File libixion-boost-system.patch of Package libixion

--- libixion-0.20.0/libixion.pc.in	2025-09-10 23:27:21.331472280 +0200
+++ libixion-0.20.0/libixion.pc.in	2025-09-10 23:27:48.607696425 +0200
@@ -6,6 +6,6 @@
 Name: libixion-@IXION_API_VERSION@
 Description: Generic formula computation library
 Version: @VERSION@
-Libs: -L${libdir} -lixion-@IXION_API_VERSION@
+Libs: -L${libdir} -lixion-@IXION_API_VERSION@ @BOOST_SYSTEM_LIBS@
 Cflags: -I${includedir}/libixion-@IXION_API_VERSION@
 
--- libixion-0.20.0/src/Makefile.am	2025-09-10 23:27:21.340640878 +0200
+++ libixion-0.20.0/src/Makefile.am	2025-09-10 23:27:29.557321908 +0200
@@ -19,7 +19,7 @@
 	table_handler.cpp
 
 ixion_parser_LDADD = libixion/libixion-@IXION_API_VERSION@.la \
-	$(BOOST_PROGRAM_OPTIONS_LIBS)
+	$(BOOST_PROGRAM_OPTIONS_LIBS) $(BOOST_SYSTEM_LIBS)
 
 ixion_sorter_SOURCES = \
 	ixion_sorter.cpp \
--- libixion-0.20.0/src/python/Makefile.am	2025-09-10 23:27:21.341197499 +0200
+++ libixion-0.20.0/src/python/Makefile.am	2025-09-10 23:27:29.557577922 +0200
@@ -16,7 +16,7 @@
 ixion_la_CPPFLAGS = -I$(top_srcdir)/include $(PYTHON_CFLAGS) $(MDDS_CFLAGS)
 ixion_la_LIBADD = \
 	../libixion/libixion-@IXION_API_VERSION@.la \
-	$(PYTHON_LIBS)
+	$(PYTHON_LIBS) $(BOOST_SYSTEM_LIBS)
 
 if OSX