m4/ax_realpath_lib.m4, tools/nut-scanner/nutscan-init.c: add HP-UX *.…

…sl file name patterns into the loop [networkupstools#2431]

Signed-off-by: Jim Klimov <[email protected]>

m4/ax_realpath_lib.m4

@@ -53,12 +53,15 @@ AC_DEFUN([AX_REALPATH_LIB],
         dnl # Primarily we care to know dynamically linked (shared object)
         dnl # files, so inject the extension to the presumed base name
         AS_CASE(["${myLIBNAME}"],
-            [*.so*|*.a|*.o|*.lo|*.la|*.dll|*.dll.a|*.lib|*.dylib], [],
+            [*.so*|*.a|*.o|*.lo|*.la|*.dll|*.dll.a|*.lib|*.dylib|*.sl], [],
             [
                 AS_CASE(["${target_os}"],
                     [*mingw*],  [myLIBNAME="${myLIBNAME}.dll"],
                     [*darwin*], [myLIBNAME="${myLIBNAME}.dylib"],
-                                [myLIBNAME="${myLIBNAME}.so"])
+                    [*hpux*|*hp?ux*], [
+                                 dnl # See detailed comments in nutscan-init.c
+                                 myLIBNAME="${myLIBNAME}.sl"
+                                ],[myLIBNAME="${myLIBNAME}.so"])
             ]
         )
 
@@ -67,7 +70,7 @@ AC_DEFUN([AX_REALPATH_LIB],
                 dnl Alas, the portable solution with sed is to avoid
                 dnl parentheses and pipe chars, got too many different
                 dnl ways to escape them in the wild
-                myLIBNAME_LD="`echo "$myLIBNAME" | sed -e 's/^lib/-l/' -e 's/\.dll$//' -e 's/\.dll\.a$//' -e 's/\.a$//' -e 's/\.o$//' -e 's/\.la$//' -e 's/\.lo$//' -e 's/\.lib$//' -e 's/\.dylib$//' -e 's/\.so\..*$//' -e 's/\.so//'`"
+                myLIBNAME_LD="`echo "$myLIBNAME" | sed -e 's/^lib/-l/' -e 's/\.dll$//' -e 's/\.dll\.a$//' -e 's/\.a$//' -e 's/\.o$//' -e 's/\.la$//' -e 's/\.lo$//' -e 's/\.lib$//' -e 's/\.dylib$//' -e 's/\.so\..*$//' -e 's/\.so//' -e 's/\.sl\..*$//' -e 's/\.sl//'`"
             ], [myLIBNAME_LD="-l$myLIBNAME"]    dnl best-effort...
         )
 

tools/nut-scanner/nutscan-init.c

@@ -50,8 +50,21 @@
 #else
 # ifdef NUT_PLATFORM_APPLE_OSX
 #  define SOEXT ".dylib"
-# else	/* not WIN32, not MACOS */
-#  define SOEXT ".so"
+# else
+#  ifdef NUT_PLATFORM_HPUX
+    /* Note: depending on CPU arch and OS version, library file name
+     * patterns here could have been "*.so" as well. E.g. per
+     * https://community.hpe.com/t5/operating-system-hp-ux/so-and-sl-files/td-p/3780528
+     *   *.sl are used in PA-RISC (11.11)
+     *   *.so shared libraries are used in HP-UX 11.20 and upwards.
+     * Integrity (Itanium-based) HPUX can use *.sl as well, but it
+     * is not recommended, see ld(1) under -lx:
+     *   https://web.archive.org/web/20090925153446/http://docs.hp.com/en/B2355-60103/ld.1.html
+     */
+#   define SOEXT ".sl"
+#  else	/* not WIN32, not MACOS, not HPUX */
+#   define SOEXT ".so"
+#  endif
 # endif
 #endif