5 files changed, 13 insertions, 0 deletions
diff --git a/libpng12-dbg.pkg/control b/libpng12-dbg.pkg/control
index d4ce625..a2f714a 100644
--- a/libpng12-dbg.pkg/control
+++ b/libpng12-dbg.pkg/control
@@ -2,3 +2,6 @@ Architecture: any
 Platform: all
 Depends: libpng12.0 (= ${Binary-Version})
 Description: Library for reading and writing PNG files - debugging symbols
+ ${Common-Description}
+ .
+ This package provides debugging symbols for libpng.
diff --git a/libpng12-dev.pkg/control b/libpng12-dev.pkg/control
index eeeb9ef..e8bcd4d 100644
--- a/libpng12-dev.pkg/control
+++ b/libpng12-dev.pkg/control
@@ -2,3 +2,6 @@ Architecture: any
 Platform: all
 Depends: libpng12.0 (= ${Binary-Version})
 Description: Library for reading and writing PNG files - development files
+ ${Common-Description}
+ .
+ This package provides development files for libpng.
diff --git a/libpng12-doc.pkg/control b/libpng12-doc.pkg/control
index ebb125d..6e8ba31 100644
--- a/libpng12-doc.pkg/control
+++ b/libpng12-doc.pkg/control
@@ -2,3 +2,6 @@ Architecture: all
 Platform: all
 Depends: libpng12.0 (>= ${Source-Version})
 Description: Library for reading and writing PNG files - documentation
+ ${Common-Description}
+ .
+ This package provides documentation for libpng.
diff --git a/libpng12.0.pkg/control b/libpng12.0.pkg/control
index 1d8bbaa..89b5f92 100644
--- a/libpng12.0.pkg/control
+++ b/libpng12.0.pkg/control
@@ -1,3 +1,4 @@
 Architecture: any
 Platform: all
 Description: Library for reading and writing PNG files
+ ${Common-Description}
diff --git a/substvars b/substvars
new file mode 100644
index 0000000..c6d7c0a
--- /dev/null
+++ b/substvars
@@ -0,0 +1,3 @@
+Common-Description:
+ libpng is the reference library for use in applications that read, create, and
+ manipulate PNG (Portable Network Graphics) raster image files.