[PATCH v3] trace-cruncher: Build trace-obj-debug.c as library

["Yordan Karadzhov (VMware)" <y.karadz@gmail.com>]

The code for resolving virtual address to function name gets build
as shared library. The library is installed as package data. Later
this library can be used by the different sub-modules of tracecruncher.

Signed-off-by: Yordan Karadzhov (VMware) <y.karadz@gmail.com>
---

This patch applies on top of the patch:
https://lore.kernel.org/all/20220420080206.252356-2-tz.stoyanov@gmail.com/

Changes in v2:
 - Fixing the problem of '$ORIGIN' not being properly added to
   the 'RUNPATH' of the shared libraries, built by the sub-modules. 

Changes in v3:
 - The name of the library changet to 'libtcrunchbase.so'. Some Makefile
   variables are changed accordingly.

 Makefile | 24 +++++++++++++++++++++---
 setup.py |  4 ++--
 2 files changed, 23 insertions(+), 5 deletions(-)

diff --git a/Makefile b/Makefile
index 52428c0..d359ea6 100644
--- a/Makefile
+++ b/Makefile
@@ -13,13 +13,31 @@ NC	:= '\e[0m'
 
 DOCDIR = ./docs
 
-all:
+CC = gcc
+CFLAGS = -fPIC -Wall -Wextra -O2 -g
+LDFLAGS = -shared -lbfd
+RM = rm -rf
+
+TC_BASE_LIB = tracecruncher/libtcrunchbase.so
+PY_SETUP = setup
+
+BASE_SRCS = src/trace-obj-debug.c
+BASE_OBJS = $(BASE_SRCS:.c=.o)
+
+all: $(TC_BASE_LIB) $(PY_SETUP)
 	@ echo ${CYAN}Buildinging trace-cruncher:${NC};
+
+$(PY_SETUP):
 	python3 setup.py build
 
+$(TC_BASE_LIB): $(BASE_OBJS)
+	$(CC) $(CFLAGS) -o $@ $^ $(LDFLAGS)
+
 clean:
-	rm -f src/npdatawrapper.c
-	rm -rf build
+	${RM} src/npdatawrapper.c
+	${RM} $(TC_BASE_LIB)
+	${RM} src/*.o
+	${RM} build
 
 install:
 	@ echo ${CYAN}Installing trace-cruncher:${NC};
diff --git a/setup.py b/setup.py
index 58561cf..aca634c 100644
--- a/setup.py
+++ b/setup.py
@@ -37,7 +37,7 @@ def add_library(lib, min_version,
         libs_found.extend([(lib, lib_version)])
 
 def third_party_paths():
-    library_dirs = []
+    library_dirs = ['$ORIGIN','tracecruncher']
     include_dirs = [np.get_include()]
     libs_required = [('libtraceevent', '1.5.0'),
                      ('libtracefs',    '1.3.0'),
@@ -61,7 +61,6 @@ include_dirs, library_dirs = third_party_paths()
 
 def extension(name, sources, libraries):
     runtime_library_dirs = library_dirs
-    runtime_library_dirs.extend('$ORIGIN')
     return Extension(name, sources=sources,
                            include_dirs=include_dirs,
                            library_dirs=library_dirs,
@@ -91,6 +90,7 @@ def main():
           url='https://github.com/vmware/trace-cruncher',
           license='LGPL-2.1',
           packages=find_packages(),
+          package_data={'tracecruncher': ['*.so']},
           ext_modules=[module_ft, module_data, module_ks],
           classifiers=[
               'Development Status :: 4 - Beta',
-- 
2.32.0