Recognize functions added in future versions of Android.

* m4/gnulib-common.m4 (gl_CHECK_FUNCS_ANDROID): New macro.
* m4/aligned_alloc.m4 (gl_FUNC_ALIGNED_ALLOC): Use
gl_CHECK_FUNCS_ANDROID instead of AC_CHECK_FUNCS_ONCE.
* m4/freading.m4 (gl_FUNC_FREADING): Likewise.
* m4/fseterr.m4 (gl_FUNC_FSETERR): Likewise.
* m4/fwriting.m4 (gl_FUNC_FWRITING): Likewise.
* m4/getentropy.m4 (gl_FUNC_GETENTROPY): Likewise.
* m4/getlogin_r.m4 (gl_CHECK_FUNCS_ANDROID): Likewise.
* m4/getrandom.m4 (gl_FUNC_GETRANDOM): Likewise.
* m4/glob.m4 (gl_PREREQ_GLOB): Likewise.
* m4/spawn_h.m4 (gl_HAVE_POSIX_SPAWN): Likewise.
* doc/glibc-functions/getentropy.texi: Mark function as existing in
Android 9.0.
* doc/glibc-functions/getrandom.texi: Likewise.
* doc/posix-functions/pthread_attr_getinheritsched.texi: Likewise.
* doc/posix-functions/pthread_attr_setinheritsched.texi: Likewise.

4 files changed, 4 insertions, 4 deletions

diff --git a/doc/glibc-functions/getentropy.texi b/doc/glibc-functions/getentropy.texi
index 4cee078402..4b2551c465 100644
--- a/doc/glibc-functions/getentropy.texi
+++ b/doc/glibc-functions/getentropy.texi
@@ -21,7 +21,7 @@ Portability problems fixed by Gnulib:
 @itemize
 @item
 This function is missing on some platforms:
-glibc 2.24, Mac OS X 10.11, FreeBSD 11.0, NetBSD 9.0, OpenBSD 5.5, Minix 3.3, AIX 7.1, HP-UX 11.31, IRIX 6.5, Solaris 11.0, Cygwin 1.7.x, mingw, MSVC 14, Android 9.0.
+glibc 2.24, Mac OS X 10.11, FreeBSD 11.0, NetBSD 9.0, OpenBSD 5.5, Minix 3.3, AIX 7.1, HP-UX 11.31, IRIX 6.5, Solaris 11.0, Cygwin 1.7.x, mingw, MSVC 14, Android 8.1.
 @item
 This function is declared in @code{<sys/random.h>}, not in @code{<unistd.h>},
 on some platforms:
diff --git a/doc/glibc-functions/getrandom.texi b/doc/glibc-functions/getrandom.texi
index db817363cd..66e8588b32 100644
--- a/doc/glibc-functions/getrandom.texi
+++ b/doc/glibc-functions/getrandom.texi
@@ -21,7 +21,7 @@ Portability problems fixed by Gnulib:
 @itemize
 @item
 This function is missing on some platforms:
-glibc 2.24, macOS 11.1, FreeBSD 11.0, NetBSD 9.0, OpenBSD 6.7, Minix 3.3, AIX 7.1, HP-UX 11.31, IRIX 6.5, Solaris 11.0, Cygwin 1.7.x, mingw, MSVC 14, Android 9.0.
+glibc 2.24, macOS 11.1, FreeBSD 11.0, NetBSD 9.0, OpenBSD 6.7, Minix 3.3, AIX 7.1, HP-UX 11.31, IRIX 6.5, Solaris 11.0, Cygwin 1.7.x, mingw, MSVC 14, Android 8.1.
 @item
 This function has a different return type on some platforms:
 Solaris 11.4.
diff --git a/doc/posix-functions/pthread_attr_getinheritsched.texi b/doc/posix-functions/pthread_attr_getinheritsched.texi
index 12a5f955db..2d135a545a 100644
--- a/doc/posix-functions/pthread_attr_getinheritsched.texi
+++ b/doc/posix-functions/pthread_attr_getinheritsched.texi
@@ -14,5 +14,5 @@ Portability problems not fixed by Gnulib:
 @itemize
 @item
 This function is missing on some platforms:
-Minix 3.1.8, mingw, MSVC 14, Android 9.0.
+Minix 3.1.8, mingw, MSVC 14, Android 8.1.
 @end itemize
diff --git a/doc/posix-functions/pthread_attr_setinheritsched.texi b/doc/posix-functions/pthread_attr_setinheritsched.texi
index 652e41e616..6fad04c670 100644
--- a/doc/posix-functions/pthread_attr_setinheritsched.texi
+++ b/doc/posix-functions/pthread_attr_setinheritsched.texi
@@ -14,5 +14,5 @@ Portability problems not fixed by Gnulib:
 @itemize
 @item
 This function is missing on some platforms:
-Minix 3.1.8, mingw, MSVC 14, Android 9.0.
+Minix 3.1.8, mingw, MSVC 14, Android 8.1.
 @end itemize