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| author | Ben Woosley <ben.woosley@gmail.com> | 2020-03-18 15:23:25 -0700 |
|---|---|---|
| committer | fanquake <fanquake@gmail.com> | 2020-04-02 12:31:54 +0800 |
| commit | a46484c8b3715725f5dc0b8ad1bf921880ed9af1 (patch) | |
| tree | c73218fdc972628f7fbba821de162267bed6af86 /configure.ac | |
| parent | 41fa2926d86a57c9623d34debef20746ee2f454a (diff) | |
| download | bitcoin-a46484c8b3715725f5dc0b8ad1bf921880ed9af1.tar.xz | |
build: Detect gmtime_* definitions via configure
This improves the portability of the codebase and fixes compilation
with mingw-w64 7.0+.
Co-authored-by: fanquake <fanquake@gmail.com>
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 1f85dd3a99..4cfd5c9274 100644 --- a/configure.ac +++ b/configure.ac @@ -906,6 +906,22 @@ if test "x$use_thread_local" = xyes || { test "x$use_thread_local" = xauto && te LDFLAGS="$TEMP_LDFLAGS" fi +dnl check for gmtime_r(), fallback to gmtime_s() if that is unavailable +dnl fail if neither are available. +AC_MSG_CHECKING(for gmtime_r) +AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <ctime>]], + [[ gmtime_r((const time_t *) nullptr, (struct tm *) nullptr); ]])], + [ AC_MSG_RESULT(yes); AC_DEFINE(HAVE_GMTIME_R, 1, [Define this symbol if gmtime_r is available]) ], + [ AC_MSG_RESULT(no); + AC_MSG_CHECKING(for gmtime_s); + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <ctime>]], + [[ gmtime_s((struct tm *) nullptr, (const time_t *) nullptr); ]])], + [ AC_MSG_RESULT(yes)], + [ AC_MSG_RESULT(no); AC_MSG_ERROR(Both gmtime_r and gmtime_s are unavailable) ] + ) + ] +) + dnl Check for different ways of gathering OS randomness AC_MSG_CHECKING(for Linux getrandom syscall) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <unistd.h> @@ -1596,6 +1612,7 @@ AC_SUBST(EVENT_LIBS) AC_SUBST(EVENT_PTHREADS_LIBS) AC_SUBST(ZMQ_LIBS) AC_SUBST(QR_LIBS) +AC_SUBST(HAVE_GMTIME_R) AC_SUBST(HAVE_FDATASYNC) AC_SUBST(HAVE_FULLFSYNC) AC_SUBST(HAVE_O_CLOEXEC) |