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check for localtime_r() and gmtime_r() functions during configuration

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Signed-off-by: Ivailo Monev <xakepa10@laimg.moc>
This commit is contained in:
Ivailo Monev 2020-01-07 17:40:17 +00:00
parent 196cc93bed
commit 8a014987a6
3 changed files with 21 additions and 32 deletions
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12
CMakeLists.txt
View file

@ -220,13 +220,13 @@ check_include_file(sys/time.h HAVE_SYS_TIME_H)
check_type_size(size_t QT_POINTER_SIZE)
# POSIX.1-2001
katie_optional_function(getpwuid_r "pwd.h")
katie_optional_function(getgrgid_r "grp.h")
katie_check_function(getpwuid_r "pwd.h")
katie_check_function(getgrgid_r "grp.h")
# XSI POSIX.1-2001 functions
katie_optional_function(strerror_r "string.h")
# POSIX.1-2008 functions
katie_require_function(realpath "stdlib.h")
katie_require_function(unsetenv "stdlib.h")
katie_check_function(strerror_r "string.h")
# SUSv2
katie_check_function(localtime_r "time.h")
katie_check_function(gmtime_r "time.h")
if(KATIE_COMPILER MATCHES "(gcc|clang)")
set(QT_VISIBILITY_AVAILABLE TRUE)

15
cmake/modules/KatieBuildMacros.cmake
View file

@ -17,10 +17,10 @@ macro(KATIE_WARNING MESSAGESTR)
endmacro()
# a macro to check for function presence in header, if function is found a
# definition is added. noteee that check_symbol_exists() and
# definition is added. note that check_symbol_exists() and
# check_function_exists() cache the result variables so they can be used
# anywhere
macro(KATIE_OPTIONAL_FUNCTION FORFUNCTION FROMHEADER)
macro(KATIE_CHECK_FUNCTION FORFUNCTION FROMHEADER)
check_symbol_exists("${FORFUNCTION}" "${FROMHEADER}" HAVE_${FORFUNCTION})
if(NOT HAVE_${FORFUNCTION})
check_function_exists("${FORFUNCTION}" HAVE_${FORFUNCTION})
@ -31,17 +31,6 @@ macro(KATIE_OPTIONAL_FUNCTION FORFUNCTION FROMHEADER)
endif()
endmacro()
# same as katie_optional_function(), however if not found an error is send
macro(KATIE_REQUIRE_FUNCTION FORFUNCTION FROMHEADER)
check_symbol_exists("${FORFUNCTION}" "${FROMHEADER}" HAVE_${FORFUNCTION})
if(NOT HAVE_${FORFUNCTION})
check_function_exists("${FORFUNCTION}" HAVE_${FORFUNCTION})
endif()
if(NOT HAVE_${FORFUNCTION})
message(SEND_ERROR "katie_require_function(${FORFUNCTION}, ${FROMHEADER}) failed")
endif()
endmacro()
# a macro to write data to file, does nothing if the file exists and its
# content is the same as the data
macro(KATIE_WRITE_FILE OUTFILE DATA)

26
src/core/tools/qdatetime.cpp
View file

@ -2781,14 +2781,14 @@ QDate QDate::currentDate()
time_t ltime;
time(&ltime);
#if !defined(QT_NO_THREAD) && defined(_POSIX_THREAD_SAFE_FUNCTIONS)
#if !defined(QT_NO_THREAD) && defined(QT_HAVE_LOCALTIME_R)
// use the reentrant version of localtime() where available
tzset();
struct tm res;
struct tm *t = localtime_r(&ltime, &res);
#else
struct tm *t = localtime(&ltime);
#endif // !QT_NO_THREAD && _POSIX_THREAD_SAFE_FUNCTIONS
#endif // !QT_NO_THREAD && QT_HAVE_LOCALTIME_R
d.jd = julianDayFromDate(t->tm_year + 1900, t->tm_mon + 1, t->tm_mday);
return d;
@ -2802,14 +2802,14 @@ QTime QTime::currentTime()
gettimeofday(&tv, Q_NULLPTR);
time_t ltime = tv.tv_sec;
#if !defined(QT_NO_THREAD) && defined(_POSIX_THREAD_SAFE_FUNCTIONS)
#if !defined(QT_NO_THREAD) && defined(QT_HAVE_LOCALTIME_R)
// use the reentrant version of localtime() where available
tzset();
struct tm res;
struct tm *t = localtime_r(&ltime, &res);
#else
struct tm *t = localtime(&ltime);
#endif
#endif // !QT_NO_THREAD && QT_HAVE_LOCALTIME_R
Q_CHECK_PTR(t);
ct.mds = msecsFromDecomposed(t->tm_hour, t->tm_min, t->tm_sec, tv.tv_usec / 1000);
@ -2824,14 +2824,14 @@ QDateTime QDateTime::currentDateTime()
gettimeofday(&tv, Q_NULLPTR);
time_t ltime = tv.tv_sec;
#if !defined(QT_NO_THREAD) && defined(_POSIX_THREAD_SAFE_FUNCTIONS)
#if !defined(QT_NO_THREAD) && defined(localtime_r)
// use the reentrant version of localtime() where available
tzset();
struct tm res;
struct tm *t = localtime_r(&ltime, &res);
#else
struct tm *t = localtime(&ltime);
#endif
#endif // !QT_NO_THREAD && QT_HAVE_LOCALTIME_R
QDateTime dt;
dt.d->time.mds = msecsFromDecomposed(t->tm_hour, t->tm_min, t->tm_sec, tv.tv_usec / 1000);
@ -2851,13 +2851,13 @@ QDateTime QDateTime::currentDateTimeUtc()
gettimeofday(&tv, Q_NULLPTR);
time_t ltime = tv.tv_sec;
#if !defined(QT_NO_THREAD) && defined(_POSIX_THREAD_SAFE_FUNCTIONS)
// use the reentrant version of localtime() where available
#if !defined(QT_NO_THREAD) && defined(QT_HAVE_GMTIME_R)
// use the reentrant version of gmtime_r() where available
struct tm res;
struct tm *t = gmtime_r(&ltime, &res);
#else
struct tm *t = gmtime(&ltime);
#endif
#endif // !QT_NO_THREAD && QT_HAVE_GMTIME_R
QDateTime dt;
dt.d->time.mds = msecsFromDecomposed(t->tm_hour, t->tm_min, t->tm_sec, tv.tv_usec / 1000);
@ -3484,14 +3484,14 @@ static QDateTimePrivate::Spec utcToLocal(QDate &date, QTime &time)
// won't overflow because of fakeDate
time_t secsSince1Jan1970UTC = toMSecsSinceEpoch_helper(fakeDate.toJulianDay(), QTime().msecsTo(time)) / 1000;
#if !defined(QT_NO_THREAD) && defined(_POSIX_THREAD_SAFE_FUNCTIONS)
#if !defined(QT_NO_THREAD) && defined(QT_HAVE_LOCALTIME_R)
// use the reentrant version of localtime() where available
tzset();
tm res;
tm *brokenDown = localtime_r(&secsSince1Jan1970UTC, &res);
#else
tm *brokenDown = localtime(&secsSince1Jan1970UTC);
#endif
#endif // !QT_NO_THREAD && QT_HAVE_LOCALTIME_R
if (!brokenDown) {
date = QDate(1970, 1, 1);
time = QTime();
@ -3526,13 +3526,13 @@ static void localToUtc(QDate &date, QTime &time, int isdst)
localTM.tm_year = fakeDate.year() - 1900;
localTM.tm_isdst = isdst;
time_t secsSince1Jan1970UTC = mktime(&localTM);
#if !defined(QT_NO_THREAD) && defined(_POSIX_THREAD_SAFE_FUNCTIONS)
#if !defined(QT_NO_THREAD) && defined(QT_HAVE_GMTIME_R)
// use the reentrant version of gmtime() where available
tm res;
tm *brokenDown = gmtime_r(&secsSince1Jan1970UTC, &res);
#else
tm *brokenDown = gmtime(&secsSince1Jan1970UTC);
#endif // !QT_NO_THREAD && _POSIX_THREAD_SAFE_FUNCTIONS
#endif // !QT_NO_THREAD && QT_HAVE_GMTIME_R
if (!brokenDown) {
date = QDate(1970, 1, 1);
time = QTime();