gnu: http-parser: Include a pkg-config file.

This is useful when using http-parser in the node package, at least at version
12 of node.

* gnu/packages/web.scm (http-parser)[arguments]: Add a 'install-pkg-config
phase.

1 files changed, 25 insertions, 1 deletions

diff --git a/gnu/packages/web.scm b/gnu/packages/web.scm
index 0092477679..89f4a02c8e 100644
--- a/gnu/packages/web.scm
+++ b/gnu/packages/web.scm
@@ -5844,7 +5844,31 @@ into your tests.  It automatically starts up a HTTP server in a separate thread
              "CC=gcc" "library")
        #:phases
        (modify-phases %standard-phases
-         (delete 'configure))))
+         (delete 'configure)
+         (add-after 'install 'install-pkg-config
+           (lambda* (#:key outputs #:allow-other-keys)
+             (let* ((out (assoc-ref outputs "out"))
+                    (include (string-append out "/include"))
+                    (lib (string-append out "/lib"))
+                    (pkgconfig (string-append out "/lib/pkgconfig")))
+               (mkdir-p pkgconfig)
+               ;; The node build system expects this to exist, but a
+               ;; pkg-config file isn't provided in the upstream source.
+               (call-with-output-file (string-append pkgconfig "/http_parser.pc")
+                 (lambda (port)
+                   (format port "prefix=~a
+exec_prefix=${prefix}
+libdir=${exec_prefix}/lib
+includedir=${prefix}/include
+
+Name: HTTP Parser
+Description: Parser for HTTP messages written in C
+Version: ~a
+Libs: -L${libdir} -lhttp_parser
+Cflags: -I${includedir}
+"
+                           out ,version))))
+             #t)))))
     (synopsis "HTTP request/response parser for C")
     (description "This is a parser for HTTP messages written in C.  It parses
 both requests and responses.  The parser is designed to be used in