[cmake] Replace using wget with file(DOWNLOAD)

This helps reduce the dependency on wget at cmake configure time which is
non-standard for OSX.

CMakeLists.txt

@@ -191,11 +191,6 @@ if (jemalloc)
   set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -ljemalloc -L ${JEMALLOC_LIBRARY_DIR}")
 endif()
 
-find_program(WGET_BIN wget)
-if (NOT WGET_BIN)
-  message(FATAL_ERROR "The program wget was not found in your system. Please run ./prerequisites.sh again before calling cmake.")
-endif()
-
 if (APPLE)
    set(NOPYENV YES)
 endif()

cmake/UseBioDynaMo.cmake.in

@@ -143,11 +143,6 @@ if (jemalloc)
   set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -ljemalloc -L ${JEMALLOC_LIBRARY_DIR}")
 endif()
 
-find_program(WGET_BIN wget)
-if (NOT WGET_BIN)
-  message(FATAL_ERROR "The program wget was not found in your system. Please run ./prerequisites.sh again before calling cmake.")
-endif()
-
 # In order to correctly compile and link the multi simulation manager with MPI,
 # you need to set CMAKE_[CXX|C]_COMPILER to [mpic++|mpicc]
 # We still however need to explicitly add the mpi.h include path to our include_directories

cmake/utils.cmake

@@ -533,15 +533,8 @@ Unset the environment variable BDM_LOCAL_LFS to download the file.")
     endif()
   else()
     # Download the file
-    if (${DETECTED_OS} MATCHES "centos.*")
-        execute_process(COMMAND ${WGET_BIN} --progress=bar:force
-                        -O ${FULL_TAR_PATH} ${URL}
-                        RESULT_VARIABLE DOWNLOAD_STATUS_CODE)
-    else()
-        execute_process(COMMAND ${WGET_BIN} -nv --show-progress --progress=bar:force:noscroll
-                        -O ${FULL_TAR_PATH} ${URL}
-                        RESULT_VARIABLE DOWNLOAD_STATUS_CODE)
-    endif()
+    file(DOWNLOAD ${URL} ${FULL_TAR_PATH} SHOW_PROGRESS STATUS DOWNLOAD_STATUS)
+    list(GET DOWNLOAD_STATUS 0 DOWNLOAD_STATUS_CODE)
     if (NOT ${DOWNLOAD_STATUS_CODE} EQUAL 0)
       message( FATAL_ERROR "\nERROR: We were unable to download:\
     ${URL}\n\

doc/user_guide/prerequisites.md

@@ -28,7 +28,6 @@ BioDynaMo provides also an automated procedure to install all the needed librari
 
 ### Required Packages
 
-  * **wget**: Retrieves files from the web
   * **curl**: Command line tool for transferring data with URL syntax
   * **cmake**: Set of tools for automate building, testing of software
   * **make**: Build automation tool
@@ -74,7 +73,7 @@ BioDynaMo provides also an automated procedure to install all the needed librari
 
 ```bash
 sudo apt-get update
-sudo apt-get install -y wget curl make gcc g++ \
+sudo apt-get install -y curl make gcc g++ \
 libblas-dev liblapack-dev libopenmpi-dev libomp5 libomp-dev \ 
 libnuma-dev freeglut3-dev libpthread-stubs0-dev
 
@@ -123,7 +122,6 @@ sudo apt-get install -y kcov
 
  * **epel-release**: Provides a set of additional packages for Enterprise Linux
  * **ius-release**: Provides RPM packages for newer software versions for for Enterprise Linux distributions
- * **wget**: Retrieves files from the web
  * **cmake**: Set of tools for automate building, testing of software
  * **libXt-devel**: Basic library for developing X11
  * **libXext-devel**: Library which contains a handful of X11 extensions
@@ -169,7 +167,7 @@ sudo apt-get install -y kcov
 sudo yum update -y
 sudo yum -y install centos-release-scl epel-release
 sudo yum -y install https://centos7.iuscommunity.org/ius-release.rpm
-sudo yum -y install wget libXt-devel libXext-devel \
+sudo yum -y install libXt-devel libXext-devel \
   devtoolset-8-gcc* numactl-devel \
   openmpi3-devel freeglut-devel git
 
@@ -230,7 +228,6 @@ Requirements to build on macOS are:
  * **libomp**: Development files for OpenMP (API for multiprocessor programming)
  * **open-mpi**: Development files for OpenMP (API for multiprocessor programming)
  * **python@3.9**: Python interpreter
- * **wget**: Retrieves files from the web
  * **cmake**: Set of tools for automate building, testing of software
  * **ninja**: Ninja is a small build system with a focus on speed
  * **bash**: Recent version of bash shell
@@ -251,7 +248,7 @@ Requirements to build on macOS are:
 
 ```bash
 brew update; brew upgrade
-brew install libomp open-mpi python@3.9 wget cmake ninja bash tbb qt@5
+brew install libomp open-mpi python@3.9 cmake ninja bash tbb qt@5
 ```
 
 #### Optional Packages

util/installation/osx/package_list_required

@@ -2,7 +2,6 @@ tbb
 libomp
 open-mpi
 python@3.9
-wget
 cmake
 ninja
 bash