Add r-fastmap (#1309)

Co-authored-by: Thorsten Beier <[email protected]>

recipes/recipes_emscripten/r-fastmap/build.sh

@@ -0,0 +1,9 @@
+#!/bin/bash
+
+set -e
+
+echo "R_HOME=\$(PREFIX)/lib/R" > $BUILD_PREFIX/lib/R/etc/Makeconf
+cat $PREFIX/lib/R/etc/Makeconf >> $BUILD_PREFIX/lib/R/etc/Makeconf
+
+$BUILD_PREFIX/bin/R CMD INSTALL . \
+    --no-test-load --no-byte-compile --library=$PREFIX/lib/R/library

recipes/recipes_emscripten/r-fastmap/recipe.yaml

@@ -0,0 +1,46 @@
+context:
+  name: r-fastmap
+  version: 1.2.0
+  r_base_version: 4.4.1
+
+package:
+  name: ${{ name }}
+  version: ${{ version }}
+
+source:
+  url: https://cran.r-project.org//src/contrib/${{ name[2:] }}_${{ version }}.tar.gz
+  sha256: b1da04a2915d1d057f3c2525e295ef15016a64e6667eac83a14641bbd83b9246
+
+build:
+  number: 0
+
+requirements:
+  build:
+    - r-base == ${{ r_base_version }}
+    - ${{ compiler('c') }}
+    - ${{ compiler('cxx') }}
+  host:
+    - r-base == ${{ r_base_version }}
+  run:
+    - r-base == ${{ r_base_version }}
+
+tests:
+- package_contents:
+    lib:
+    - R/library/${{ name[2:] }}/libs/${{ name[2:] }}.so
+
+about:
+  homepage: https://r-lib.github.io/fastmap/
+  repository: https://github.com/r-lib/fastmap
+  license: MIT
+  license_family: MIT
+  summary: |
+    Fast implementation of a key-value store. Environments are commonly used as
+    key-value stores, but every time a new key is used, it is added to R's
+    global symbol table, causing a small amount of memory leakage. This can be
+    problematic in cases where many different keys are used. Fastmap avoids this
+    memory leak issue by implementing the map using data structures in C++.
+
+extra:
+  recipe-maintainers:
+  - IsabelParedes