57 lines
2.0 KiB
Diff
57 lines
2.0 KiB
Diff
From ccfe20a89b3099f17f22971995ace787356ed5f4 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Jan=20Pokorn=C3=BD?= <jpokorny@redhat.com>
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Date: Fri, 6 Oct 2017 17:17:26 +0200
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Subject: [PATCH 2/6] build: configure: run attribute section test through
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run-time assertion
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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It's unclear why the apparently run-time test hasn't been set to that
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effect, mere compilability was tested so far.
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Also, based on feedback by Ferenc Wágner, unify and increase usability
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of the run-time error signalling through assertions.
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Signed-off-by: Jan Pokorný <jpokorny@redhat.com>
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---
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configure.ac | 22 +++++++++++++---------
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1 file changed, 13 insertions(+), 9 deletions(-)
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diff --git a/configure.ac b/configure.ac
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index 22630ba..478194c 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -620,15 +620,19 @@ AC_SUBST(HAVE_SLOW_TESTS)
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if test "x${GCC}" = xyes; then
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AC_MSG_CHECKING([whether GCC supports __attribute__((section()) + ld supports orphan sections])
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if test "x${ac_cv_link_attribute_section}" = x ; then
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- AC_TRY_LINK([#include <assert.h>
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- extern void * __start___verbose, * __stop___verbose;],
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- [static int my_var __attribute__((section("__verbose"))) = 5;
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- if (__start___verbose == __stop___verbose) assert(0);
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- if (my_var == 5) return 0;
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- else return -1;
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- ],
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- [gcc_has_attribute_section=yes],
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- [gcc_has_attribute_section=no])
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+ AC_TRY_RUN(
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+ AC_LANG_PROGRAM(
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+ [[#include <assert.h>
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+ extern void * __start___verbose, * __stop___verbose;]],
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+ [[static int my_var __attribute__((section("__verbose"))) = 5;
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+ assert("non-empty data section"
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+ && __start___verbose != __stop___verbose);
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+ assert("no data section value loss"
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+ && my_var == 5);]]
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+ ),
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+ [gcc_has_attribute_section=yes],
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+ [gcc_has_attribute_section=no]
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+ )
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else
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gcc_has_attribute_section=${ac_cv_link_attribute_section}
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fi
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--
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2.14.2
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