Ports: Add nasm port

ports/nasm/nasm.patch

@@ -0,0 +1,13 @@
+diff --color -rN -u nasm-vanilla/Makefile.in nasm-2.15.05/Makefile.in
+--- a/nasm-2.15.05/Makefile.in	2020-08-28 18:04:43.000000000 +0200
++++ b/nasm-2.15.05/Makefile.in	2022-10-30 18:00:40.386258721 +0100
+@@ -389,9 +389,6 @@
+ 	$(MKDIR_P) $(DESTDIR)$(bindir)
+ 	$(INSTALL_PROGRAM) nasm$(X) $(DESTDIR)$(bindir)/nasm$(X)
+ 	$(INSTALL_PROGRAM) ndisasm$(X) $(DESTDIR)$(bindir)/ndisasm$(X)
+-	$(MKDIR_P) $(DESTDIR)$(mandir)/man1
+-	$(INSTALL_DATA) $(srcdir)/nasm.1 $(DESTDIR)$(mandir)/man1/nasm.1
+-	$(INSTALL_DATA) $(srcdir)/ndisasm.1 $(DESTDIR)$(mandir)/man1/ndisasm.1
+ 
+ clean:
+ 	for d in . $(SUBDIRS) $(XSUBDIRS); do \

ports/nasm/package.sh

@@ -0,0 +1,42 @@
+pkgname="nasm"
+pkgver="2.15.05"
+pkgurl="https://www.nasm.us/pub/nasm/releasebuilds/$pkgver/nasm-$pkgver.tar.gz"
+
+pkgmode="web"
+
+setupdir="$workdir"
+builddir="$workdir/build"
+installdir="$workdir/build"
+srcdir="$workdir/nasm-$pkgver"
+
+port_unpack()
+{
+    tar xvf nasm-$pkgver.tar.gz
+}
+
+port_patch()
+{
+    patch -u -i $portdir/nasm.patch -p 1 -d $workdir
+}
+
+port_configure()
+{
+    $srcdir/configure --host=x86_64-luna --prefix=""
+}
+
+port_build()
+{
+    make -j$(nproc)
+}
+
+port_install()
+{
+    make install
+    $STRIP $DESTDIR/bin/{nasm,ndisasm}
+}
+
+port_uninstall() # nasm's Makefile does not provide an uninstall target.
+{
+    rm -f $DESTDIR/bin/nasm
+    rm -f $DESTDIR/bin/ndisasm
+}