Add recipe for squadgen

recipes/squadgen/0001-remove-png-h.patch

@@ -0,0 +1,20 @@
+diff -ruN squadgen-1.2.1/src/SQuadGen.cpp squadgen-1.2.1-patch/src/SQuadGen.cpp
+--- squadgen-1.2.1/src/SQuadGen.cpp	2024-05-11 15:31:02.000000000 -0600
++++ squadgen-1.2.1-patch/src/SQuadGen.cpp	2024-05-12 11:20:44.022644614 -0600
+@@ -14,7 +14,6 @@
+ ///		or implied warranty.
+ ///	</remarks>
+
+-#include <png.h>
+ #include "netcdfcpp.h"
+
+ #include <string>
+@@ -195,7 +194,7 @@
+ 	if ((nRefinementLevel > 0) &&
+ 		((strRefineRect != "") || (strRefineFile != "") || (fLoadCSRefinementMap))
+ 	) {
+-		int nCommandLineCount = 
++		int nCommandLineCount =
+ 			  ((strRefineRect != "")?(1):(0))
+ 			+ ((strRefineFile != "")?(1):(0))
+ 			+ (fLoadCSRefinementMap?(1):(0));

recipes/squadgen/CMakeLists.txt

@@ -0,0 +1,39 @@
+cmake_minimum_required(VERSION 3.18)
+project(
+   squadgen
+   VERSION $ENV{PKG_VERSION}
+   LANGUAGES C CXX)
+
+list(APPEND CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake)
+
+include("${CMAKE_SOURCE_DIR}/cmake_macros/gnu.cmake")
+
+find_package(NETCDF REQUIRED)
+
+message(STATUS "netcdf_c_incdir=${netcdf_c_incdir}")
+message(STATUS "netcdf_c_libs=${netcdf_c_libs}")
+
+SET(SRC ${CMAKE_SOURCE_DIR}/src)
+set(SQUADGEN_SRC ${SRC}/SQuadGen.cpp
+                 ${SRC}/GridElements.cpp
+                 ${SRC}/CSRefinementMap.cpp
+                 ${SRC}/CubedSphereGrid.cpp
+                 ${SRC}/IcosahedralFlagGrid.cpp
+                 ${SRC}/RefineGrid.cpp
+                 ${SRC}/RefinementTemplateCUBIT.cpp
+                 ${SRC}/RefinementTemplateLOWCONN.cpp
+                 ${SRC}/RefinementTemplateLOWCONNOLD.cpp
+                 ${SRC}/SpringDynamics.cpp
+                 ${SRC}/MeshUtilities.cpp
+                 ${SRC}/Tessellate.cpp
+                 ${SRC}/lodepng.cpp
+                 ${SRC}/netcdf.cpp
+                 ${SRC}/ncvalues.cpp)
+
+include_directories(${netcdf_c_incdir})
+
+include_directories(${SRC})
+add_executable(SQuadGen ${SQUADGEN_SRC})
+target_link_libraries(SQuadGen ${netcdf_c_libs})
+
+install(TARGETS SQuadGen DESTINATION bin)

recipes/squadgen/build.sh

@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+
+set -x
+set -e
+
+cp -r ${RECIPE_DIR}/cmake ${RECIPE_DIR}/cmake_macros ${RECIPE_DIR}/CMakeLists.txt .
+
+# remove static libpng and zlib to prevent static linking
+rm -rf ${PREFIX}/lib/libpng.a ${PREFIX}/lib/libz.a
+
+rm -rf build
+mkdir build
+cd build
+cmake \
+  -D CMAKE_INSTALL_PREFIX="${PREFIX}" \
+  -D NETCDF_PATH="${PREFIX}" \
+  -D CMAKE_BUILD_TYPE=Release \
+  -D BUILD_SHARED_LIBS=ON \
+  ..
+cmake --build .
+cmake --install .

recipes/squadgen/cmake/FindNETCDF.cmake

@@ -0,0 +1,57 @@
+# - Try to find Netcdf
+
+function(get_netcdf_libs ncpath)
+
+  set(ncconfig ${ncpath}/bin/nc-config)
+
+  # Get C libs
+  if (EXISTS ${ncconfig})
+    execute_process(COMMAND ${ncconfig} --libs OUTPUT_VARIABLE nclibs OUTPUT_STRIP_TRAILING_WHITESPACE)
+  endif()
+
+  # Fall back to find_library
+  if (NOT nclibs)
+    find_library(nclibs_temp netcdf REQUIRED HINTS ${ncpath}/lib ${ncpath}/lib64)
+    set(nclibs ${nclibs_temp})
+  endif()
+
+
+  set(netcdf_c_libs ${nclibs} PARENT_SCOPE)
+endfunction()
+
+function(create_netcdf_target)
+
+  # Grab things from env
+  set(NETCDF_PATH         $ENV{NETCDF_PATH})
+  set(NETCDF_C_PATH       $ENV{NETCDF_C_PATH})
+
+  if (NETCDF_C_PATH)
+    # Sanity checks
+    if (NOT EXISTS ${NETCDF_C_PATH}/lib AND NOT EXISTS ${NETCDF_C_PATH}/lib64)
+      message(FATAL_ERROR "NETCDF_C_PATH does not contain a lib or lib64 directory")
+    endif ()
+
+    get_netcdf_libs(${NETCDF_C_PATH})
+    find_path (netcdf_c_incdir netcdf.h REQUIRED HINTS ${NETCDF_C_PATH}/include)
+
+  elseif (NETCDF_FORTRAN_PATH)
+    message(FATAL_ERROR "NETCDF_FORTRAN_PATH specified without NETCDF_C_PATH")
+
+  elseif (NETCDF_PATH)
+    # Sanity checks
+    if (NOT EXISTS ${NETCDF_PATH}/lib AND NOT EXISTS ${NETCDF_PATH}/lib64)
+      message(FATAL_ERROR "NETCDF_PATH does not contain a lib or lib64 directory")
+    endif ()
+
+    get_netcdf_libs(${NETCDF_PATH})
+    find_path(netcdf_c_incdir netcdf.h REQUIRED HINTS ${NETCDF_PATH}/include)
+
+  else()
+    message(FATAL_ERROR "NETCDF not found: Define NETCDF_PATH or NETCDF_C_PATH")
+  endif()
+
+  set(netcdf_c_incdir ${netcdf_c_incdir})
+  set(netcdf_c_libs ${netcdf_c_libs} PARENT_SCOPE)
+  endfunction()
+
+create_netcdf_target()

recipes/squadgen/cmake_macros/gnu.cmake

@@ -0,0 +1,6 @@
+string(APPEND CMAKE_Fortran_FLAGS " -fconvert=big-endian -ffree-line-length-none -ffixed-line-length-none")
+if (CMAKE_Fortran_COMPILER_VERSION VERSION_GREATER_EQUAL 10)
+   string(APPEND CMAKE_Fortran_FLAGS " -fallow-argument-mismatch")
+endif()
+string(APPEND CMAKE_Fortran_FORMAT_FIXED_FLAG " -ffixed-form")
+string(APPEND CMAKE_Fortran_FORMAT_FREE_FLAG " -ffree-form")

recipes/squadgen/meta.yaml

@@ -0,0 +1,53 @@
+{% set name = "squadgen" %}
+{% set version = "1.2.1" %}
+
+package:
+  name: {{ name|lower }}
+  version: {{ version }}
+
+source:
+  url: https://github.com/ClimateGlobalChange/squadgen/archive/refs/tags/v{{ version }}.tar.gz
+  sha256: a39f9f467563e796c1b0a53c7bf7d046f50110a030d92350754a60ada4eda053
+  patches:
+    - 0001-remove-png-h.patch
+
+build:
+  skip: true  # [not linux]
+  number: 0
+
+requirements:
+  build:
+    - {{ compiler('c') }}
+    - {{ compiler('cxx') }}
+    - {{ stdlib("c") }}
+    - cmake
+    - make
+  host:
+    - libnetcdf
+    - libnetcdf * nompi_*
+
+test:
+  files:
+    - test/grid.png
+  commands:
+    - >
+      SQuadGen --refine_file test/grid.png --refine_level 5
+      --refine_type LOWCONN --resolution 30 --smooth_type SPRING
+      --smooth_dist 3 --smooth_iter 20 --output grid.g
+    - test -f "grid.g"
+
+about:
+  home: https://github.com/ClimateGlobalChange/squadgen
+  license: GPL-2.0-or-later and NetCDF and Zlib
+  license_family: GPL
+  license_file:
+    - LICENSE.md
+    - src/netcdf-cxx-4.2.COPYRIGHT
+    - src/lodepng.h
+  summary: Spherical Quadrilateral Mesh Generator (SQuadGen)
+  doc_url: https://github.com/ClimateGlobalChange/squadgen/blob/master/README.md
+  dev_url: https://github.com/ClimateGlobalChange/squadgen
+
+extra:
+  recipe-maintainers:
+    - xylar