manpages: Remove entries for aio facility

* Also exclude entries for <monetary.h> and pthread_cancel

* Include intro entry for each section

packages/manpages/build.sh

@@ -4,6 +4,7 @@ TERMUX_PKG_LICENSE="GPL-2.0"
 TERMUX_PKG_MAINTAINER="@termux"
 TERMUX_PKG_VERSION=(5.13
 		    2017)
+TERMUX_PKG_REVISION=1
 TERMUX_PKG_SHA256=(614dae3efe7dfd480986763a2a2a8179215032a5a4526c0be5e899a25f096b8b
 		   ce67bb25b5048b20dad772e405a83f4bc70faf051afa289361c81f9660318bc3)
 TERMUX_PKG_SRCURL=(https://www.kernel.org/pub/linux/docs/man-pages/man-pages-${TERMUX_PKG_VERSION}.tar.xz
@@ -18,19 +19,27 @@ TERMUX_PKG_BUILD_IN_SRC=true
 # Problems with changing permissions of non-built files
 TERMUX_MAKE_PROCESSSES=1
 
+# Do not remove an entire section; intro should always be included.
+# Bionic libc does not provide <aio.h>, <monetary.h> or pthread_cancel.
 # man.7 and mdoc.7 is included with mandoc:
 # getconf man page included with the getconf package:
 # iconv-related manpages included with libiconv package:
 TERMUX_PKG_RM_AFTER_INSTALL="
-share/man/man1
+share/man/man0p/aio.h.0p
+share/man/man0p/monetary.h.0p
+share/man/man1p/getconf.1p
+share/man/man3/aio_*
+share/man/man3/aiocb.3
 share/man/man3/iconv.3
 share/man/man3/iconv_close.3
 share/man/man3/iconv_open.3
-share/man/man8
+share/man/man3/pthread_*cancel*.3
+share/man/man3p/aio_*
+share/man/man3p/pthread_*cancel*.3p
+share/man/man7/aio.7
 share/man/man7/man.7
 share/man/man7/mdoc.7
-share/man/man1p/getconf.1p"
-
+"
 
 termux_step_pre_configure() {
 	export TERMUX_MAKE_PROCESSES=1
@@ -39,3 +48,13 @@ termux_step_pre_configure() {
 	cd man-pages-posix-${TERMUX_PKG_VERSION[1]}
 	make install
 }
+
+termux_step_post_massage() {
+	local s
+	for s in 1 8; do
+		pushd share/man/man${s}
+		find . -mindepth 1 -maxdepth 1 ! -name "intro.${s}.gz" \
+				-exec rm -rf "{}" \;
+		popd
+	done
+}