Fix install on OpenBSD

.github/workflows/openbsd.yaml

@@ -28,14 +28,18 @@ jobs:
           R.version[["platform"]]
           .libPaths()
           .Library
-          Sys.getenv("R_LIBS_SITE")
-          Sys.getenv("R_LIBS_USER")
           find.package("pak")
           Sys.getenv()
         shell: Rscript {0}
 
       - uses: r-hub/actions/debug-shell@main
 
+      - name: Install system packages
+        run: |
+          pkg_add -I libbind
+          cd /usr/local/lib && ln -s libbind/libbind.so* .
+        shell: openbsd {0}
+
       - uses: r-lib/actions/setup-r-dependencies@v2
         with:
           pak-version: none

configure

@@ -41,7 +41,7 @@ unset FREEBSD
 if [ "$UNAME" = "FreeBSD" ]; then FREEBSD=true; POSIX=true; fi
 
 unset OPENBSD
-## if [ "$UNAME" = "OpenBSD" ]; then OPENBSD=true; POSIX=true; fi
+if [ "$UNAME" = "OpenBSD" ]; then OPENBSD=true; POSIX=true; fi
 
 unset NETBSD
 ## if [ "$UNAME" = "NetBSD" ]; then NETBSD=true; POSIX=true; fi
@@ -61,12 +61,19 @@ unset AIX
 # Set source files, macros, libs, compile flags
 # ------------------------------------------------------------------------
 
+CPPFLAGS=
+
 if [ -n "$WINDOWS" ]; then
     LIBRARIES=
 
 elif [ -n "$FREEBSD" ]; then
     LIBRARIES=
 
+elif [ -n "$OPENBSD" ]; then
+    LIBRARIES=bind
+    LIBDIRS=-L/usr/local/lib/libbind
+    CPPFLAGS=-I/usr/local/include/bind
+
 else
     LIBRARIES=resolv
 fi
@@ -79,10 +86,11 @@ fi
 # LIBRARIES -> PKG_LIBS
 
 LIBS=`for l in $LIBRARIES; do echo "-l${l}"; done | tr "\n", " "`
-LIBS="${LIBS} $FRAMEWORKS"
+LIBS="$LIBDIRS ${LIBS} $FRAMEWORKS"
 
 cat src/Makevars.in | \
     sed "s|@OBJECTS@|${OBJECTS}|" | \
-    sed "s/@LIBS@/${LIBS}/" | \
-    sed "s/@TARGETS@/${TARGETS}/" | \
+    sed "s|@LIBS@|${LIBS}|" | \
+    sed "s|@TARGETS@|${TARGETS}|" | \
+    sed "s|@CPPFLAGS@|${CPPFLAGS}|" | \
     sed "s|@EXTRA@|${EXTRA}|" > src/Makevars

src/Makevars.in

@@ -1 +1,2 @@
 PKG_LIBS = @LIBS@
+PKG_CPPFLAGS = @CPPFLAGS@

src/dns.c

@@ -2,6 +2,10 @@
 #ifdef _WIN32
 #include <Winsock2.h>
 #include <ws2tcpip.h>
+#else
+#include <sys/types.h>
+#include <netinet/in.h>
+#include <arpa/nameser.h>
 #endif
 
 #undef ERROR