In a testdir on Android, I see this compilation error:
clang++ -DNO_INLINE_GETPASS=1 -DHAVE_CONFIG_H -DEXEEXT=\"\" -DEXEEXT=\"\" -I.
-I../../gltests -I.. -DGNULIB_STRICT_CHECKING=1 -DIN_GNULIB_TESTS=1 -I.
-I../../gltests -I.. -I../../gltests/.. -I../gllib -I../../gltests/../gllib
-I/data/data/com.termux/files/home/local/include -Wall -Wno-error -g -O2 -c -o
test-time-c++.o ../../gltests/test-time-c++.cc
In file included from ../../gltests/test-time-c++.cc:22:
../gllib/time.h:626:19: error: no member named 'timespec_get' in the global
namespace
_GL_CXXALIAS_SYS (timespec_get, int, (struct timespec *ts, int base));
~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../gllib/sched.h:264:20: note: expanded from macro '_GL_CXXALIAS_SYS'
return ::func; \
~~^
In file included from ../../gltests/test-time-c++.cc:22:
../gllib/time.h:627:19: error: use of undeclared identifier 'timespec_get'; did
you mean 'gnulib::timespec_get'?
_GL_CXXALIASWARN (timespec_get);
^
../gllib/time.h:626:19: note: 'gnulib::timespec_get' declared here
_GL_CXXALIAS_SYS (timespec_get, int, (struct timespec *ts, int base));
^
2 errors generated.
make[4]: *** [Makefile:23463: test-time-c++.o] Error 1
Here the problem is that timespec_get is only declared for a future API level:
/usr/include/time.h:int timespec_get(struct timespec* __ts, int __base)
__INTRODUCED_IN(29);
This patch fixes the error, like in those cases where we use
gl_CHECK_FUNCS_ANDROID.
2023-01-09 Bruno Haible <br...@clisp.org>
gettime: Fix compilation error in C++ mode on Android.
* m4/gettime.m4 (gl_CHECK_FUNC_TIMESPEC_GET): Also test whether
timespec_get is declared.
diff --git a/m4/gettime.m4 b/m4/gettime.m4
index 06f32fe26c..7e353fcd00 100644
--- a/m4/gettime.m4
+++ b/m4/gettime.m4
@@ -1,4 +1,4 @@
-# gettime.m4 serial 12
+# gettime.m4 serial 13
dnl Copyright (C) 2002, 2004-2006, 2009-2023 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
@@ -26,17 +26,24 @@ AC_DEFUN([gl_CHECK_FUNC_TIMESPEC_GET],
dnl We can't use AC_CHECK_FUNC here, because timespec_get() is defined as a
dnl static inline function in <time.h> on MSVC 14.
- AC_CACHE_CHECK([for timespec_get], [gl_cv_func_timespec_get],
- [AC_LINK_IFELSE(
- [AC_LANG_PROGRAM(
- [[#include <time.h>
- struct timespec ts;
- ]],
- [[return timespec_get (&ts, 0);]])
- ],
- [gl_cv_func_timespec_get=yes],
- [gl_cv_func_timespec_get=no])
- ])
+ dnl But at the same time, we need to notice a missing declaration, like
+ dnl gl_CHECK_FUNCS_ANDROID does.
+ AC_CHECK_DECL([timespec_get], , , [[#include <time.h>]])
+ if test $ac_cv_have_decl_timespec_get = yes; then
+ AC_CACHE_CHECK([for timespec_get], [gl_cv_func_timespec_get],
+ [AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[#include <time.h>
+ struct timespec ts;
+ ]],
+ [[return timespec_get (&ts, 0);]])
+ ],
+ [gl_cv_func_timespec_get=yes],
+ [gl_cv_func_timespec_get=no])
+ ])
+ else
+ gl_cv_func_timespec_get=no
+ fi
])
AC_DEFUN([gl_GETTIME_RES],
