File 0002-Fix-shared-library-build.patch of Package libSNL

From e4ae44ab6e151f50696946fd0d88e18400cc7263 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Stefan=20Br=C3=BCns?= <stefan.bruens@rwth-aachen.de>
Date: Sun, 17 Nov 2024 07:53:17 +0100
Subject: [PATCH 2/5] Fix shared library build

---
 trunk/src/makefile | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/trunk/src/makefile b/trunk/src/makefile
index 12161e6..b31ec92 100644
--- a/trunk/src/makefile
+++ b/trunk/src/makefile
@@ -15,19 +15,19 @@ objFiles := snlCircularOffsetCurve.o \
 
 libName = libSNL.so.0.2
 
-export cflags = -Wall -fPIC -g 
-export cname = g++
+# rule for compiling c files for use with the dynamic library
+%.o: %.cpp
+	$(PURIFY) $(CXX) -c $(CFLAGS) $< -fPIC -DPIC -o $@
 
-CXXFLAGS := $(cflags)
-CFLAGS := $(cflags)
 
-libSNL:     $(objFiles)
+$(libName):     $(objFiles)
 	@       echo
 	@       echo "*** Building Shared Library ***"
 	@       echo
-	        $(cname) $(cflags) -shared -o $(libName) $(objFiles)
+	g++ -shared $? -Wl,-soname,libSNL.so.0.2 -o libSNL.so.0.2 -lm
+	ln -s libSNL.so.0.2 libSNL.so
 
-include                 make.dep
+-include                make.dep
 
 PHONY : dep
 dep:                    make.dep
@@ -36,7 +36,7 @@ make.dep :              $(objFiles:.o=.h) $(extraIncl)
 	@                   echo
 	@                   echo "*** Building Dependencies ***"
 	@                   echo
-	                    $(cname) -MM $(objFiles:.o=.cpp) > make.dep
+	                    $(CXX) -MM $(objFiles:.o=.cpp) > make.dep
 	@                   echo
 	@                   echo "*** Dependencies Built Okay ***"
 	@                   echo
@@ -46,5 +46,5 @@ clean:
 	                    rm $(objFiles) make.dep $(libName) snlTest
 
 test:       snlTest.cpp
-	        $(cname) $(cflags) snlTest.cpp -o snlTest $(objFiles)
+	$(PURIFY) $(CXX) snlTest.cpp -o snlTest $(objFiles)
 
-- 
2.47.0