08/11: gnu: libltdl: Explicity declare the _FILE_OFFSET_BITS we want.

[guix-commits]

dannym pushed a commit to branch wip-file-offset-bits-64
in repository guix.

commit 358970fed6cf6ec3bb475e7385db269754095051
Author: Danny Milosavljevic <dannym@scratchpost.org>
AuthorDate: Tue Sep 29 01:37:14 2020 +0200

    gnu: libltdl: Explicity declare the _FILE_OFFSET_BITS we want.
    
    * gnu/packages/autotools.scm 
(libltdl)[arguments]<#:phases>[ensure-file-offset-bits-64]:
    Explicity declare the _FILE_OFFSET_BITS we want.
---
 gnu/packages/autotools.scm | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/gnu/packages/autotools.scm b/gnu/packages/autotools.scm
index febaabc..38840e9 100644
--- a/gnu/packages/autotools.scm
+++ b/gnu/packages/autotools.scm
@@ -487,6 +487,16 @@ complexity of working with shared libraries across 
platforms.")
     (arguments
      '(#:configure-flags '("--enable-ltdl-install") ;really install it
        #:phases (modify-phases %standard-phases
+                  (add-after 'unpack 'ensure-file-offset-bits-64
+                    (lambda _
+                      (setenv "CFLAGS" "-D_FILE_OFFSET_BITS=64")
+                      (substitute* "libltdl/libltdl/lt__dirent.h"
+                       (("#define LT__DIRENT_H 1") "#define LT__DIRENT_H 1
+#if !defined(_FILE_OFFSET_BITS) || _FILE_OFFSET_BITS != 64
+#error \"libltdl was compiled with _FILE_OFFSET_BITS == 64, so you have to be, 
too (since it exports readdir)\"
+#endif
+"))
+                      #t))
                   (add-before 'configure 'change-directory
                     (lambda _ (chdir "libltdl") #t)))))