build: enable building of development package

- always create .so and .a with the apk libary code
- create .pc file
- install headers and above mentioned files

Maintainers edit: merged commits, cleaned up sed script logic,
and few other minor fixes.

1 files changed, 2 insertions, 1 deletions

diff --git a/.gitignore b/.gitignore
index 20d053e..7245856 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,7 +11,8 @@ libfetch/*err.h
 *.o
 *.d
 *.cmd
-*.so
+*.so*
 *.5
 *.8
+*.pc
 config.mk