packages: Add `native-search-paths' field and honor it.

* guix/packages.scm (<search-path-specification>): New record type.
  (search-path-specification->sexp): New procedure.
  (<package>)[native-search-paths]: New field.
  (package-derivation): Accumulate the search paths, and pass them
  as #:search-paths toe BUILDER.
* guix/build-system/gnu.scm (gnu-build): Add #:search-paths.  Compute
  `implicit-search-paths'.  Pass #:search-paths in BUILDER.
* guix/build-system/perl.scm (perl-build): Add #:search-paths, pass it
  to BUILDER with the search paths of PERL.
* guix/build-system/cmake.scm (cmake-build): Add #:search-paths, pass it
  to BUILDER.
* guix/build-system/trivial.scm (trivial-build): Add #:search-paths,
  ignore it.
* guix/build/gnu-build-system.scm (set-paths): Add #:search-paths.
  Remove explicit settings of CPATH, LIBRARY_PATH, and PKG_CONFIG_PATH.
  Instead, walk SEARCH-PATHS and call `set-path-environment-variable'
  for them.
* guix/build/perl-build-system.scm (perl-build): Remove PERL5LIB setting.
* tests/packages.scm ("search paths"): New test.
* gnu/packages/bootstrap.scm (%bootstrap-guile)[raw]: Add
  #:search-paths.
  (%bootstrap-gcc): Add `native-search-paths' field.
* gnu/packages/perl.scm (perl): Likewise.
* gnu/packages/pkg-config.scm (pkg-config): Likewise.
* gnu/packages/glib.scm (intltool): Remove `arguments'.
* gnu/packages/avahi.scm (avahi): Remove #:phases.

1 files changed, 9 insertions, 1 deletions

diff --git a/gnu/packages/bootstrap.scm b/gnu/packages/bootstrap.scm
index 82a8db614f..eaad45a741 100644
--- a/gnu/packages/bootstrap.scm
+++ b/gnu/packages/bootstrap.scm
@@ -154,7 +154,8 @@ check whether everything is alright."
   (let ((raw (build-system
               (name "raw")
               (description "Raw build system with direct store access")
-              (build (lambda* (store name source inputs #:key outputs system)
+              (build (lambda* (store name source inputs
+                                     #:key outputs system search-paths)
                        (define (->store file)
                          (add-to-store store file #t "sha256"
                                        (or (search-bootstrap-binary file
@@ -352,6 +353,13 @@ exec ~a/bin/.gcc-wrapped -B~a/lib \
                         ("i686-linux"
                          (base32
                           "06wqs0xxnpw3hn0xjb4c9cs0899p1xwkcysa2rvzhvpra0c5vsg2")))))))))
+    (native-search-paths
+     (list (search-path-specification
+            (variable "CPATH")
+            (directories '("include")))
+           (search-path-specification
+            (variable "LIBRARY_PATH")
+            (directories '("lib" "lib64")))))
     (synopsis "Bootstrap binaries of the GNU Compiler Collection")
     (description #f)
     (home-page #f)