10fe305a8a
OBS-URL: https://build.opensuse.org/package/show/devel:languages:haskell/ghc?expand=0&rev=279
61 lines
2.1 KiB
Diff
61 lines
2.1 KiB
Diff
From ce3897ffd6e7c8b8f36b8e920168bac8c7f836ae Mon Sep 17 00:00:00 2001
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From: Ilias Tsitsimpis <iliastsi@debian.org>
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Date: Tue, 18 Sep 2018 17:45:17 +0200
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Subject: [PATCH] Fix check whether GCC supports __atomic_ builtins
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Summary:
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C11 atomics are never used because:
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* The program used for checking whether GCC supports
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__atomic_ builtins fails with the following error:
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```
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error: size mismatch in argument 2 of `__atomic_load`
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int test(int *x) { int y; __atomic_load(&x, &y, __ATOMIC_SEQ_CST); return x; }
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```
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* There is a typo when checking if CONF_GCC_SUPPORTS__ATOMICS equals YES,
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resulting in PRIM_CFLAGS and PRIM_EXTRA_LIBRARIES never being set.
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Reviewers: bgamari
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Reviewed By: bgamari
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Subscribers: rwbarton, erikd, carter
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Differential Revision: https://phabricator.haskell.org/D5154
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---
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libraries/ghc-prim/aclocal.m4 | 2 +-
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libraries/ghc-prim/configure.ac | 2 +-
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2 files changed, 2 insertions(+), 2 deletions(-)
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diff --git a/libraries/ghc-prim/aclocal.m4 b/libraries/ghc-prim/aclocal.m4
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index e5695385f2..81fc44c500 100644
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--- a/libraries/ghc-prim/aclocal.m4
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+++ b/libraries/ghc-prim/aclocal.m4
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@@ -5,7 +5,7 @@ AC_DEFUN([FP_GCC_SUPPORTS__ATOMICS],
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[
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AC_REQUIRE([AC_PROG_CC])
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AC_MSG_CHECKING([whether GCC supports __atomic_ builtins])
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- echo 'int test(int *x) { int y; __atomic_load(&x, &y, __ATOMIC_SEQ_CST); return x; }' > conftest.c
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+ echo 'int test(int *x) { int y; __atomic_load(x, &y, __ATOMIC_SEQ_CST); return y; }' > conftest.c
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if $CC -c conftest.c > /dev/null 2>&1; then
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CONF_GCC_SUPPORTS__ATOMICS=YES
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AC_MSG_RESULT([yes])
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diff --git a/libraries/ghc-prim/configure.ac b/libraries/ghc-prim/configure.ac
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index bacc89ccc8..8249be31a9 100644
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--- a/libraries/ghc-prim/configure.ac
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+++ b/libraries/ghc-prim/configure.ac
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@@ -8,7 +8,7 @@ dnl unregisterised, Sparc, and PPC backends.
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FP_GCC_SUPPORTS__ATOMICS
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AC_DEFINE([HAVE_C11_ATOMICS], [$CONF_GCC_SUPPORTS__ATOMICS], [Does GCC support __atomic primitives?])
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-if test "x$CONF_GCC_SUPPORTS__ATOMICS" = YES
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+if test "$CONF_GCC_SUPPORTS__ATOMICS" = "YES"
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then PRIM_CFLAGS=-DHAVE_C11_ATOMICS
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PRIM_EXTRA_LIBRARIES=atomic
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fi
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--
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2.13.7
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