)/ {
+	if (PTXDIST_OLD_MAKE)
+		print "TARGETVAR: " $0 >> PTXDIST_HASHLIST;
+	else {
+		print "ifdef PTXDIST_SETUP_ONCE"					> DGEN_DEPS_POST;
+		print "$(file >>" PTXDIST_HASHLIST ",TARGETVAR: " $1 "=$(" $1 "))"	> DGEN_DEPS_POST;
+		print "endif"								> DGEN_DEPS_POST;
+	}
+}
+
+#
 # record yes and module packages
 #
 $1 ~ /^PTXCONF_/ {
diff --git a/scripts/lib/ptxd_make_pkghash.awk b/scripts/lib/ptxd_make_pkghash.awk
index 2ecae47b48f5..461bb152318c 100755
--- a/scripts/lib/ptxd_make_pkghash.awk
+++ b/scripts/lib/ptxd_make_pkghash.awk
@@ -9,6 +9,8 @@
 BEGIN {
 	PTXDIST_TEMPDIR		= ENVIRON["PTXDIST_TEMPDIR"];
 	dirs = ""
+	vars = ""
+	targetvars = ""
 }
 
 $1 == "PATCHES:" {
@@ -30,6 +32,14 @@ $1 == "RULES:" {
 	rules[pkg] = rules[pkg] " " rule
 }
 
+$1 == "VAR:" {
+	vars = $2 " " vars
+}
+
+$1 == "TARGETVAR:" {
+	targetvars = $2 " " targetvars
+}
+
 function dump_file(src, dst, tmp) {
 	if (!src)
 		return
@@ -46,6 +56,9 @@ function dump_file(src, dst, tmp) {
 END {
 	for (pkg in rules) {
 		f1 = PTXDIST_TEMPDIR "/pkghash-" pkg
+		printf vars "\n" >> f1
+		if ( pkg !~ /^HOST_/ )
+			printf targetvars "\n" >> f1
 		n = split(rules[pkg], cfgs)
 		for (rule = 1; rule <= n; rule++) {
 			dump_file(cfgs[rule], f1)
-- 
2.30.0


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