Bug#956178: libjna-jni libjnidispatch.system.so has build directory in soname

[Bart Massey]

Package: libjna-jni
Version: 4.5.2-1+b1
Severity: normal
Tags: patch

Dear Maintainer,

Placed the following in /etc/ld.so.conf.d/java-jni.conf

        /usr/lib/x86_64-linux-gnu/jni
        /usr/lib/jni

and ran ldconfig, which reported

        ldconfig: Can't link /usr/lib/x86_64-linux-gnu/jni//build/libjna-java-ayrlgf/libjna-java-4.5.2/build/native-linux-x86-64/libjnidispatch.system.so to libjnidispatch.system.so

This didn't seem right, so after some tracking down
discovered that the Makefile was borked.

Attached is a tested patch that resolves the problem by
removing the build path from the library soname.

-- System Information:
Debian Release: bullseye/sid
  APT prefers unstable
  APT policy: (900, 'unstable'), (400, 'oldoldstable'), (400, 'experimental'), (400, 'testing'), (400, 'stable'), (400, 'oldstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.4.0-4-amd64 (SMP w/8 CPU cores)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_FIRMWARE_WORKAROUND, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages libjna-jni depends on:
ii  libc6    2.30-4
ii  libffi7  3.3-4

libjna-jni recommends no packages.

libjna-jni suggests no packages.

-- no debconf information

--- native/Makefile.dist	2020-04-07 19:57:15.443971156 -0700
+++ native/Makefile	2020-04-07 19:57:44.708059780 -0700
@@ -268,10 +268,10 @@
 PCFLAGS+=-fPIC
 CDEFINES+=-DHAVE_PROTECTION
 ifeq ($(DYNAMIC_LIBFFI),true)
-LDFLAGS+=-Wl,-soname,$@
+LDFLAGS+=-Wl,-soname,$(F@)
 else
 # Ensure we bind to local libffi symbols
-LDFLAGS+=-Wl,-soname,$@,-Bsymbolic
+LDFLAGS+=-Wl,-soname,$(F@),-Bsymbolic
 endif
 endif