nim: fix build error and use -Oz for aarch64

packages/nim/build.sh

@@ -2,6 +2,7 @@ TERMUX_PKG_HOMEPAGE=https://nim-lang.org/
 TERMUX_PKG_DESCRIPTION="Nim programming language compiler"
 TERMUX_PKG_LICENSE="MIT"
 TERMUX_PKG_VERSION=0.20.0
+TERMUX_PKG_REVISION=1
 TERMUX_PKG_SRCURL=https://nim-lang.org/download/nim-$TERMUX_PKG_VERSION.tar.xz
 TERMUX_PKG_SHA256=51f479b831e87b9539f7264082bb6a64641802b54d2691b3c6e68ac7e2699a90
 TERMUX_PKG_DEPENDS="clang, git, libandroid-glob"
@@ -19,8 +20,6 @@ termux_step_make() {
 	elif [ $TERMUX_ARCH = "i686" ]; then
 		export	NIM_ARCH=i386
 	elif [ $TERMUX_ARCH = "aarch64" ]; then
-		# -Oz breaks aarch64 build
-		CFLAGS+=" -Os"
 		export NIM_ARCH=arm64
 	else
 		export NIM_ARCH=arm
@@ -41,9 +40,9 @@ termux_step_make() {
 	make LD=$CC uos=linux mycpu=$NIM_ARCH myos=android  -j $TERMUX_MAKE_PROCESSES useShPath=$TERMUX_PREFIX/bin/sh
 	cp config/nim.cfg ../host-build/config
 
-	nim --opt:size --define:termux -d:release --os:android --cpu:$NIM_ARCH  -t:-I/data/data/com.termux/files/usr/include -l:"-L/data/data/com.termux/files/usr/lib -landroid-glob" c koch.nim
+	nim --cc:clang --clang.exe=$CC --clang.linkerexe=$CC --opt:size --define:termux -d:release --os:android --cpu:$NIM_ARCH  -t:-I/data/data/com.termux/files/usr/include -l:"-L/data/data/com.termux/files/usr/lib -landroid-glob" c koch.nim
 	cd dist/nimble/src
-	nim --define:termux -d:release --os:android --cpu:$NIM_ARCH  -t:-I/data/data/com.termux/files/usr/include -l:"-L/data/data/com.termux/files/usr/lib -landroid-glob" c nimble.nim
+	nim --cc:clang --clang.exe=$CC --clang.linkerexe=$CC --define:termux -d:release --os:android --cpu:$NIM_ARCH  -t:-I/data/data/com.termux/files/usr/include -l:"-L/data/data/com.termux/files/usr/lib -landroid-glob" c nimble.nim
 }
 
 termux_step_make_install() {