slibtoolize: prefer libsltdl unless invoked with the --system-ltdl argument.

8 files changed, 132 insertions, 3 deletions

diff --git a/m4/slibtool.m4 b/m4/slibtool.m4
index b1ed75b..355b8c4 100644
--- a/m4/slibtool.m4
+++ b/m4/slibtool.m4
@@ -253,6 +253,12 @@ slibtool_set_flavor()
 			;;
 	esac
 
+	case "_${slibtool_prefer_sltdl:-}" in
+		'_yes')
+			SLIBTOOL="${SLIBTOOL} --prefer-sltdl"
+			;;
+	esac
+
 	# drop-in replacement
 	enable_shared=${slibtool_enable_shared}
 	enable_static=${slibtool_enable_static}
@@ -448,6 +454,7 @@ AC_DEFUN([SLIBTOOL_INIT],[
 AC_BEFORE([SLIBTOOL_LANG])
 AC_REQUIRE([SLIBTOOL_PREREQ])
 AC_REQUIRE([_SLIBTOOL_DEFAULTS])
+AC_REQUIRE([_SLIBTOOL_SLTDL_OPTION])
 AC_REQUIRE([_SLIBTOOL_SET_FLAVOR])
 AC_REQUIRE([_SLIBTOOL_ARGUMENT_HANDLING])
 
diff --git a/m4/sltdl.m4 b/m4/sltdl.m4
new file mode 100644
index 0000000..4d15333
--- /dev/null
+++ b/m4/sltdl.m4
@@ -0,0 +1,39 @@
+###############################################################################
+#                                                                             #
+#   sltdl.m4: native libsltdl integration for autoconf-based projects         #
+#                                                                             #
+#   Copyright (C) 2016--2025  SysDeer Technologies, LLC                       #
+#                                                                             #
+#   Permission is hereby granted, free of charge, to any person obtaining     #
+#   a copy of this software and associated documentation files (the           #
+#   "Software"), to deal in the Software without restriction, including       #
+#   without limitation the rights to use, copy, modify, merge, publish,       #
+#   distribute, sublicense, and/or sell copies of the Software, and to        #
+#   permit persons to whom the Software is furnished to do so, subject to     #
+#   the following conditions:                                                 #
+#                                                                             #
+#   The above copyright notice and this permission notice shall be included   #
+#   in all copies or substantial portions of the Software.                    #
+#                                                                             #
+#   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS   #
+#   OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF                #
+#   MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.    #
+#   IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY      #
+#   CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,      #
+#   TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE         #
+#   SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                    #
+#                                                                             #
+###############################################################################
+
+
+
+# __SLIBTOOL_SLTDL_OPTION
+# ------------------
+AC_DEFUN([_SLIBTOOL_SLTDL_OPTION],[
+AC_BEFORE([$0],[SLIBTOOL_INIT])
+AC_BEFORE([$0],[_SLIBTOOL_ARGUMENT_HANDLING])
+
+# slibtool: sltdl option
+# ---------------------------------
+slibtool_prefer_sltdl='yes'
+])
diff --git a/m4/sysltdl.m4 b/m4/sysltdl.m4
new file mode 100644
index 0000000..baeb847
--- /dev/null
+++ b/m4/sysltdl.m4
@@ -0,0 +1,39 @@
+###############################################################################
+#                                                                             #
+#   sysltdl.m4: system libltdl integration for autoconf-based projects        #
+#                                                                             #
+#   Copyright (C) 2016--2025  SysDeer Technologies, LLC                       #
+#                                                                             #
+#   Permission is hereby granted, free of charge, to any person obtaining     #
+#   a copy of this software and associated documentation files (the           #
+#   "Software"), to deal in the Software without restriction, including       #
+#   without limitation the rights to use, copy, modify, merge, publish,       #
+#   distribute, sublicense, and/or sell copies of the Software, and to        #
+#   permit persons to whom the Software is furnished to do so, subject to     #
+#   the following conditions:                                                 #
+#                                                                             #
+#   The above copyright notice and this permission notice shall be included   #
+#   in all copies or substantial portions of the Software.                    #
+#                                                                             #
+#   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS   #
+#   OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF                #
+#   MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.    #
+#   IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY      #
+#   CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,      #
+#   TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE         #
+#   SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                    #
+#                                                                             #
+###############################################################################
+
+
+
+# __SLIBTOOL_SLTDL_OPTION
+# ------------------
+AC_DEFUN([_SLIBTOOL_SLTDL_OPTION],[
+AC_BEFORE([$0],[SLIBTOOL_INIT])
+AC_BEFORE([$0],[_SLIBTOOL_ARGUMENT_HANDLING])
+
+# slibtool: sltdl option
+# ---------------------------------
+slibtool_prefer_sltdl='no'
+])
diff --git a/project/extras.mk b/project/extras.mk
index a254d9c..2679189 100644
--- a/project/extras.mk
+++ b/project/extras.mk
@@ -107,6 +107,8 @@ install-slibtoolize:
 	mkdir -p $(DESTDIR)$(DATADIR)/$(PACKAGE)
 
 	cp -p $(SOURCE_DIR)/m4/slibtool.m4            $(DESTDIR)$(DATADIR)/$(PACKAGE)
+	cp -p $(SOURCE_DIR)/m4/sysltdl.m4             $(DESTDIR)$(DATADIR)/$(PACKAGE)
+	cp -p $(SOURCE_DIR)/m4/sltdl.m4               $(DESTDIR)$(DATADIR)/$(PACKAGE)
 	cp -p $(SOURCE_DIR)/aux/ltmain.sh             $(DESTDIR)$(DATADIR)/$(PACKAGE)
 	cp -p $(SOURCE_DIR)/aux/slibtool.sh           $(DESTDIR)$(DATADIR)/$(PACKAGE)
 	cp -p $(SOURCE_DIR)/aux/ar-lib                $(DESTDIR)$(DATADIR)/$(PACKAGE)
diff --git a/src/driver/slbt_amain.c b/src/driver/slbt_amain.c
index a9cc118..bcf88ba 100644
--- a/src/driver/slbt_amain.c
+++ b/src/driver/slbt_amain.c
@@ -157,10 +157,10 @@ int slbt_main(char ** argv, char ** envp, const struct slbt_fd_ctx * fdctx)
 
 	/* slibtoolize (stoolie) mode */
 	if (!(strcmp(program,"stoolie")))
-		flags |= SLBT_DRIVER_MODE_STOOLIE;
+		flags |= SLBT_DRIVER_MODE_STOOLIE | SLBT_DRIVER_PREFER_SLTDL;
 
 	else if (!(strcmp(program,"slibtoolize")))
-		flags |= SLBT_DRIVER_MODE_STOOLIE;
+		flags |= SLBT_DRIVER_MODE_STOOLIE | SLBT_DRIVER_PREFER_SLTDL;
 
 	/* debug */
 	if (!(strcmp(program,"dlibtool")))
diff --git a/src/internal/slibtool_driver_impl.h b/src/internal/slibtool_driver_impl.h
index 83c7ad9..e20023f 100644
--- a/src/internal/slibtool_driver_impl.h
+++ b/src/internal/slibtool_driver_impl.h
@@ -126,6 +126,7 @@ enum app_tags {
 	TAG_STLE_WARNINGS,
 	TAG_STLE_NO_WARNINGS,
 	TAG_STLE_LTDL,
+	TAG_STLE_SYSTEM_LTDL,
 };
 
 struct slbt_split_vector {
diff --git a/src/logic/slbt_exec_stoolie.c b/src/logic/slbt_exec_stoolie.c
index 779146a..8061833 100644
--- a/src/logic/slbt_exec_stoolie.c
+++ b/src/logic/slbt_exec_stoolie.c
@@ -87,13 +87,18 @@ static int slbt_exec_stoolie_perform_actions(
 	char                            m4dir [PATH_MAX];
 	char                            auxdir[PATH_MAX];
 	char                            slibm4[PATH_MAX];
+	char                            sltdl [PATH_MAX];
+	char                            m4ltdl[PATH_MAX];
 	char                            ltmain[PATH_MAX];
 	char                            arlib [PATH_MAX];
 	bool                            fslibm4;
+	bool                            fsltdl;
 	bool                            fltmain;
 
 	ictx = slbt_get_stoolie_ictx(stctx);
 
+	fsltdl = (dctx->cctx->drvflags & SLBT_DRIVER_PREFER_SLTDL);
+
 	/* source files */
 	if (slbt_snprintf(
 			slibm4,sizeof(slibm4),"%s/%s",
@@ -102,6 +107,12 @@ static int slbt_exec_stoolie_perform_actions(
 		return SLBT_BUFFER_ERROR(dctx);
 
 	if (slbt_snprintf(
+			sltdl,sizeof(sltdl),"%s/%s",
+			SLBT_PACKAGE_DATADIR,
+			fsltdl ? "sltdl.m4" : "sysltdl.m4") < 0)
+		return SLBT_BUFFER_ERROR(dctx);
+
+	if (slbt_snprintf(
 			ltmain,sizeof(ltmain),"%s/%s",
 			SLBT_PACKAGE_DATADIR,
 			"ltmain.sh") < 0)
@@ -119,6 +130,10 @@ static int slbt_exec_stoolie_perform_actions(
 			if (slbt_exec_stoolie_remove_file(dctx,ictx->fdm4,"slibtool.m4") < 0)
 				return SLBT_NESTED_ERROR(dctx);
 
+		if (ictx->fdm4 >= 0)
+			if (slbt_exec_stoolie_remove_file(dctx,ictx->fdm4,"sltdl.m4") < 0)
+				return SLBT_NESTED_ERROR(dctx);
+
 		if (slbt_exec_stoolie_remove_file(dctx,ictx->fdaux,"ltmain.sh") < 0)
 			return SLBT_NESTED_ERROR(dctx);
 
@@ -158,8 +173,16 @@ static int slbt_exec_stoolie_perform_actions(
 			if (slbt_realpath(ictx->fdm4,".",0,m4dir,sizeof(m4dir)) < 0)
 				return SLBT_SYSTEM_ERROR(dctx,0);
 
+			if (slbt_snprintf(
+					m4ltdl,sizeof(m4ltdl),"%s/%s",
+					m4dir,"sltdl.m4") < 0)
+				return SLBT_BUFFER_ERROR(dctx);
+
 			if (slbt_util_copy_file(ectx,slibm4,m4dir) < 0)
 				return SLBT_NESTED_ERROR(dctx);
+
+			if (slbt_util_copy_file(ectx,sltdl,m4ltdl) < 0)
+				return SLBT_NESTED_ERROR(dctx);
 		}
 
 		if (fltmain) {
@@ -174,7 +197,7 @@ static int slbt_exec_stoolie_perform_actions(
 		}
 	} else {
 		/* default to symlinks */
-		if (fslibm4)
+		if (fslibm4) {
 			if (slbt_create_symlink_ex(
 					dctx,ectx,
 					ictx->fdm4,
@@ -183,6 +206,15 @@ static int slbt_exec_stoolie_perform_actions(
 					SLBT_SYMLINK_LITERAL) < 0)
 				return SLBT_NESTED_ERROR(dctx);
 
+			if (slbt_create_symlink_ex(
+					dctx,ectx,
+					ictx->fdm4,
+					sltdl,
+					"sltdl.m4",
+					SLBT_SYMLINK_LITERAL) < 0)
+				return SLBT_NESTED_ERROR(dctx);
+		}
+
 		if (fltmain) {
 			if (slbt_create_symlink_ex(
 					dctx,ectx,
@@ -311,6 +343,10 @@ int slbt_exec_stoolie(const struct slbt_driver_ctx * dctx)
 					ictx->cctx.drvflags &= ~(uint64_t)SLBT_DRIVER_SILENT;
 					ictx->cctx.drvflags |= SLBT_DRIVER_VERBOSE;
 					break;
+
+				case TAG_STLE_SYSTEM_LTDL:
+					ictx->cctx.drvflags &= ~(uint64_t)SLBT_DRIVER_PREFER_SLTDL;
+					break;
 			}
 
 			if (entry->fval) {
diff --git a/src/skin/slbt_skin_stoolie.c b/src/skin/slbt_skin_stoolie.c
index 3a8cdb1..3140d22 100644
--- a/src/skin/slbt_skin_stoolie.c
+++ b/src/skin/slbt_skin_stoolie.c
@@ -54,5 +54,10 @@ const slbt_hidden struct argv_option slbt_stoolie_options[] = {
 			"compatibility, and is currently a no-op, thereby "
 			"deferring -lltdl to the system installed library."},
 
+	{"system-ltdl",0,TAG_STLE_SYSTEM_LTDL,ARGV_OPTARG_NONE,0,0,0,
+			"Do not enforce the use of libsltdl. "
+			"Without this option, --prefer-sltdl will be added to "
+			"slibtool's configured arguments."},
+
 	{0,0,0,0,0,0,0,0}
 };