gnu: Add libigl.

* gnu/packages/engineering.scm (libigl): New variable.

Signed-off-by: Liliana Marie Prikler <liliana.prikler@gmail.com>

1 files changed, 145 insertions, 0 deletions

diff --git a/gnu/packages/engineering.scm b/gnu/packages/engineering.scm
index 46622f3a1f..b15259421a 100644
--- a/gnu/packages/engineering.scm
+++ b/gnu/packages/engineering.scm
@@ -2863,3 +2863,148 @@ for hooking Linux system calls in user space.  This is achieved by
 hot-patching the machine code of the standard C library in the memory of
 a process.")
       (license license:bsd-2))))
+
+(define-public libigl
+  (package
+    (name "libigl")
+    (version "2.3.0")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/libigl/libigl")
+             (commit (string-append "v" version))))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32
+         "004a22ifq2vibgkgvrlyihqimpsfizvq5l448204kwfg3lkycajj"))))
+    (build-system cmake-build-system)
+    (arguments
+     `(#:configure-flags
+       '("-DLIBIGL_USE_STATIC_LIBRARY=OFF"
+         "-DLIBIGL_BUILD_TESTS=ON"
+         "-DLIBIGL_BUILD_TUTORIALS=OFF"
+         "-DLIBIGL_EXPORT_TARGETS=ON"
+         ;; The following options disable tests for the corresponding libraries.
+         ;; The options do not affect whether the libraries are linked to
+         ;; libigl or not, they are used for tests.
+         "-DLIBIGL_WITH_COMISO=OFF"
+         "-DLIBIGL_WITH_CORK=OFF"
+         "-DLIBIGL_WITH_MATLAB=OFF"
+         "-DLIBIGL_WITH_MOSEK=OFF"
+         "-DLIBIGL_WITH_TRIANGLE=OFF" ;; Undefined reference to "triangulate".
+         "-DLIBIGL_WITH_OPENGL_GLFW_IMGUI=OFF")
+       #:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'unpack-external
+           (lambda _
+             (setenv "HOME" (getcwd)) ;; cmake needs this to export modules
+             (mkdir "external")
+             (copy-recursively (assoc-ref %build-inputs "libigl-glad") "external/glad")
+             (copy-recursively (assoc-ref %build-inputs "libigl-stb") "external/stb")
+             (copy-recursively (assoc-ref %build-inputs "libigl-tetgen") "external/tetgen")
+             (copy-recursively (assoc-ref %build-inputs "libigl-predicates") "external/predicates")))
+         (add-after 'unpack-external 'patch-cmake
+           (lambda _
+             ;; Fix references to external libraries
+             (substitute* "cmake/libigl.cmake"
+               (("if\\(NOT TARGET Eigen3::Eigen\\)" all)
+                (string-append "find_package(Eigen3 CONFIG REQUIRED)\n" all))
+               (("if\\(NOT TARGET CGAL::CGAL\\)" all)
+                (string-append "find_package(CGAL CONFIG COMPONENTS Core)\n" all))
+               (("if\\(NOT TARGET tinyxml2\\)" all)
+                (string-append "find_package(tinyxml2 CONFIG REQUIRED)\n"
+                               "if (NOT TARGET tinyxml2::tinyxml2)"))
+               (("if\\(NOT TARGET embree\\)" all)
+                (string-append "find_package(embree 3 CONFIG REQUIRED)\n" all))
+               (("if\\(NOT TARGET glfw\\)" all)
+                (string-append "find_package(glfw3 CONFIG REQUIRED)\n" all))
+               (("igl_download_glad\\(\\)" all) "")
+               (("igl_download_stb\\(\\)" all) "")
+               (("igl_download_tetgen\\(\\)" all) "")
+               (("igl_download_triangle\\(\\)" all) "")
+               (("igl_download_predicates\\(\\)" all) ""))
+             (substitute* "tests/CMakeLists.txt"
+               (("igl_download_test_data\\(\\)") "")
+               (("set\\(IGL_TEST_DATA.*")
+                (format #f "set(IGL_TEST_DATA ~a)\n"
+                        (assoc-ref %build-inputs "libigl-test-data")))
+               (("igl_download_catch2\\(\\)") "find_package(Catch2 CONFIG REQUIRED)")
+               (("list\\(APPEND CMAKE_MODULE_PATH \\$\\{LIBIGL_EXTERNAL\\}/catch2/contrib\\)")
+                "")
+               (("add_subdirectory\\(\\$\\{LIBIGL_EXTERNAL\\}/catch2 catch2\\)") ""))
+             ;; Install otherwise missing headers
+             (substitute* "cmake/libigl.cmake"
+               (("install_dir_files\\(copyleft\\)" all)
+                (string-join (list all
+                                   "install_dir_files(copyleft/cgal)"
+                                   "install_dir_files(copyleft/opengl)"
+                                   "install_dir_files(copyleft/tetgen)"
+                                   "install_dir_files(embree)"
+                                   "install_dir_files(opengl)"
+                                   "install_dir_files(png)"
+                                   "install_dir_files(predicates)"
+                                   "install_dir_files(xml)")
+                             "\n"))))))))
+    ;; XXX: Inputs are currently only used to build tests.
+    ;;      We would need to patch the CMake recipe to build a shared library
+    ;;      with all of these.
+    (inputs
+     `(("boost" ,boost)
+       ("catch2" ,catch-framework2)
+       ("cgal" ,cgal)
+       ("eigen" ,eigen)
+       ("embree" ,embree)
+       ("glfw" ,glfw)
+       ("gmp" ,gmp)
+       ("mesa" ,mesa)
+       ("mpfr" ,mpfr)
+       ("tinyxml2" ,tinyxml2)
+       ;; When updating this package, update commit fields below according to
+       ;; the hashes listed in "cmake/LibiglDownloadExternal.cmake".
+       ("libigl-test-data"
+        ,(origin
+           (method git-fetch)
+           (uri (git-reference
+                 (url "https://github.com/libigl/libigl-tests-data")
+                 (commit "19cedf96d70702d8b3a83eb27934780c542356fe")))
+           (file-name (git-file-name "libigl-test-data" version))
+           (sha256 (base32 "1wxglrxw74xw4a4jmmjpm8719f3mnlbxbwygjb4ddfixxxyya4i2"))))
+       ("libigl-glad"
+        ,(origin
+           (method git-fetch)
+           (uri (git-reference
+                 (url "https://github.com/libigl/libigl-glad")
+                 (commit "09b4969c56779f7ddf8e6176ec1873184aec890f")))
+           (file-name (git-file-name "libigl-glad" version))
+           (sha256 (base32 "0rwrs7513ylp6gxv7crjzflapcg9p7x04nzfvywgl665vl53rawk"))))
+       ("libigl-stb"
+        ,(origin
+           (method git-fetch)
+           (uri (git-reference
+                 (url "https://github.com/libigl/libigl-stb.git")
+                 (commit "cd0fa3fcd90325c83be4d697b00214e029f94ca3")))
+           (file-name (git-file-name "libigl-stb" version))
+           (sha256 (base32 "0wwlb370z40y63ic3ny6q7lxibhixg2k1pjdkl4ymzv79zld28kj"))))
+       ("libigl-predicates"
+        ,(origin
+           (method git-fetch)
+           (uri (git-reference
+                 (url "https://github.com/libigl/libigl-predicates.git")
+                 (commit "488242fa2b1f98a9c5bd1441297fb4a99a6a9ae4")))
+           (file-name (git-file-name "libigl-predicates" version))
+           (sha256 (base32 "13bd98g8lgcq37i3crj66433z09grnb2xjrcqpwqmyn147rp5wyh"))))
+       ;; TODO: Package tetgen separately from <http://www.tetgen.org>
+       ("libigl-tetgen"
+        ,(origin
+           (method git-fetch)
+           (uri (git-reference
+                 (url "https://github.com/libigl/tetgen.git")
+                 (commit "4f3bfba3997f20aa1f96cfaff604313a8c2c85b6")))
+           (file-name (git-file-name "libigl-tetgen" version))
+           (sha256 (base32 "1k724syssw37py7kwmibk3sfwkkgyjyy7qkijnhn6rjm91g8qxsg"))))))
+    (home-page "https://libigl.github.io/")
+    (synopsis "Simple C++ geometry processing library")
+    (description "This library provides functionality for shape modelling,
+visualization, matrix manipulation.")
+    (license (list license:gpl3 license:mpl2.0))))