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Simplify clock_gettime Autoconf check (#13537)

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The clock_gettime() is found in libc on modern systems, except on
Solaris <= 10 and possible similar systems, it is in the rt library.

This checks if clock_gettime() exists in the libc, then it checks if rt
library has clock_gettime, prepends it to LIBS and defines the
HAVE_CLOCK_GETTIME symbol with the template from the AC_CHECK_FUNCS.

The ac_cv_func_clock_gettime is a cache variable set by AC_CHECK_FUNCS.
This commit is contained in:
Peter Kokot 2024-02-28 08:17:37 +01:00 • committed by GitHub
parent ba401cf8d9
commit 98bd66f99e
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GPG key ID: B5690EEEBB952194
1 changed files with 5 additions and 30 deletions
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35
sapi/fpm/config.m4
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@ -7,39 +7,14 @@ PHP_ARG_ENABLE([fpm],,
dnl Configure checks.
AC_DEFUN([AC_FPM_CLOCK],
[
have_clock_gettime=no
AC_MSG_CHECKING([for clock_gettime])
AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <time.h>]], [[struct timespec ts; clock_gettime(CLOCK_MONOTONIC, &ts);]])], [
have_clock_gettime=yes
AC_MSG_RESULT([yes])
], [
AC_MSG_RESULT([no])
])
if test "$have_clock_gettime" = "no"; then
AC_MSG_CHECKING([for clock_gettime in -lrt])
SAVED_LIBS="$LIBS"
LIBS="$LIBS -lrt"
AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <time.h>]], [[struct timespec ts; clock_gettime(CLOCK_MONOTONIC, &ts);]])], [
have_clock_gettime=yes
AC_MSG_RESULT([yes])
], [
LIBS="$SAVED_LIBS"
AC_MSG_RESULT([no])
])
fi
if test "$have_clock_gettime" = "yes"; then
AC_DEFINE([HAVE_CLOCK_GETTIME], 1, [do we have clock_gettime?])
fi
AC_CHECK_FUNCS([clock_gettime],,
[AC_SEARCH_LIBS([clock_gettime], [rt],
[ac_cv_func_clock_gettime=yes
AC_DEFINE([HAVE_CLOCK_GETTIME], [1])])])
have_clock_get_time=no
if test "$have_clock_gettime" = "no"; then
if test "$ac_cv_func_clock_gettime" = "no"; then
AC_MSG_CHECKING([for clock_get_time])
AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <mach/mach.h>