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54 lines
2.7 KiB
Diff
54 lines
2.7 KiB
Diff
https://bitbucket.org/icl/papi/pull-requests/406
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From 3d09c90d892c845473ba92bb1e9ff0ead4f3eb84 Mon Sep 17 00:00:00 2001
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From: Florian Weimer <fweimer@redhat.com>
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Date: Mon, 28 Nov 2022 08:44:38 +0100
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Subject: [PATCH] configure: Avoid implicit ints and implicit function
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declarations
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Implicit ints and implicit function declarations were removed from
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the C language in 1999. Relying on them can cause spurious autoconf
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check failures with compilers that do not support them in the default
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language mode.
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--- a/configure.in
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+++ b/configure.in
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@@ -577,14 +577,16 @@ fi
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AC_MSG_CHECKING(for working gettid)
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AC_LINK_IFELSE([AC_LANG_SOURCE([#include <sys/types.h>
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- main() { pid_t a = gettid(); }])],
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+ #include <unistd.h>
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+ int main() { pid_t a = gettid(); }])],
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[AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_GETTID, 1, [Full gettid function])],
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[AC_MSG_RESULT(no)
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AC_MSG_CHECKING(for working syscall(SYS_gettid))
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AC_LINK_IFELSE([AC_LANG_SOURCE([#include <sys/types.h>
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#include <sys/syscall.h>
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- main() { pid_t a = syscall(SYS_gettid); }])],
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+ #include <unistd.h>
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+ int main() { pid_t a = syscall(SYS_gettid); }])],
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[AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_SYSCALL_GETTID, 1, [gettid syscall function])],
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[AC_MSG_RESULT(no)]) ])
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@@ -625,7 +627,7 @@ AC_ARG_WITH(walltimer,
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#include <stdio.h>
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#include <time.h>
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#include <syscall.h>
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- main() {
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+ int main() {
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struct timespec t1, t2;
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double seconds;
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if (syscall(__NR_clock_gettime,CLOCK_REALTIME_HR,&t1) == -1) exit(1);
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@@ -646,7 +648,7 @@ AC_ARG_WITH(walltimer,
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#include <stdio.h>
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#include <time.h>
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#include <syscall.h>
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- main() {
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+ int main() {
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struct timespec t1, t2;
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double seconds;
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if (syscall(__NR_clock_gettime,CLOCK_REALTIME,&t1) == -1) exit(1);
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--
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2.38.1
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