diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..567609b
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+build/
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4d688c9..19f6f40 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,13 +1,48 @@
 cmake_minimum_required(VERSION 3.12)
 project(MadNLP_C VERSION 1.0.0)  # Adjust the version as necessary
 
-set(Julia_EXECUTABLE julia)
+set(Julia_EXECUTABLE /usr/bin/julia)
+set(BUILD_SCRIPT ${PROJECT_SOURCE_DIR}/compiler/build.jl)
+set(MADNLP_VERSION "nd" CACHE STRING "MadNLP Julia Library Version")
+
+message(CHECK_START "Reading MadNLP.jl version")
+execute_process(
+  COMMAND ${Julia_EXECUTABLE} --startup-file=no --project=./ -e "using Pkg; Pkg.instantiate();m=Pkg.dependencies();v=m[findfirst(v->v.name==\"MadNLP\",m)].version; print(v);"
+  OUTPUT_VARIABLE MADNLP_VERSION
+  WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+)
+message(CHECK_PASS ${MADNLP_VERSION})
+
+set(MADNLP_C_FULLNAME madnlp_c-${MADNLP_VERSION}-${PROJECT_VERSION})
 
 add_custom_command(
-  OUTPUT FOO
-  COMMAND ${Julia_EXECUTABLE} --startup-file=no --project=compiler -e "using Pkg; Pkg.instantiate()"
+  OUTPUT ${PROJECT_BINARY_DIR}/MadNLP_env_status.txt
+  COMMAND ${Julia_EXECUTABLE} --startup-file=no --project=./ -e "using Pkg; Pkg.instantiate()"
+  COMMAND ${Julia_EXECUTABLE} --startup-file=no --project=./ -e "using Pkg; Pkg.status()" > ${PROJECT_BINARY_DIR}/MadNLP_env_status.txt
   WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
   COMMENT "Instantiating Julia packages"
+  VERBATIM
+)
+
+add_custom_command(
+  OUTPUT ${PROJECT_BINARY_DIR}/PackageCompiler_env_status.txt
+  DEPENDS ${PROJECT_BINARY_DIR}/MadNLP_env_status.txt
+  COMMAND ${Julia_EXECUTABLE} --startup-file=no --project=./ -e "using Pkg; Pkg.instantiate()"
+  COMMAND ${Julia_EXECUTABLE} --startup-file=no --project=compiler -e "using Pkg; Pkg.instantiate()"
+  COMMAND ${Julia_EXECUTABLE} --startup-file=no --project=compiler -e "using Pkg; Pkg.status()" > ${PROJECT_BINARY_DIR}/PackageCompiler_env_status.txt
+  WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+  COMMENT "Instantiating Julia build packages"
+  VERBATIM
 )
 
+add_custom_command(
+  OUTPUT ${PROJECT_BINARY_DIR}/${MADNLP_C_FULLNAME}
+  DEPENDS ${PROJECT_BINARY_DIR}/PackageCompiler_env_status.txt
+  COMMAND ${Julia_EXECUTABLE} --startup-file=no --project=compiler ${BUILD_SCRIPT} ${PROJECT_BINARY_DIR}/${MADNLP_FULLNAME}
+  WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+  COMMENT "Create Madnlp precompiled library sysimage"
+)
 
+add_custom_target(madnlp_c ALL
+  DEPENDS ${PROJECT_BINARY_DIR}/${MADNLP_C_FULLNAME}
+)