[bug#74784] [PATCH v2] gnu: hugs: Fix build with GCC.

[Homo via Guix-patches via <guix-patches@gnu.org>]

* gnu/packages/patches/hugs-fix-build.patch: New file.
* gnu/local.mk (dist_patch_DATA): Register it.
* gnu/packages/hugs.scm (hugs)[source]: Use it.
[native-inputs]: Remove.

Change-Id: I8b17f6c8a89fbc25ac9fe40b58962c83b08cbc21
---
Hi,

The patch itself is taken from https://aur.archlinux.org/cgit/aur.git/tree/hsbase_inline.patch?h=hugs
so for a while I was puzzled what to write when I don't understand C code.

etc/committer.scm doesn't work with these changes, either it backtraces or says "Nothing to do."
so instead I had to write manually, hopefully I didn't misunderstand what to write.

 gnu/local.mk                              |  1 +
 gnu/packages/hugs.scm                     |  7 +++----
 gnu/packages/patches/hugs-fix-build.patch | 23 +++++++++++++++++++++++
 3 files changed, 27 insertions(+), 4 deletions(-)
 create mode 100644 gnu/packages/patches/hugs-fix-build.patch

diff --git a/gnu/local.mk b/gnu/local.mk
index 39b142af5a..c3ec582a0e 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -1556,6 +1556,7 @@ dist_patch_DATA =						\
   %D%/packages/patches/htslib-for-stringtie.patch		\
   %D%/packages/patches/hubbub-sort-entities.patch		\
   %D%/packages/patches/hueplusplus-mbedtls.patch		\
+  %D%/packages/patches/hugs-fix-build.patch			\
   %D%/packages/patches/hurd-64bit.patch				\
   %D%/packages/patches/hurd-refcounts-assert.patch		\
   %D%/packages/patches/hurd-rumpdisk-no-hd.patch		\
diff --git a/gnu/packages/hugs.scm b/gnu/packages/hugs.scm
index c9915e4cd6..b6a97ea78c 100644
--- a/gnu/packages/hugs.scm
+++ b/gnu/packages/hugs.scm
@@ -23,7 +23,7 @@ (define-module (gnu packages hugs)
   #:use-module (guix packages)
   #:use-module (guix download)
   #:use-module (guix build-system gnu)
-  #:use-module (gnu packages gcc))
+  #:use-module (gnu packages))
 
 (define-public hugs
   (package
@@ -36,7 +36,8 @@ (define-public hugs
                           name "98-plus-" version ".tar.gz"))
       (sha256
        (base32
-        "1mdy4aq4campgmnpc2qwq7bsbfhaxfsqdghbyyz2wms4lnfcmyma"))))
+        "1mdy4aq4campgmnpc2qwq7bsbfhaxfsqdghbyyz2wms4lnfcmyma"))
+      (patches (search-patches "hugs-fix-build.patch"))))
     (build-system gnu-build-system)
     (arguments
      `(#:phases
@@ -71,8 +72,6 @@ (define-public hugs
                (("/bin/cp") (which "cp")))
              #t)))
        #:tests? #f)) ; no test target
-    ;; FIXME: Fails to build with GCC 5.
-    (native-inputs (list gcc-4.9))
     (home-page "https://www.haskell.org/hugs/")
     (synopsis "Functional programming system based on Haskell 98")
     (description
diff --git a/gnu/packages/patches/hugs-fix-build.patch b/gnu/packages/patches/hugs-fix-build.patch
new file mode 100644
index 0000000000..997baacc86
--- /dev/null
+++ b/gnu/packages/patches/hugs-fix-build.patch
@@ -0,0 +1,23 @@
+Fixes build with GCC 5 and later.
+
+diff --git a/packages/base/include/HsBase.h b/packages/base/include/HsBase.h
+index aa1a7fb..78d5b46 100644
+--- a/packages/base/include/HsBase.h
++++ b/packages/base/include/HsBase.h
+@@ -217,15 +217,7 @@ StgWord64 stg_integerToWord64 (StgInt sa, StgByteArray /* Really: mp_limb_t* */
+    when compiling to native code.
+    -------------------------------------------------------------------------- */
+ 
+-#ifndef INLINE
+-# if defined(_MSC_VER)
+-#  define INLINE extern __inline
+-# elif defined(__GNUC__)
+-#  define INLINE extern inline
+-# else
+-#  define INLINE inline
+-# endif
+-#endif
++#define INLINE inline
+ 
+ INLINE int __hscore_get_errno(void) { return errno; }
+ INLINE void __hscore_set_errno(int e) { errno = e; }
-- 
2.46.0