From 76ce880bef54d80cfd5a55817b203616f50de823 Mon Sep 17 00:00:00 2001
From: Tristan Gingold <tgingold@free.fr>
Date: Wed, 20 Jul 2022 19:36:25 +0200
Subject: configure: add --with-sundials (preliminary work)

---
 Makefile.in                 |  5 ++++-
 configure                   |  8 ++++++++
 src/grt/Makefile.inc        | 12 ++++++++++++
 src/grt/grt-no_sundials_c.c | 32 ++++++++++++++++++++++++++++++++
 4 files changed, 56 insertions(+), 1 deletion(-)
 create mode 100644 src/grt/grt-no_sundials_c.c

diff --git a/Makefile.in b/Makefile.in
index 8fa441738..bf3068736 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -44,6 +44,9 @@ enable_checks=@enable_checks@
 enable_gplcompat=@enable_gplcompat@
 enable_libghdl=@enable_libghdl@
 default_pic=@default_pic@
+with_sundials=@with_sundials@
+sundials_incflags=@sundials_incflags@
+sundials_ldflags=@sundials_ldflags@
 
 INSTALL_PROGRAM=install -m 755
 INSTALL_DATA=install -m 644
@@ -412,7 +415,7 @@ uninstall.llvm: uninstall.llvm.program uninstall.grt
 GHDL_SIMUL_INCFLAGS=$(GHDL_COMMON_INCFLAGS) -aI$(srcdir)/src/ghdldrv -aI$(srcdir)/src/simul -aI$(srcdir)/src/synth
 
 ghdl_simul$(EXEEXT): $(GRT_ADD_OBJS) $(GRT_SRC_DEPS) version.ads force
-	$(GNATMAKE) $(GHDL_SIMUL_INCFLAGS) $(GNATFLAGS) -gnat12 ghdl_simul $(GNAT_BARGS) -largs $(LDFLAGS) $(GRT_ADD_OBJS) $(subst @,$(GRTSRCDIR),$(GRT_EXTRA_LIB))
+	$(GNATMAKE) $(GHDL_SIMUL_INCFLAGS) $(GNATFLAGS) -gnat12 ghdl_simul $(GNAT_BARGS) -largs $(LDFLAGS) $(GRT_ADD_OBJS) $(subst @,$(GRTSRCDIR),$(GRT_EXTRA_LIB)) $(sundials_ldflags)
 
 libs.vhdl.simul: ghdl_simul$(EXEEXT)
 	$(MAKE) -f $(srcdir)/libraries/Makefile.inc $(LIBVHDL_FLAGS_TO_PASS) GHDL=$(PWD)/ghdl_simul$(EXEEXT) GHDL_FLAGS="" VHDLLIBS_COPY_OBJS=no vhdl.libs.all
diff --git a/configure b/configure
index 0daae1a05..6014f51c2 100755
--- a/configure
+++ b/configure
@@ -48,6 +48,9 @@ enable_gplcompat=unknown
 enable_libghdl=true
 enable_synth=true
 with_readline=None
+with_sundials=false
+sundials_incflags=
+sundials_ldflags=
 default_pic=false
 EXEEXT=
 SOEXT=.so
@@ -61,6 +64,7 @@ srcdir abs_srcdir prefix backend libdirsuffix libghdldirsuffix
 incdirsuffix gcc_src_dir llvm_config llvm_be backtrace_lib
 build_mode EXEEXT SOEXT PIC_FLAGS default_pic enable_werror enable_checks
 enable_gplcompat enable_libghdl libghdl_version ghdl_version
+with_sundials sundials_incflags sundials_ldflags
 COMPILER_GCC COMPILER_DEBUG COMPILER_MCODE COMPILER_LLVM POST_PROCESSOR
 INSTALL_PREFIX LIBDIR_SUFFIX LIBGHDLDIR_SUFFIX INCDIR_SUFFIX
 "
@@ -113,6 +117,10 @@ for opt do
     --with-llvm-config=*)   llvm_config="$optarg";     backend=llvm;;
     --with-backtrace-lib=*) backtrace_lib="$optarg";;
     --with-readline)        with_readline="Gnu";;
+    --with-sundials=*)      with_sundials=true;
+			    sundials_incflags="-I$optarg/include";
+			    sundials_ldflags="-L$optarg/lib -lsundials_ida";;
+    --with-sundials)        with_sundials=true;;
     --enable-werror)        enable_werror=true;;
     --disable-werror)       enable_werror=false;;
     --enable-checks)        enable_checks=true;;
diff --git a/src/grt/Makefile.inc b/src/grt/Makefile.inc
index 71c202e11..c8e0d9f06 100644
--- a/src/grt/Makefile.inc
+++ b/src/grt/Makefile.inc
@@ -110,6 +110,12 @@ ifeq ($(GRT_USE_PTHREADS),y)
  GRT_EXTRA_LIB+=-lpthread
 endif
 
+ifeq ($(with_sundials),true)
+  GRT_ADD_OBJS+=grt-sundials_c.o
+else
+  GRT_ADD_OBJS+=grt-no_sundials_c.o
+endif
+
 GRT_LIBBACKTRACE=
 ifneq ($(LIBBACKTRACE),)
   GRT_LIBBACKTRACE=libbacktrace.a
@@ -217,6 +223,12 @@ pic/grt-cdynload.o: $(GRTSRCDIR)/grt-cdynload.c
 grt-cthreads.o: $(GRTSRCDIR)/grt-cthreads.c
 	$(GRT_C_COMPILE)
 
+grt-sundials_c.o: $(GRTSRCDIR)/grt-sundials_c.c
+	$(GRT_C_COMPILE) $(sundials_incflags)
+
+grt-no_sundials_c.o: $(GRTSRCDIR)/grt-no_sundials_c.c
+	$(GRT_C_COMPILE)
+
 fstapi.o: $(GRTSRCDIR)/fst/fstapi.c
 	$(GRT_C_COMPILE) -I$(GRTSRCDIR)/fst
 
diff --git a/src/grt/grt-no_sundials_c.c b/src/grt/grt-no_sundials_c.c
new file mode 100644
index 000000000..87e7bb7a5
--- /dev/null
+++ b/src/grt/grt-no_sundials_c.c
@@ -0,0 +1,32 @@
+#include <stddef.h>
+typedef double realtype;
+
+realtype *
+grt_sundials_get_yy_vec(void)
+{
+  return NULL;
+}
+
+realtype *
+grt_sundials_get_yp_vec(void)
+{
+  return NULL;
+}
+
+int
+grt_sundials_init(int sz)
+{
+  return -1;
+}
+
+int
+grt_sundials_start (void)
+{
+  return -1;
+}
+
+int
+grt_sundials_solve(realtype t0, realtype *tn, int *res)
+{
+  return 1;
+}
-- 
cgit v1.2.3