From 93b62c7d9abbb324853cd0df1ff5aeda27e3b5aa Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: Sun, 3 Apr 2016 19:46:57 -0400
Subject: driver: added -no-undefined support.

---
 include/slibtool/slibtool.h         | 2 ++
 src/driver/slbt_driver_ctx.c        | 4 ++++
 src/internal/slibtool_driver_impl.h | 1 +
 src/logic/slbt_exec_ctx.c           | 3 +++
 src/skin/slbt_skin_default.c        | 4 ++++
 5 files changed, 14 insertions(+)

diff --git a/include/slibtool/slibtool.h b/include/slibtool/slibtool.h
index b084eae..beeda86 100644
--- a/include/slibtool/slibtool.h
+++ b/include/slibtool/slibtool.h
@@ -50,6 +50,7 @@ extern "C" {
 
 #define SLBT_DRIVER_HEURISTICS		0x010000
 #define SLBT_DRIVER_STRICT		0x020000
+#define SLBT_DRIVER_NO_UNDEFINED	0x040000
 
 /* execution modes */
 enum slbt_mode {
@@ -91,6 +92,7 @@ struct slbt_exec_ctx {
 	char ** dpic;
 	char ** fpic;
 	char ** cass;
+	char ** noundef;
 	char ** lout[2];
 	char ** sentinel;
 	char *	csrc;
diff --git a/src/driver/slbt_driver_ctx.c b/src/driver/slbt_driver_ctx.c
index be43926..cb4aefb 100644
--- a/src/driver/slbt_driver_ctx.c
+++ b/src/driver/slbt_driver_ctx.c
@@ -697,6 +697,10 @@ int slbt_get_driver_ctx(
 					cctx.drvflags |= SLBT_DRIVER_ANTI_PIC;
 					break;
 
+				case TAG_NO_UNDEFINED:
+					cctx.drvflags |= SLBT_DRIVER_NO_UNDEFINED;
+					break;
+
 				case TAG_SHARED:
 					cctx.drvflags &= ~(uint64_t)SLBT_DRIVER_STATIC;
 					break;
diff --git a/src/internal/slibtool_driver_impl.h b/src/internal/slibtool_driver_impl.h
index 2753bf0..6798ed9 100644
--- a/src/internal/slibtool_driver_impl.h
+++ b/src/internal/slibtool_driver_impl.h
@@ -39,6 +39,7 @@ enum app_tags {
 	TAG_PREFER_NON_PIC,
 	TAG_SHARED,
 	TAG_STATIC,
+	TAG_NO_UNDEFINED,
 	TAG_COMPILER_FLAG,
 	TAG_VERBATIM_FLAG,
 };
diff --git a/src/logic/slbt_exec_ctx.c b/src/logic/slbt_exec_ctx.c
index 5529c0e..141a621 100644
--- a/src/logic/slbt_exec_ctx.c
+++ b/src/logic/slbt_exec_ctx.c
@@ -220,6 +220,8 @@ int  slbt_get_exec_ctx(
 	ictx->ctx.fpic = &ictx->ctx.argv[i++];
 	ictx->ctx.cass = &ictx->ctx.argv[i++];
 
+
+	ictx->ctx.noundef = &ictx->ctx.argv[i++];
 	ictx->ctx.lout[0] = &ictx->ctx.argv[i++];
 	ictx->ctx.lout[1] = &ictx->ctx.argv[i++];
 	ictx->ctx.sentinel= &ictx->ctx.argv[i++];
@@ -334,6 +336,7 @@ void slbt_reset_placeholders(struct slbt_exec_ctx * ectx)
 	*ectx->fpic = "-USLIBTOOL_PLACEHOLDER_FPIC";
 	*ectx->cass = "-USLIBTOOL_PLACEHOLDER_COMPILE_ASSEMBLE";
 
+	*ectx->noundef = "-USLIBTOOL_PLACEHOLDER_NO_UNDEFINED";
 	*ectx->lout[0] = "-USLIBTOOL_PLACEHOLDER_OUTPUT_SWITCH";
 	*ectx->lout[1] = "-USLIBTOOL_PLACEHOLDER_OUTPUT_FILE";
 	*ectx->sentinel= 0;
diff --git a/src/skin/slbt_skin_default.c b/src/skin/slbt_skin_default.c
index 8339024..e5f2648 100644
--- a/src/skin/slbt_skin_default.c
+++ b/src/skin/slbt_skin_default.c
@@ -122,5 +122,9 @@ const struct argv_option slbt_default_options[] = {
 				0,"<flag>",
 				"pass a raw flag to the compiler"},
 
+	{"no-undefined",	0,TAG_NO_UNDEFINED,ARGV_OPTARG_NONE,
+				ARGV_OPTION_HYBRID_ONLY,0,0,
+				"disallow unresolved references"},
+
 	{0,0,0,0,0,0,0,0}
 };
-- 
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