build: libhostname and chkhostname linkage adjustments followup

configure.ac

@@ -764,6 +764,8 @@ ac_cv_func_strcasecmp="no"
 
 CURL_CHECK_LIBS_CONNECT
 
+CURL_NETWORK_LIBS=$LIBS
+
 dnl **********************************************************************
 dnl In case that function clock_gettime with monotonic timer is available,
 dnl check for additional required libraries.
@@ -2651,6 +2653,7 @@ LIBCURL_LIBS=$LIBS
 AC_SUBST(LIBCURL_LIBS)
 AC_SUBST(CURL_LIBS)
 AC_SUBST(TEST_SERVER_LIBS)
+AC_SUBST(CURL_NETWORK_LIBS)
 LIBS=$ALL_LIBS  dnl LIBS is a magic variable that's used for every link
 
 AM_CONDITIONAL(CROSSCOMPILING, test x$cross_compiling = xyes)
@@ -2775,6 +2778,7 @@ squeeze LIBS
 squeeze CURL_LIBS
 squeeze LIBCURL_LIBS
 squeeze TEST_SERVER_LIBS
+squeeze CURL_NETWORK_LIBS
 
 squeeze SUPPORT_FEATURES
 squeeze SUPPORT_PROTOCOLS

tests/libtest/Makefile.inc

@@ -15,7 +15,7 @@ noinst_PROGRAMS = lib500 lib501 lib502 lib503 lib504 lib505 lib506	\
   lib568 lib569 lib570 lib571 lib572 lib573 chkhostname
 
 chkhostname_SOURCES = chkhostname.c $(top_srcdir)/lib/curl_gethostname.c
-chkhostname_LDADD =
+chkhostname_LDADD = @CURL_NETWORK_LIBS@
 chkhostname_DEPENDENCIES =
 chkhostname_CFLAGS = $(AM_CFLAGS)
 

tests/libtest/sethostname.h

@@ -21,5 +21,12 @@
 #  endif
 #endif
 
-LIBHOSTNAME_EXTERN int gethostname(char *name, GETHOSTNAME_TYPE_ARG2 namelen);
+#ifdef USE_WINSOCK
+#  define FUNCALLCONV __stdcall
+#else
+#  define FUNCALLCONV
+#endif
+
+LIBHOSTNAME_EXTERN int FUNCALLCONV
+  gethostname(char *name, GETHOSTNAME_TYPE_ARG2 namelen);