From 7d158c3e4f7cb4ea637126ec4aebb1782cd96a7a Mon Sep 17 00:00:00 2001
From: Patrick McDermott <patrick.mcdermott@libiquity.com>
Date: Mon, 15 Jul 2019 21:51:29 -0400
Subject: src/*/ppt-mkpkgs: Generate stub substvars file

---
diff --git a/changelog b/changelog
index 1f969df..ebcb11d 100644
--- a/changelog
+++ b/changelog
@@ -10,6 +10,8 @@ platconf-pkg-tools (3.0.0) trunk
     "# Generated by ppt-mkpkgs.  Do not edit."
   * build.mk files now provide "ppt-mkpkgs" and "ppt-rmpkgs" targets to
     conveniently run these tools through (prokit and) opkbuild.
+  * ppt-mkpkgs now generates a stub "substvars" file if one does not yet
+    exist.
 
  -- Patrick McDermott <patrick.mcdermott@libiquity.com>  Mon, 15 Jul 2019 17:59:07 -0400
 
diff --git a/src/2/ppt-mkpkgs b/src/2/ppt-mkpkgs
index 80d65cd..0567346 100644
--- a/src/2/ppt-mkpkgs
+++ b/src/2/ppt-mkpkgs
@@ -3,6 +3,7 @@
 set -eu
 
 PLAT=
+MAKE_SUBSTVARS=false
 
 info()
 {
@@ -40,6 +41,9 @@ make_base_pkg()
 		 \${Config-Base-Depends}
 		Description: "${PLAT}" platform configuration - base package
 		EOF
+	if ${MAKE_SUBSTVARS}; then
+		printf 'Config-Base-Depends:\n' >>'substvars'
+	fi
 	info 'Metadata for package "%s" generated.' "config-base"
 }
 
@@ -60,6 +64,9 @@ make_build_time_pkgs()
 			 \${Config-${pkg}-Depends}
 			Description: "${PLAT}" platform configuration for ${pkg}
 			EOF
+		if ${MAKE_SUBSTVARS}; then
+			printf 'Config-%s-Depends:\n' "${pkg}" >>'substvars'
+		fi
 		info 'Metadata for package "%s" generated.' \
 			"config-${pkg}-${PLAT}"
 	done
@@ -82,6 +89,9 @@ make_run_time_pkgs()
 			 \${Config-${pkg}-Depends}
 			Description: "${PLAT}" platform configuration for ${pkg}
 			EOF
+		if ${MAKE_SUBSTVARS}; then
+			printf 'Config-%s-Depends:\n' "${pkg}" >>'substvars'
+		fi
 		info 'Metadata for package "%s" generated.' \
 			"config-${pkg}"
 	done
@@ -91,10 +101,21 @@ main()
 {
 	PLAT="$(sed '1{s/^config-\([^ ][^ ]*\) (.*$/\1/;};1!q;' changelog)"
 
+	if ! [ -e 'substvars' ];
+		MAKE_SUBSTVARS=true
+		printf '# Generated by ppt-mkpkgs.  DO EDIT.\n' >'substvars'
+	fi
 	make_common_pkg
 	make_base_pkg
 	make_build_time_pkgs
 	make_run_time_pkgs
+	if ${MAKE_SUBSTVARS}; then
+		info 'Stub "substvars" file generated.  Set variables as '$(: \
+			)'needed.'
+	else
+		info 'Ensure "substvars" contains Config-*-Depends '$(: \
+			)'variables as needed.'
+	fi
 }
 
 main "${@}"
diff --git a/src/3/ppt-mkpkgs b/src/3/ppt-mkpkgs
index 20ee33f..41121f9 100644
--- a/src/3/ppt-mkpkgs
+++ b/src/3/ppt-mkpkgs
@@ -3,6 +3,7 @@
 set -eu
 
 PLAT=
+MAKE_SUBSTVARS=false
 
 info()
 {
@@ -40,6 +41,9 @@ make_base_pkg()
 		 \${Config-Base-Depends}
 		Description: "${PLAT}" platform configuration - base package
 		EOF
+	if ${MAKE_SUBSTVARS}; then
+		printf 'Config-Base-Depends:\n' >>'substvars'
+	fi
 	info 'Metadata for package "%s" generated.' "config-base"
 }
 
@@ -62,6 +66,9 @@ make_build_time_pkgs()
 			 \${Config-${pkg}-Depends}
 			Description: "${PLAT}" platform configuration for ${pkg}
 			EOF
+		if ${MAKE_SUBSTVARS}; then
+			printf 'Config-%s-Depends:\n' "${pkg}" >>'substvars'
+		fi
 		info 'Metadata for package "%s" generated.' \
 			"config-${pkg}-${PLAT}"
 	done
@@ -84,6 +91,9 @@ make_run_time_pkgs()
 			 \${Config-${pkg}-Depends}
 			Description: "${PLAT}" platform configuration for ${pkg}
 			EOF
+		if ${MAKE_SUBSTVARS}; then
+			printf 'Config-%s-Depends:\n' "${pkg}" >>'substvars'
+		fi
 		info 'Metadata for package "%s" generated.' \
 			"config-${pkg}"
 	done
@@ -93,10 +103,21 @@ main()
 {
 	PLAT="$(sed '1{s/^config-\([^ ][^ ]*\) (.*$/\1/;};1!q;' changelog)"
 
+	if ! [ -e 'substvars' ];
+		MAKE_SUBSTVARS=true
+		printf '# Generated by ppt-mkpkgs.  DO EDIT.\n' >'substvars'
+	fi
 	make_common_pkg
 	make_base_pkg
 	make_build_time_pkgs
 	make_run_time_pkgs
+	if ${MAKE_SUBSTVARS}; then
+		info 'Stub "substvars" file generated.  Set variables as '$(: \
+			)'needed.'
+	else
+		info 'Ensure "substvars" contains Config-*-Depends '$(: \
+			)'variables as needed.'
+	fi
 }
 
 main "${@}"
--
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