replace ghc-configure-c99.patch with upstream patch

https://fedoraproject.org/wiki/Changes/PortingToModernC

9394.patch

@@ -0,0 +1,43 @@
+From 480b5d6440bbbd0b89dabdb2dc957333056aa2a7 Mon Sep 17 00:00:00 2001
+From: Florian Weimer <fweimer@redhat.com>
+Date: Tue, 22 Nov 2022 15:23:50 +0100
+Subject: [PATCH] m4/fp_leading_underscore.m4: Avoid implicit exit function
+ declaration
+
+And switch to a new-style function definition.
+
+Fixes build issues with compilers that do not accept implicit function
+declarations.
+---
+ m4/fp_leading_underscore.m4 | 10 ++++------
+ 1 file changed, 4 insertions(+), 6 deletions(-)
+
+diff --git a/m4/fp_leading_underscore.m4 b/m4/fp_leading_underscore.m4
+index fde57c7625d..939cee3b69f 100644
+--- a/m4/fp_leading_underscore.m4
++++ b/m4/fp_leading_underscore.m4
+@@ -32,17 +32,15 @@ struct nlist xYzzY1[] = {{"xYzzY1", 0},{0}};
+ struct nlist xYzzY2[] = {{"_xYzzY2", 0},{0}};
+ #endif
+ 
+-int main(argc, argv)
+-int argc;
+-char **argv;
++int main(int argc, char **argv)
+ {
+ #if defined(HAVE_NLIST_H)
+     if(nlist(argv[0], xYzzY1) == 0 && xYzzY1[0].n_value != 0)
+-        exit(1);
++        return 1;
+     if(nlist(argv[0], xYzzY2) == 0 && xYzzY2[0].n_value != 0)
+-        exit(0);
++        return 0;
+ #endif
+-    exit(1);
++    return 1;
+ }]])],[fptools_cv_leading_underscore=yes],[fptools_cv_leading_underscore=no],[fptools_cv_leading_underscore=no])
+ ;;
+ esac]);
+-- 
+GitLab
+

ghc-configure-c99.patch

@@ -1,68 +0,0 @@
-Submitted upstream:
-
-  <https://gitlab.haskell.org/ghc/ghc/-/merge_requests/9394>
-
-From 6b218717ac85d6dc9104f470cac0b4fb594104f4 Mon Sep 17 00:00:00 2001
-From: Florian Weimer <fweimer@redhat.com>
-Date: Tue, 22 Nov 2022 15:23:50 +0100
-Subject: [PATCH] m4/fp_leading_underscore.m4: Avoid implicit exit function
- declaration
-Content-type: text/plain
-
-And switch to a new-style function definition.
-
-Fixes build issues with compilers that do not accept implicit function
-declarations.
-
-diff -ur ghc-8.10.7.orig/aclocal.m4 ghc-8.10.7/aclocal.m4
---- ghc-8.10.7.orig/aclocal.m4	2021-06-29 09:24:51.000000000 +0200
-+++ ghc-8.10.7/aclocal.m4	2023-01-12 12:48:11.461019327 +0100
-@@ -966,17 +966,15 @@
- struct nlist xYzzY2[] = {{"_xYzzY2", 0},{0}};
- #endif
- 
--int main(argc, argv)
--int argc;
--char **argv;
-+int main(int argc, char **argv)
- {
- #if defined(HAVE_NLIST_H)
-     if(nlist(argv[0], xYzzY1) == 0 && xYzzY1[0].n_value != 0)
--        exit(1);
-+        return 1;
-     if(nlist(argv[0], xYzzY2) == 0 && xYzzY2[0].n_value != 0)
--        exit(0);
-+        return 0;
- #endif
--    exit(1);
-+    return 1;
- }]])],[fptools_cv_leading_underscore=yes],[fptools_cv_leading_underscore=no],[fptools_cv_leading_underscore=no])
- ;;
- esac]);
-Only in ghc-8.10.7: aclocal.m4.orig
-diff -ur ghc-8.10.7.orig/configure ghc-8.10.7/configure
---- ghc-8.10.7.orig/configure	2021-08-26 19:15:31.000000000 +0200
-+++ ghc-8.10.7/configure	2023-01-12 12:48:23.461897380 +0100
-@@ -15709,17 +15709,15 @@
- struct nlist xYzzY2[] = {{"_xYzzY2", 0},{0}};
- #endif
- 
--int main(argc, argv)
--int argc;
--char **argv;
-+int main(int argc, char **argv)
- {
- #if defined(HAVE_NLIST_H)
-     if(nlist(argv[0], xYzzY1) == 0 && xYzzY1[0].n_value != 0)
--        exit(1);
-+        return 1;
-     if(nlist(argv[0], xYzzY2) == 0 && xYzzY2[0].n_value != 0)
--        exit(0);
-+        return 0;
- #endif
--    exit(1);
-+    return 1;
- }
- _ACEOF
- if ac_fn_c_try_run "$LINENO"
-Only in ghc-8.10.7: configure.orig

ghc.spec

@@ -114,8 +114,9 @@ Patch3: ghc-gen_contents_index-nodocs.patch
 # DerivedConstants.h not produced atomically
 Patch10: https://gitlab.haskell.org/ghc/ghc/-/commit/9aace0eaf6279f17368a1753b65afbdc466e8291.patch
 
-Patch11: ghc-configure-c99.patch
-
+# https://fedoraproject.org/wiki/Toolchain/PortingToModernC
+# https://gitlab.haskell.org/ghc/ghc/-/merge_requests/9394
+Patch11: https://gitlab.haskell.org/ghc/ghc/-/merge_requests/9394.patch
 
 # armv7hl patches
 Patch12: ghc-armv7-VFPv3D16--NEON.patch