GNU bug report logs - #45150
[PATCH 1/5] gnu: libid3tag: Install pkg-config file.

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From: Kei Kebreau <kkebreau <at> posteo.net>
To: 45150 <at> debbugs.gnu.org
Cc: Kei Kebreau <kkebreau <at> posteo.net>
Subject: [bug#45150] [PATCH 2/5] gnu: libmad: Install pkg-config file.
Date: Wed,  9 Dec 2020 17:13:30 -0500

* gnu/packages/mp3.scm (libmad)[arguments]: Add 'install-pkg-config phase.
---
 gnu/packages/mp3.scm | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/gnu/packages/mp3.scm b/gnu/packages/mp3.scm
index d5c8ee14b4..9dd6f5c4a7 100644
--- a/gnu/packages/mp3.scm
+++ b/gnu/packages/mp3.scm
@@ -81,7 +81,26 @@
           (lambda _
             ;; remove option that is not supported by gcc any more
             (substitute* "configure" ((" -fforce-mem") ""))
-            #t)))))
+            #t))
+        (add-after 'install 'install-pkg-config
+          (lambda* (#:key outputs #:allow-other-keys)
+            (let* ((out (assoc-ref outputs "out"))
+                   (pkg-config-dir (string-append out "/lib/pkgconfig")))
+              (mkdir-p pkg-config-dir)
+              (with-output-to-file (string-append pkg-config-dir "/mad.pc")
+                (lambda _
+                  (format #t
+                          "prefix=~@*~a~@
+                           libdir=${prefix}/lib~@
+                           includedir=${prefix}/include~@
+
+                           Name: libmad~@
+                           Description:~@
+                           Version: ~a~@
+                           Libs: -L${libdir} -lmad~@
+                           Cflags: -I${includedir}~%"
+                          out
+                          ,version)))))))))
    (synopsis "MPEG audio decoder")
    (description
     "MAD (MPEG Audio Decoder) supports MPEG-1 and the MPEG-2 extension to
-- 
2.29.2

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