chore(main/libmcrypt): using configure option instead of modifying co…

…nfig.h

packages/libmcrypt/build.sh

@@ -3,19 +3,15 @@ TERMUX_PKG_DESCRIPTION="A library which provides a uniform interface to several
 TERMUX_PKG_LICENSE="GPL-2.0"
 TERMUX_PKG_MAINTAINER="@termux"
 TERMUX_PKG_VERSION="2.5.8"
-TERMUX_PKG_REVISION=4
+TERMUX_PKG_REVISION=5
 TERMUX_PKG_SRCURL=https://downloads.sourceforge.net/mcrypt/libmcrypt-$TERMUX_PKG_VERSION.tar.bz2
 TERMUX_PKG_SHA256=bf2f1671f44af88e66477db0982d5ecb5116a5c767b0a0d68acb34499d41b793
 TERMUX_PKG_BREAKS="libmcrypt-dev"
 TERMUX_PKG_REPLACES="libmcrypt-dev"
 TERMUX_PKG_BUILD_IN_SRC=true
 TERMUX_PKG_EXTRA_CONFIGURE_ARGS="--mandir=$TERMUX_PREFIX/share/man"
 
-termux_step_post_configure() {
-	# Fix for `error: call to undeclared library function 'memmove/calloc/malloc/memcpy/free/sprintf/etc.'` during running `build-all.sh`
-	# Probably it would be easier to add `-Wimplicit-function-declaration` to `CFLAGS`, but this solution feels more correct.
-	echo "#include <stdio.h>" >> "$TERMUX_PKG_SRCDIR/config.h"
-	echo "#include <stdlib.h>" >> "$TERMUX_PKG_SRCDIR/config.h"
-	echo "#include <string.h>" >> "$TERMUX_PKG_SRCDIR/config.h"
-	echo "#include <ctype.h>" >> "$TERMUX_PKG_SRCDIR/config.h"
+termux_step_pre_configure() {
+	# configure tries to compile and execute program which fails while cross-compiling in docker
+	export ac_cv_header_stdc=yes
 }