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Creating an Ansible role for building and installing GCC with support for `cloog`, `gmp`, `isl`, `mpc`, and `mpfr`, and also creating an Lmod module file involves several detailed steps. Here's a comprehensive outline of how to set up such a role:

### 1. **Role Directory Structure**
Create a new Ansible role named, say, `gcc_custom_build`.

```bash
ansible-galaxy init gcc_custom_build
```

This command creates the standard directory structure for the role.

### 2. **Define Variables**
In `gcc_custom_build/vars/main.yml`, define variables such as versions and installation paths.

```yaml
gcc_version: "10.2.0"
gmp_version: "6.2.1"
mpfr_version: "4.1.0"
mpc_version: "1.2.1"
isl_version: "0.23"
cloog_version: "0.18.1"
gcc_install_dir: "/opt/gcc"
lmod_module_dir: "/opt/modulefiles/gcc"
```

### 3. **Install Dependencies**
In `gcc_custom_build/tasks/main.yml`, start by installing dependencies.

```yaml
- name: Install development tools and libraries
  yum:
    name:
      - make
      - gcc
      - gcc-c++
      - bzip2
      - autoconf
      - automake
    state: present
```

### 4. **Download and Install Libraries**
Create tasks to download, configure, compile, and install each library. Repeat the following pattern for `gmp`, `mpfr`, `mpc`, `isl`, and `cloog`, adjusting URLs and directory names as needed:

```yaml
- name: Download GMP
  get_url:
    url: "https://gmplib.org/download/gmp/gmp-{{ gmp_version }}.tar.xz"
    dest: "/tmp/gmp-{{ gmp_version }}.tar.xz"

- name: Extract GMP
  unarchive:
    src: "/tmp/gmp-{{ gmp_version }}.tar.xz"
    dest: "/usr/local/src"
    remote_src: yes

- name: Configure GMP
  command: >
    ./configure --prefix=/usr/local
  args:
    chdir: /usr/local/src/gmp-{{ gmp_version }}

- name: Build and install GMP
  make:
    chdir: /usr/local/src/gmp-{{ gmp_version }}
    target: install
```

### 5. **Download, Configure, Build, and Install GCC**
After installing the libraries, download and install GCC, ensuring it links against the newly installed libraries.

```yaml
- name: Download GCC source
  get_url:
    url: "http://ftp.gnu.org/gnu/gcc/gcc-{{ gcc_version }}/gcc-{{ gcc_version }}.tar.gz"
    dest: "/tmp/gcc-{{ gcc_version }}.tar.gz"

- name: Extract GCC source
  unarchive:
    src: "/tmp/gcc-{{ gcc_version }}.tar.gz"
    dest: "/usr/local/src"
    remote_src: yes

- name: Configure GCC
  command: >
    ./configure --prefix={{ gcc_install_dir }} --with-gmp=/usr/local --with-mpfr=/usr/local --with-mpc=/usr/local --with-isl=/usr/local --with-cloog=/usr/local --enable-languages=c,c++ --disable-multilib
  args:
    chdir: /usr/local/src/gcc-{{ gcc_version }}

- name: Build and install GCC
  make:
    chdir: /usr/local/src/gcc-{{ gcc_version }}
    target: install
```

### 6. **Create Lmod Module File for GCC**
Finally, create an Lmod module file for GCC.

```yaml
- name: Create Lmod module directory for GCC
  file:
    path: "{{ lmod_module_dir }}"
    state: directory
    mode: '0755'

- name: Create GCC module file
  copy:
    dest: "{{ lmod_module_dir }}/gcc-{{ gcc_version }}.lua"
    content: |
      help([[
      This is the modulefile for GCC version {{ gcc_version }}.
      ]])
      
      prepend_path("PATH", "{{ gcc_install_dir }}/bin")
      prepend_path("LD_LIBRARY_PATH", "{{ gcc_install_dir }}/lib64")
      setenv("CC", "{{ gcc_install_dir }}/bin/gcc")
      setenv("CXX", "{{ gcc_install_dir }}/bin/g++")
```

### 7. **Testing and Documentation**
- Test the role to ensure all tasks execute successfully.
- Document the role in `README.md`, including instructions and information about variables.

### Notes:
- Ensure the tasks are idempotent and include error handling where necessary.
- The download URLs and versions of libraries should be the latest