feat: enable building as py3-none wheel

.github/workflows/test.yml

@@ -22,13 +22,12 @@ jobs:
 
     - name: Install dependencies
       run: |
-        brew install bison
-        pip3 install --break-system-packages docopt
+        brew bundle install
 
     - name: Build, check and install
       run: |
-        export PATH="/usr/local/opt/bison/bin:$PATH"
-        autoconf
+        eval "$(brew bundle env)"
+        autoreconf -vfi
         ./configure --enable-libveriuser
         make -j$(nproc) check
         sudo make install

.gitignore

@@ -119,3 +119,8 @@ dep
 # Silimate added
 /build/
 *.dSYM
+/.venv
+/venv
+/pfx
+__pycache__
+/wheelhouse

Brewfile

@@ -0,0 +1,6 @@
+brew "flex"
+brew "bison"
+brew "gperf"
+brew "libtool"
+brew "autoconf"
+brew "bzip2"

configure.ac

@@ -13,6 +13,11 @@ AC_CONFIG_HEADERS([tgt-pcb/pcb_config.h])
 
 AC_CANONICAL_HOST
 dnl Checks for programs.
+
+dnl SILIMATE: c23 compile option gets propagated to iverilog-vpi which breaks
+dnl on systems as recent as Ubuntu 24.04
+ac_cv_prog_cc_c23=no
+
 AC_PROG_CC
 AX_PROG_CC_FOR_BUILD
 AC_PREREQ([2.62])
@@ -104,12 +109,12 @@ AS_IF( [test "x$with_m32" = xyes],
     [])
 
 CFLAGS="$CTARGETFLAGS $CFLAGS"
-# Cygwin does not declare strdup() for C++ 11 by default so use gnu++11
+# Cygwin does not declare strdup() for C++ 17 by default so use gnu++11
 # to expose the declaration.
-decl_cxx_std="-std=c++11"
+decl_cxx_std="-std=c++17"
 case "${host}" in
   *-*-cygwin*)
-    decl_cxx_std="-std=gnu++11"
+    decl_cxx_std="-std=gnu++17"
     ;;
 esac
 CXXFLAGS="$CTARGETFLAGS $CXXFLAGS $decl_cxx_std"

driver/Makefile.in

@@ -35,6 +35,7 @@ pdfdir = @docdir@
 dllib=@DLLIB@
 
 CC = @CC@
+CXX = @CXX@
 INSTALL = @INSTALL@
 INSTALL_PROGRAM = @INSTALL_PROGRAM@
 INSTALL_DATA = @INSTALL_DATA@
@@ -53,7 +54,7 @@ CPPFLAGS = $(INCLUDE_PATH) @CPPFLAGS@ @DEFS@
 CFLAGS = @WARNING_FLAGS@ @WARNING_FLAGS_CC@ @CFLAGS@
 LDFLAGS = @LDFLAGS@
 
-O = main.o substit.o cflexor.o cfparse.o
+O = main.o substit.o cflexor.o cfparse.o driver_portable.o
 
 all: dep iverilog@EXEEXT@ iverilog.man
 
@@ -83,7 +84,7 @@ dep:
 	mkdir dep
 
 iverilog@EXEEXT@: $O
-	$(CC) $(LDFLAGS) $O -o iverilog@EXEEXT@ @EXTRALIBS@
+	$(CXX) $(LDFLAGS) $O -o iverilog@EXEEXT@ @EXTRALIBS@
 
 cflexor.c: $(srcdir)/cflexor.lex
 	$(LEX) -s -t $< > $@
@@ -92,6 +93,10 @@ cflexor.c: $(srcdir)/cflexor.lex
 cfparse%c cfparse%h: $(srcdir)/cfparse%y
 	$(YACC) --verbose -t -p cf -d -o cfparse.c $<
 
+%.o: %.cc
+	$(CXX) -std=c++17 $(CPPFLAGS) $(CFLAGS) @DEPENDENCY_FLAG@ -DIVL_LIB='"@libdir@"' -DIVL_INCLUDE_INSTALL_DIR="\"$(realpath $(DESTDIR)/$(includedir))\"" -c $< -o $*.o
+	mv $*.d dep
+
 %.o: %.c
 	$(CC) $(CPPFLAGS) $(CFLAGS) @DEPENDENCY_FLAG@ -c $< -o $*.o
 	mv $*.d dep

driver/driver_portable.cc

@@ -0,0 +1,51 @@
+/*
+ *    Copyright (C) 2026 Silimate Inc.
+ *
+ *    This source code is free software; you can redistribute it
+ *    and/or modify it in source code form under the terms of the GNU
+ *    General Public License as published by the Free Software
+ *    Foundation; either version 2 of the License, or (at your option)
+ *    any later version.
+ *
+ *    This program is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU General Public License for more details.
+ *
+ *    You should have received a copy of the GNU General Public License
+ *    along with this program; if not, write to the Free Software
+ *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+// SILIMATE: This file can find the appropriate prefix for a relocated driver,
+//           which is needed for wheels.
+//
+//           C++17 with std::filesystem required.
+#include <filesystem>
+#include <unistd.h>
+#include <cstdio>
+#include <cstring>
+
+#ifdef __APPLE__
+#include <mach-o/dyld.h>
+#endif
+
+namespace fs = std::filesystem;
+
+extern "C" void print_runtime_paths_portable(const char *ivl_root) {
+    auto prefix = fs::canonical(fs::path(ivl_root)).parent_path().parent_path();
+    auto include_dir = prefix / "include";
+    if (fs::exists(include_dir)) {
+        printf("includedir: %s\n", include_dir.c_str());
+    } else {
+        printf("includedir: %s\n", IVL_INCLUDE_INSTALL_DIR);
+    }
+
+    // SILIMATE: unlike upstream function, we also print the libdir
+    auto lib_dir = prefix / "lib";
+    if (fs::exists(lib_dir)) {
+        printf("libdir: %s\n", lib_dir.c_str());
+    } else {
+        printf("libdir: %s\n", IVL_LIB);
+    }
+
+}

driver/main.c

@@ -69,6 +69,9 @@ const char HELP[] =
 # include  <libiberty.h>
 #endif
 #endif
+#ifdef __APPLE__
+#include <mach-o/dyld.h> // _NSGetExecutablePath
+#endif
 #include  <fcntl.h>
 
 #ifdef HAVE_GETOPT_H
@@ -1101,6 +1104,9 @@ static void print_runtime_paths(void) {
 	printf("includedir: %s\n", IVL_INCLUDE_INSTALL_DIR);
 }
 
+// SILIMATE: portable binary versions
+extern void print_runtime_paths_portable(const char *);
+
 int main(int argc, char **argv)
 {
       int e_flag = 0;
@@ -1258,7 +1264,8 @@ int main(int argc, char **argv)
 		  break;
 
 		case 'R':
-		  print_runtime_paths();
+		  // SILIMATE: use portable version
+		  print_runtime_paths_portable(ivl_root);
 		  return 0;
 
 		case 'S':