Install public executables into bindir instead of pkgdatadir

Instead of installing redirect scripts in to bindir, and real
executables in to pkgdatadir/bin, we now put the real executables into
bindir, and add redirect scripts into pkgdatadir/bin. (That is, we
redirect in the opposite direction as before).

This enables the same relocatable and testable installations as before
without putting architecture specific binaries into pkgdatadir, so
hopefully we now conform to the Linux Filesystem Hierarchy Standard.

This requires a small fixup in the installed `verilator` script to
hardcode the relative path between bindir and pkgdatadir.

Fixes verilator#5140

Makefile.in

@@ -266,11 +266,15 @@ mkbindirs:
 installbin: | mkbindirs
 	cd $(srcdir)/bin; \
 	for p in $(VL_INST_PUBLIC_SCRIPT_FILES) ; do \
-	  $(INSTALL_PROGRAM) $$p $(DESTDIR)$(pkgdatadir)/bin/$$p; \
+	  $(INSTALL_PROGRAM) $$p $(DESTDIR)$(bindir)/$$p; \
 	done
+	perl -p -i -e 'use File::Spec;' \
+	           -e' $$path = File::Spec->abs2rel("$(realpath $(DESTDIR)$(pkgdatadir))", "$(realpath $(DESTDIR)$(bindir))");' \
+	           -e 's/my \$$verilator_pkdatadir_relpath = .*/my \$$verilator_pkdatadir_relpath = "$$path";/g' \
+	           -- "$(DESTDIR)/$(bindir)/verilator"
 	cd bin; \
 	for p in $(VL_INST_PUBLIC_BIN_FILES) ; do \
-	  $(INSTALL_PROGRAM) $$p $(DESTDIR)$(pkgdatadir)/bin/$$p; \
+	  $(INSTALL_PROGRAM) $$p $(DESTDIR)$(bindir)/$$p; \
 	done
 	cd $(srcdir)/bin; \
 	for p in $(VL_INST_PRIVATE_SCRIPT_FILES) ; do \
@@ -280,11 +284,11 @@ installbin: | mkbindirs
 installredirect: installbin | mkbindirs
 	cp ${srcdir}/bin/redirect ${srcdir}/bin/redirect.tmp
 	perl -p -i -e 'use File::Spec;' \
-	           -e' $$path = File::Spec->abs2rel("$(realpath $(DESTDIR)$(pkgdatadir)/bin)", "$(realpath $(DESTDIR)$(bindir))");' \
+	           -e' $$path = File::Spec->abs2rel("$(realpath $(DESTDIR)$(bindir))", "$(realpath $(DESTDIR)$(pkgdatadir)/bin)");' \
 	           -e 's/RELPATH.*/"$$path";/g' -- "${srcdir}/bin/redirect.tmp"
 	cd $(srcdir)/bin; \
 	for p in $(VL_INST_PUBLIC_SCRIPT_FILES) $(VL_INST_PUBLIC_BIN_FILES) ; do \
-	  $(INSTALL_PROGRAM) redirect.tmp $(DESTDIR)$(bindir)/$$p; \
+	  $(INSTALL_PROGRAM) redirect.tmp $(DESTDIR)$(pkgdatadir)/bin/$$p; \
 	done
 	rm ${srcdir}/bin/redirect.tmp
 

bin/verilator

@@ -69,7 +69,9 @@ if (! GetOptions(
     pod2usage(-exitstatus => 2, -verbose => 0);
 }
 
-my $verilator_root = realpath("$RealBin/..");
+# WARNING: $verilator_pkdatadir_relpath is substituted during Verilator 'make install'
+my $verilator_pkdatadir_relpath = "..";
+my $verilator_root = realpath("$RealBin/$verilator_pkdatadir_relpath");
 if (defined $ENV{VERILATOR_ROOT}) {
     if ((!-d $ENV{VERILATOR_ROOT}) || $verilator_root ne realpath($ENV{VERILATOR_ROOT})) {
         warn "%Error: verilator: VERILATOR_ROOT is set to inconsistent path. Suggest leaving it unset.\n";

test_regress/t/t_flag_help.py

@@ -14,26 +14,22 @@
 # See also t_flag_version.py
 
 
-def check(interpreter, prog):
+def check(prog):
     logfile = test.obj_dir + "/t_help__" + os.path.basename(prog) + ".log"
 
-    test.run(fails=False,
-             cmd=[interpreter, prog, "--help"],
-             logfile=logfile,
-             tee=False,
-             verilator_run=True)
+    test.run(fails=False, cmd=[prog, "--help"], logfile=logfile, tee=False, verilator_run=True)
 
     test.file_grep(logfile, r'(DISTRIBUTION|usage:)')
 
 
-check("perl", os.environ["VERILATOR_ROOT"] + "/bin/verilator")
-check("perl", os.environ["VERILATOR_ROOT"] + "/bin/verilator_coverage")
+check(os.environ["VERILATOR_ROOT"] + "/bin/verilator")
+check(os.environ["VERILATOR_ROOT"] + "/bin/verilator_coverage")
 
-check("python3", os.environ["VERILATOR_ROOT"] + "/bin/verilator_ccache_report")
-check("python3", os.environ["VERILATOR_ROOT"] + "/bin/verilator_gantt")
-check("python3", os.environ["VERILATOR_ROOT"] + "/bin/verilator_profcfunc")
+check(os.environ["VERILATOR_ROOT"] + "/bin/verilator_ccache_report")
+check(os.environ["VERILATOR_ROOT"] + "/bin/verilator_gantt")
+check(os.environ["VERILATOR_ROOT"] + "/bin/verilator_profcfunc")
 
 if os.path.exists(os.environ["VERILATOR_ROOT"] + "/bin/verilator_difftree"):
-    check("python3", os.environ["VERILATOR_ROOT"] + "/bin/verilator_difftree")
+    check(os.environ["VERILATOR_ROOT"] + "/bin/verilator_difftree")
 
 test.passes()