gdbm: fix build with gcc 10, remove compat symlink

gdbm/.footprint

@@ -11,7 +11,6 @@ drwxr-xr-x	root/root	usr/lib/
 -rw-r--r--	root/root	usr/lib/libgdbm.a
 -rwxr-xr-x	root/root	usr/lib/libgdbm.la
 lrwxrwxrwx	root/root	usr/lib/libgdbm.so -> libgdbm.so.6.0.0
-lrwxrwxrwx	root/root	usr/lib/libgdbm.so.5 -> libgdbm.so.6.0.0
 lrwxrwxrwx	root/root	usr/lib/libgdbm.so.6 -> libgdbm.so.6.0.0
 -rwxr-xr-x	root/root	usr/lib/libgdbm.so.6.0.0
 -rw-r--r--	root/root	usr/lib/libgdbm_compat.a

gdbm/.signature

@@ -1,5 +1,5 @@
 untrusted comment: verify with /etc/ports/core.pub
-RWRJc1FUaeVeqjG15YykxaY6amLt+xip5Hl9SyTXFL7WgE5PRp2A5/9aHo8ers/+LEeNbZDVpSSU8lz0CJLkpsnYQn1TGgc8QAA=
-SHA256 (Pkgfile) = ea6ba53e408083e94e50129d5b69a1508546b80f424e2e915f6a1fbde706fd79
-SHA256 (.footprint) = bd2e96865c631ad3b5bdf289a1153fc21be00f315b5cee466dc5e292eeee5e82
+RWRJc1FUaeVeqqJFdi2kowo6Zqz+znEqd6oVaEF/xjsJUKg704YXcReGDtwisTlbQg9MI3/U4dPyz5om3fXFwbEQobbnKmlWlwA=
+SHA256 (Pkgfile) = 0695e78e1700d6b8e5f3b3457b4a89b33a291021fd51356119d07cf1f3e5fc84
+SHA256 (.footprint) = f07686f63bde21a8d8eef3ffcf57514cd270dd1c4765e3981c5c6ec755ff4acf
 SHA256 (gdbm-1.18.1.tar.gz) = 86e613527e5dba544e73208f42b78b7c022d4fa5a6d5498bf18c8d6f745b91dc

gdbm/Pkgfile

@@ -5,19 +5,18 @@
 
 name=gdbm
 version=1.18.1
-release=1
+release=2
 source=(http://ftpmirror.gnu.org/gnu/$name/$name-$version.tar.gz)
 
 build() {
     cd $name-$version
 
+    export CFLAGS="$CFLAGS -fcommon"
+
     ./configure --prefix=/usr --enable-libgdbm-compat
 
     make
     make DESTDIR=$PKG install
 
-    # compat symlink, remove later
-    ln -s libgdbm.so.6.0.0 $PKG/usr/lib/libgdbm.so.5
-
     rm -r $PKG/usr/share/{info,locale}
 }