Make install paths more configurable and add GNAT project file

This will ease Debian packaging.

configure.ac

@@ -7,8 +7,34 @@ AM_CONFIG_HEADER(src/config.h)
 #
 # Package description
 #
-LIBVERSIONINFO=1:0:0
+AC_ARG_WITH([libversioninfo],
+            [AS_HELP_STRING([--with-libversion=VSN],
+                            [Shared Object version for relocatable library [1:0:0]])],
+            [LIBVERSIONINFO=$withval],
+            [LIBVERSIONINFO=1:0:0])
 AC_SUBST(LIBVERSIONINFO)
+#
+AC_ARG_WITH([adasrcinstalldir],
+            [AS_HELP_STRING([--with-adasrcinstalldir=DIR],
+                            [Ada sources go under DIR/adasockets [LIBDIR]])],
+            [ada_src_install_dir=$withval],
+            [ada_src_install_dir='${libdir}'])
+AC_SUBST(ada_src_install_dir)
+#
+AC_ARG_WITH([aliinstalldir],
+            [AS_HELP_STRING([--with-aliinstalldir=DIR],
+                            [Ada Lib Info go under DIR/adasockets [LIBDIR]])],
+            [ali_install_dir=$withval],
+            [ali_install_dir='${libdir}'])
+AC_SUBST(ali_install_dir)
+#
+AC_ARG_WITH([gprinstalldir],
+            [AS_HELP_STRING([--with-gprinstalldir=DIR],
+                            [GPRBuild project goes under DIR [DATADIR/gpr]])],
+            [gpr_install_dir=$withval],
+            [gpr_install_dir='${datadir}/gpr'])
+AC_SUBST(gpr_install_dir)
+#
 AM_PROG_LIBTOOL
 #
 AC_CHECK_PROGS(AWK, [gnuawk gawk awk])

src/Makefile.am

@@ -1,7 +1,5 @@
 CCLD = $(CC)
 
-privatelibdir = $(libdir)/adasockets
-
 bin_SCRIPTS = adasockets-config
 
 lib_LTLIBRARIES = libadasockets.la
@@ -94,20 +92,32 @@ SUFFIXES = .ads .lo .ali
 
 .lo.ali:
 
+# ./configure would not substitute ${prefix} in the project.
 install-data-local: all
-	rm -rf $(DESTDIR)$(privatelibdir)
-	$(mkinstalldirs) $(DESTDIR)$(privatelibdir)
-	$(INSTALL) -m 444 $(ALIS) $(DESTDIR)$(privatelibdir)
+	rm -fr $(DESTDIR)$(ada_src_install_dir)/adasockets \
+	       $(DESTDIR)$(ali_install_dir)/adasockets
+	$(mkinstalldirs) \
+	  $(DESTDIR)$(ada_src_install_dir)/adasockets \
+	  $(DESTDIR)$(ali_install_dir)/adasockets \
+	  $(DESTDIR)$(gpr_install_dir)
+	$(INSTALL) -m 444 $(ALIS) $(DESTDIR)$(ali_install_dir)/adasockets
 	for i in $(dist_libadasockets_la_SOURCES) $(nodist_libadasockets_la_SOURCES); do \
 	  if test -f $$i; then \
-	    $(INSTALL) -m 644 $$i $(DESTDIR)$(privatelibdir); \
+	    $(INSTALL) -m 644 $$i $(DESTDIR)$(ada_src_install_dir)/adasockets; \
 	  else \
-	    $(INSTALL) -m 644  $(srcdir)/$$i $(DESTDIR)$(privatelibdir); \
+	    $(INSTALL) -m 644  $(srcdir)/$$i $(DESTDIR)$(ada_src_install_dir)/adasockets; \
 	  fi \
 	done
+	sed -e 's|@libdir[@]|$(libdir)|' \
+	    -e 's|@ada_src_install_dir[@]|$(ada_src_install_dir)|' \
+	    -e 's|@ali_install_dir[@]|$(ali_install_dir)|' \
+	     $(srcdir)/adasockets.gpr.in > $(DESTDIR)$(gpr_install_dir)/adasockets.gpr
+	chmod 644 $(DESTDIR)$(gpr_install_dir)/adasockets.gpr
 
 uninstall-local:
-	rm -rf $(DESTDIR)$(privatelibdir)
+	rm -fr $(DESTDIR)$(ada_src_install_dir)/adasockets \
+	       $(DESTDIR)$(ali_install_dir)/adasockets
+	rm -f  $(DESTDIR)$(gpr_install_dir)/adasockets.gpr
 
 ### DO NOT REMOVE THIS LINE, IT IS USED BY MAKEDEPEND ###
 sockets-multicast.lo : sockets.ads sockets.adb sockets-constants.ads \

src/adasockets.gpr.in

@@ -0,0 +1,8 @@
+library project Adasockets is
+   for Library_Name use "adasockets";
+   for Library_Kind use "relocatable";
+   for Library_Dir use "@libdir@";
+   for Source_Dirs use ("@ada_src_install_dir@/adasockets");
+   for Library_ALI_Dir use "@ali_install_dir@/adasockets";
+   for Externally_Built use "true";
+end Adasockets;

src/adasockets.pc.in

@@ -8,4 +8,4 @@ Description: BSD sockets in Ada.
 Requires:
 Version: @VERSION@
 Libs: -L${libdir} -ladasockets
-Cflags: -I${libdir}/adasockets -L${libdir}/adasockets
+Cflags: -aI@ada_src_install_dir@/adasockets -aO@ali_install_dir@/adasockets