From d5dbbaf2fe6a1e3704ca865a8583d51f13c94a20 Mon Sep 17 00:00:00 2001
From: Sebastian Ehlert <28669218+awvwgk@users.noreply.github.com>
Date: Thu, 24 Feb 2022 13:21:08 +0100
Subject: [PATCH] Add meson build files (#42)

- use micromamba to install dependencies
---
 .github/workflows/CI.yml | 86 +++++++++++++++++++++-------------------
 config/ci/docs-env.yaml  | 10 +++++
 config/ci/fpm-env.yaml   |  5 +++
 config/ci/meson-env.yaml |  6 +++
 config/install-mod.py    | 30 ++++++++++++++
 examples/meson.build     | 19 +++++++++
 meson.build              | 61 ++++++++++++++++++++++++++++
 test/meson.build         | 32 +++++++++++++++
 8 files changed, 208 insertions(+), 41 deletions(-)
 create mode 100644 config/ci/docs-env.yaml
 create mode 100644 config/ci/fpm-env.yaml
 create mode 100644 config/ci/meson-env.yaml
 create mode 100644 config/install-mod.py
 create mode 100644 examples/meson.build
 create mode 100644 meson.build
 create mode 100644 test/meson.build

diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index dad610b..4c4b63b 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -7,9 +7,17 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
+        build: [fpm, meson]
         os: [ubuntu-latest, macos-latest, windows-latest]
         gcc: [10] # Version of GFortran we want to use.
-
+    defaults:
+      run:
+        shell: ${{ contains(matrix.os, 'windows') && 'powershell' || 'bash -l {0}' }}
+    env:
+      FC: gfortran
+      CC: gcc
+      FPM_FC: gfortran
+      FPM_CC: gcc
     steps:
     - name: Checkout code
       uses: actions/checkout@v2
@@ -21,6 +29,7 @@ jobs:
       run: |
         brew install gcc@${{ matrix.gcc }}
         ln -s /usr/local/bin/gfortran-${{ matrix.gcc }} /usr/local/bin/gfortran
+        ln -s /usr/local/bin/gcc-${{ matrix.gcc }} /usr/local/bin/gcc
 
     - name: Install GFortran (Linux)
       if: ${{ contains(matrix.os, 'ubuntu') }}
@@ -36,35 +45,50 @@ jobs:
         Invoke-WebRequest -Uri ${{ env.DOWNLOAD }} -OutFile mingw-w64.zip
         Expand-Archive mingw-w64.zip
         echo "$pwd\mingw-w64\mingw64\bin" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
+      shell: pwsh
       env:
         DOWNLOAD: "https://github.com/brechtsanders/winlibs_mingw/releases/download/10.3.0-12.0.0-9.0.0-r2/winlibs-x86_64-posix-seh-gcc-10.3.0-mingw-w64-9.0.0-r2.zip"
 
-    - name: Setup Fortran Package Manager
-      uses: fortran-lang/setup-fpm@v3
+    - name: Install dependencies
+      uses: mamba-org/provision-with-micromamba@main
       with:
-        fpm-version: 'v0.3.0'
+        environment-file: config/ci/${{ matrix.build }}-env.yaml
 
-    - name: Compile
+    - name: Compile (fpm)
+      if: ${{ matrix.build == 'fpm' }}
       run: fpm build --profile release
 
-    - name: Run test
+    - name: Run test (fpm)
+      if: ${{ matrix.build == 'fpm' }}
       run: fpm test
 
-    - name: Run examples
+    - name: Run examples (fpm)
+      if: ${{ matrix.build == 'fpm' }}
       run: fpm run --example --all
 
-  Docs:
-    runs-on: ${{ matrix.os }}
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [ubuntu-latest]
-        gcc_v: [9] # Version of GFortran we want to use.
-        python-version: [3.7]
-    env:
-      FC: gfortran-${{ matrix.gcc_v }}
-      GCC_V: ${{ matrix.gcc_v }}
+    - name: Setup build (meson)
+      if: ${{ matrix.build == 'meson' }}
+      run: >-
+        meson setup _build
+        --prefix=${{ contains(matrix.os, 'windows') && '$pwd\_dist' || '$PWD/_dist' }}
+
+    - name: Compile project (meson)
+      if: ${{ matrix.build == 'meson' }}
+      run: meson compile -C _build
 
+    - name: Run testsuite (meson)
+      if: ${{ matrix.build == 'meson' }}
+      run: meson test -C _build --no-rebuild --print-errorlogs
+
+    - name: Install project (meson)
+      if: ${{ matrix.build == 'meson' }}
+      run: meson install -C _build --no-rebuild
+
+  Docs:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        shell: bash -l {0}
     steps:
     - id: deploy-on-push
       run:
@@ -77,30 +101,10 @@ jobs:
       with:
         submodules: recursive
 
-    - name: Set up Python 3.x
-      uses: actions/setup-python@v1 # Use pip to install latest CMake, & FORD/Jin2For, etc.
+    - name: Install dependencies
+      uses: mamba-org/provision-with-micromamba@main
       with:
-        python-version: ${{ matrix.python-version }}
-
-    - name: Setup Graphviz
-      uses: ts-graphviz/setup-graphviz@v1
-
-    - name: Install Python dependencies
-      if: ${{ contains( matrix.os, 'ubuntu') }}
-      run: |
-        python -m pip install --upgrade pip
-        pip install numpy matplotlib ford
-        if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
-
-    - name: Install GFortran Linux
-      if: ${{ contains( matrix.os, 'ubuntu') }}
-      run: |
-        sudo add-apt-repository ppa:ubuntu-toolchain-r/test
-        sudo apt-get update
-        sudo apt-get install -y gcc-${GCC_V} gfortran-${GCC_V}
-        sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-${GCC_V} 100 \
-        --slave /usr/bin/gfortran gfortran /usr/bin/gfortran-${GCC_V} \
-        --slave /usr/bingcov gcov /usr/bin/gcov-${GCC_V}
+        environment-file: config/ci/docs-env.yaml
 
     - name: Build documentation
       run: ford ./minpack.md
diff --git a/config/ci/docs-env.yaml b/config/ci/docs-env.yaml
new file mode 100644
index 0000000..2bd7c5d
--- /dev/null
+++ b/config/ci/docs-env.yaml
@@ -0,0 +1,10 @@
+name: docs
+channels:
+  - conda-forge
+dependencies:
+  - python
+  - numpy
+  - matplotlib-base
+  - ford
+  - graphviz
+  - gfortran
diff --git a/config/ci/fpm-env.yaml b/config/ci/fpm-env.yaml
new file mode 100644
index 0000000..44a2dab
--- /dev/null
+++ b/config/ci/fpm-env.yaml
@@ -0,0 +1,5 @@
+name: devel
+channels:
+  - conda-forge
+dependencies:
+  - fpm
diff --git a/config/ci/meson-env.yaml b/config/ci/meson-env.yaml
new file mode 100644
index 0000000..dbcf7fb
--- /dev/null
+++ b/config/ci/meson-env.yaml
@@ -0,0 +1,6 @@
+name: devel
+channels:
+  - conda-forge
+dependencies:
+  - meson
+  - ninja
diff --git a/config/install-mod.py b/config/install-mod.py
new file mode 100644
index 0000000..f638c48
--- /dev/null
+++ b/config/install-mod.py
@@ -0,0 +1,30 @@
+#!/usr/bin/env python
+
+from os import environ, listdir, makedirs
+from os.path import join, isdir, exists
+from sys import argv
+from shutil import copy
+
+build_dir = environ["MESON_BUILD_ROOT"]
+if "MESON_INSTALL_DESTDIR_PREFIX" in environ:
+    install_dir = environ["MESON_INSTALL_DESTDIR_PREFIX"]
+else:
+    install_dir = environ["MESON_INSTALL_PREFIX"]
+
+include_dir = argv[1] if len(argv) > 1 else "include"
+module_dir = join(install_dir, include_dir)
+
+modules = []
+for d in listdir(build_dir):
+    bd = join(build_dir, d)
+    if isdir(bd):
+        for f in listdir(bd):
+            if f.endswith(".mod"):
+                modules.append(join(bd, f))
+
+if not exists(module_dir):
+    makedirs(module_dir)
+
+for mod in modules:
+    print("Installing", mod, "to", module_dir)
+    copy(mod, module_dir)
diff --git a/examples/meson.build b/examples/meson.build
new file mode 100644
index 0000000..a2ef8ca
--- /dev/null
+++ b/examples/meson.build
@@ -0,0 +1,19 @@
+tests = [
+  'hybrd',
+  'hybrd1',
+  'lmder1',
+  'lmdif1',
+  'primes',
+]
+
+foreach t : tests
+  test(
+    t,
+    executable(
+      'example-@0@'.format(t),
+      sources: files('example_@0@.f90'.format(t.underscorify())),
+      dependencies: minpack_dep,
+    ),
+    suite: 'example',
+  )
+endforeach
diff --git a/meson.build b/meson.build
new file mode 100644
index 0000000..52a600d
--- /dev/null
+++ b/meson.build
@@ -0,0 +1,61 @@
+project(
+  'minpack',
+  'fortran',
+  version: '2.0.0',
+  meson_version: '>=0.55',
+  default_options: [
+    'default_library=both',
+    'buildtype=debugoptimized',
+  ],
+)
+
+minpack_lib = library(
+  meson.project_name(),
+  sources: files(
+    'src/minpack.f90',
+    'src/minpack_capi.f90',
+  ),
+  install: true,
+)
+
+minpack_inc = minpack_lib.private_dir_include()
+minpack_dep = declare_dependency(
+  link_with: minpack_lib,
+  include_directories: [minpack_inc, include_directories('include')],
+)
+
+minpack_lic = files(
+  'LICENSE.txt',
+)
+
+minpack_header = files(
+  'include/minpack.h',
+)
+
+install_data(
+  minpack_lic,
+  install_dir: get_option('datadir')/'licenses'/meson.project_name()
+)
+
+install_headers(
+  minpack_header,
+)
+
+module_id = meson.project_name()
+meson.add_install_script(
+  find_program(files('config'/'install-mod.py')),
+  get_option('includedir') / module_id,
+)
+
+pkg = import('pkgconfig')
+pkg.generate(
+  minpack_lib,
+  description: 'Solver for nonlinear equations and least squares problems',
+  subdirs: ['', module_id],
+)
+
+# add examples
+subdir('examples')
+
+# add the testsuite
+subdir('test')
diff --git a/test/meson.build b/test/meson.build
new file mode 100644
index 0000000..6279d4b
--- /dev/null
+++ b/test/meson.build
@@ -0,0 +1,32 @@
+tests = [
+  'chkder',
+  'hybrd',
+  'hybrj',
+  'lmder',
+  'lmdif',
+  'lmstr',
+]
+
+foreach t : tests
+  test(
+    t,
+    executable(
+      'test-@0@'.format(t),
+      sources: files('test_@0@.f90'.format(t.underscorify())),
+      dependencies: minpack_dep,
+    ),
+    suite: 'unit',
+  )
+endforeach
+
+if add_languages('c', required: false, native: false)
+  test(
+    'c-api',
+    executable(
+      'c-tester',
+      sources: files('api/tester.c'),
+      dependencies: minpack_dep,
+    ),
+    suite: 'api',
+  )
+endif