diff --git a/CMakeLists.txt b/CMakeLists.txt
index 68ecf1725..e040ae648 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -53,7 +53,7 @@ set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
 set(CMAKE_CXX_FLAGS_RELEASE "$ENV{CXXFLAGS} -O3 -Wall -Werror=return-type")
 set(CMAKE_CXX_FLAGS_DEBUG "$ENV{CXXFLAGS} -O0 -g -Wall -Werror=return-type")
 # set(CMAKE_BUILD_TYPE "Release")
-set(BUILD_ECOS ON)
+set(BUILD_ECOS OFF)
 set(CMAKE_CXX_FLAGS_DEBUG "$ENV{CXXFLAGS} -O0 -Wall -g2 -ggdb -Werror=return-type")
 
 # if(NOT DEFINED CMAKE_BUILD_TYPE OR CMAKE_BUILD_TYPE STREQUAL "")
diff --git a/src/interface/CMakeLists.txt b/src/interface/CMakeLists.txt
index 9282468b1..722b2b212 100644
--- a/src/interface/CMakeLists.txt
+++ b/src/interface/CMakeLists.txt
@@ -1,5 +1,4 @@
 add_subdirectory(tcl)
-add_subdirectory(shell)
 
 if(BUILD_PYTHON)
     add_subdirectory(python)
diff --git a/src/interface/shell/CMakeLists.txt b/src/interface/shell/CMakeLists.txt
deleted file mode 100644
index e69de29bb..000000000
diff --git a/src/operation/CMakeLists.txt b/src/operation/CMakeLists.txt
index aec1192aa..aaaf121cc 100644
--- a/src/operation/CMakeLists.txt
+++ b/src/operation/CMakeLists.txt
@@ -2,8 +2,6 @@ add_subdirectory(iDRC)
 add_subdirectory(iECO)
 add_subdirectory(iFP)
 add_subdirectory(iIR)
-add_subdirectory(iLO)
-add_subdirectory(iTM)
 add_subdirectory(iPDN)
 add_subdirectory(iPNP)
 add_subdirectory(iPL)
diff --git a/src/operation/iLO/CMakeLists.txt b/src/operation/iLO/CMakeLists.txt
deleted file mode 100644
index e69de29bb..000000000
diff --git a/src/operation/iTM/CMakeLists.txt b/src/operation/iTM/CMakeLists.txt
deleted file mode 100644
index e69de29bb..000000000
diff --git a/src/solver/clustering/TBD b/src/solver/clustering/TBD
deleted file mode 100644
index e69de29bb..000000000
diff --git a/src/solver/partition/TBD b/src/solver/partition/TBD
deleted file mode 100644
index e69de29bb..000000000
diff --git a/src/solver/qudratic_programming/TBD b/src/solver/qudratic_programming/TBD
deleted file mode 100644
index e69de29bb..000000000
diff --git a/src/solver/steiner_forest/TBD b/src/solver/steiner_forest/TBD
deleted file mode 100644
index e69de29bb..000000000
diff --git a/src/solver/two_pin_routing/TBD b/src/solver/two_pin_routing/TBD
deleted file mode 100644
index e69de29bb..000000000