Building a testdir of all of gnulib on Android, in Termux, I see
these compilation errors:
../gllib/string.h:2066:19: error: use of undeclared identifier
'strerrorname_np'; did you mean 'gnulib::strerrorname_np'?
../gllib/string.h:974:19: error: use of undeclared identifier
'memset_explicit'; did you mean 'gnulib::memset_explicit'?
../gllib/time.h:726:19: error: use of undeclared identifier 'timespec_getres';
did you mean 'gnulib::timespec_getres'?
../gllib/unistd.h:1006:19: error: use of undeclared identifier
'copy_file_range'; did you mean 'gnulib::copy_file_range'?
This patch should fix them.
2025-03-20 Bruno Haible <br...@clisp.org>
Fix compilation errors in C++ mode on Android.
* lib/string.in.h (memset_explicit, strerrorname_np): Disable
_GL_CXXALIASWARN invocation on non-glibc systems.
* lib/time.in.h (timespec_getres): Likewise.
* lib/unistd.in.h (copy_file_range): Likewise.
diff --git a/lib/string.in.h b/lib/string.in.h
index 0093fea096..e6bf675151 100644
--- a/lib/string.in.h
+++ b/lib/string.in.h
@@ -434,7 +434,9 @@ _GL_FUNCDECL_SYS (memset_explicit, void *,
# endif
_GL_CXXALIAS_SYS (memset_explicit, void *, (void *__dest, int __c, size_t
__n));
# endif
+# if __GLIBC__ >= 2
_GL_CXXALIASWARN (memset_explicit);
+# endif
#elif defined GNULIB_POSIXCHECK
# undef memset_explicit
# if HAVE_RAW_DECL_MEMSET_EXPLICIT
@@ -1526,7 +1528,9 @@ _GL_FUNCDECL_SYS (strerrorname_np, const char *, (int
errnum), );
# endif
_GL_CXXALIAS_SYS (strerrorname_np, const char *, (int errnum));
# endif
+# if __GLIBC__ >= 2
_GL_CXXALIASWARN (strerrorname_np);
+# endif
#elif defined GNULIB_POSIXCHECK
# undef strerrorname_np
# if HAVE_RAW_DECL_STRERRORNAME_NP
diff --git a/lib/time.in.h b/lib/time.in.h
index 60801c972c..3ff16e3b3e 100644
--- a/lib/time.in.h
+++ b/lib/time.in.h
@@ -186,7 +186,9 @@ _GL_FUNCDECL_SYS (timespec_getres, int, (struct timespec
*ts, int base),
# endif
_GL_CXXALIAS_SYS (timespec_getres, int, (struct timespec *ts, int base));
# endif
+# if __GLIBC__ >= 2
_GL_CXXALIASWARN (timespec_getres);
+# endif
# elif defined GNULIB_POSIXCHECK
# undef timespec_getres
# if HAVE_RAW_DECL_TIMESPEC_GETRES
diff --git a/lib/unistd.in.h b/lib/unistd.in.h
index bfb4817726..56cc84f379 100644
--- a/lib/unistd.in.h
+++ b/lib/unistd.in.h
@@ -466,7 +466,9 @@ _GL_CXXALIAS_SYS (copy_file_range, ssize_t, (int ifd, off_t
*ipos,
int ofd, off_t *opos,
size_t len, unsigned flags));
# endif
+# if __GLIBC__ >= 2
_GL_CXXALIASWARN (copy_file_range);
+# endif
#elif defined GNULIB_POSIXCHECK
# undef copy_file_range
# if HAVE_RAW_DECL_COPY_FILE_RANGE
