Link to libbcc

src/CMakeLists.txt

@@ -34,3 +34,14 @@ add_executable(bpftrace main.cpp driver.cpp parser.tab.cc lex.yy.cc ast.cpp prin
 
 llvm_map_components_to_libnames(llvm_libs irreader bpfcodegen mcjit)
 target_link_libraries(bpftrace ${llvm_libs})
+
+include(ExternalProject)
+ExternalProject_Add(bcc
+  GIT_REPOSITORY https://github.com/iovisor/bcc
+  STEP_TARGETS build
+  EXCLUDE_FROM_ALL 1
+)
+add_dependencies(bpftrace bcc-build)
+ExternalProject_Get_Property(bcc source_dir binary_dir)
+include_directories(${source_dir}/src/cc)
+target_link_libraries(bpftrace ${binary_dir}/src/cc/libbcc.so)

src/map.cpp

 #include <unistd.h>
 
 #include "map.h"
+#include "libbpf.h"
 
 namespace ebpf {
 namespace bpftrace {
 
-int Map::n = 0;
-
 Map::Map() {
-  // TODO create map here
-  mapfd_ = n++;
+  mapfd_ = bpf_create_map(BPF_MAP_TYPE_HASH, 8, 8, 128, 0);
+  // TODO check mapfd_ != -1
 }
 
 Map::~Map() {

src/map.h

@@ -12,7 +12,6 @@ public:
   ~Map();
 
   int mapfd_;
-  static int n;
 };
 
 } // namespace bpftrace