main/sqlite: tidy up and comment things

main/sqlite/APKBUILD

@@ -2,6 +2,17 @@
 # Contributor: Łukasz Jendrysik <scadu@yandex.com>
 pkgname=sqlite
 pkgver=3.23.1
+pkgrel=0
+pkgdesc="C library that implements an SQL database engine"
+url="http://www.sqlite.org"
+arch="all"
+options=""
+license="Public-Domain"
+depends=""
+makedepends="readline-dev"
+subpackages="$pkgname-doc $pkgname-dev $pkgname-libs"
+
+# compute _ver
 _a=${pkgver%%.*}
 _b=${pkgver#${_a}.}
 _b=${_b%%.*}
@@ -11,24 +22,17 @@ case $pkgver in
 	*.*.*.*)_d=${pkgver##*.};;
 	*.*.*)	_d=0;;
 esac
-
 [ $_b -lt 10 ] && _b=0$_b
 [ $_c -lt 10 ] && _c=0$_c
 [ $_d -lt 10 ] && _d=0$_d
 _ver=${_a}${_b}${_c}${_d}
 
-pkgrel=0
-pkgdesc="C library that implements an SQL database engine"
-url="http://www.sqlite.org"
-arch="all"
-options="!check"
-license="Public-Domain"
-depends=""
-makedepends="readline-dev"
+# these variables depend on _ver being set
+builddir="$srcdir/$pkgname-autoconf-$_ver"
 source="http://www.sqlite.org/2018/$pkgname-autoconf-$_ver.tar.gz
 	license.txt"
-subpackages="$pkgname-doc $pkgname-dev $pkgname-libs"
 
+# additional CFLAGS to set
 _amalgamation="-DSQLITE_ENABLE_FTS4 \
 	-DSQLITE_ENABLE_FTS3_PARENTHESIS \
 	-DSQLITE_ENABLE_FTS5 \
@@ -41,13 +45,13 @@ _amalgamation="-DSQLITE_ENABLE_FTS4 \
 	-DSQLITE_MAX_VARIABLE_NUMBER=250000 \
 	-DSQLITE_ENABLE_JSON1"
 
-builddir="$srcdir/$pkgname-autoconf-$_ver"
 build() {
 	cd "$builddir"
+
 	export CFLAGS="$CFLAGS $_amalgamation"
 	./configure \
-		--build=$CBUILD \
-		--host=$CHOST \
+		--build="$CBUILD" \
+		--host="$CHOST" \
 		--prefix=/usr \
 		--enable-threadsafe \
 		--disable-static \
@@ -63,7 +67,9 @@ build() {
 
 package() {
 	cd "$builddir"
+
 	make -j1 DESTDIR="$pkgdir" install
+
 	install -Dm0644 sqlite3.1 \
 		"$pkgdir"/usr/share/man/man1/sqlite3.1
 	install -Dm644 "$srcdir"/license.txt \
@@ -73,6 +79,7 @@ package() {
 libs() {
 	replaces="sqlite"
 	pkgdesc="Sqlite3 library"
+
 	mkdir -p "$subpkgdir"/usr
 	mv "$pkgdir"/usr/lib "$subpkgdir"/usr/
 }