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/opt/local/bin/g++-mp-12 -std=gnu++17 -dynamiclib -Wl,-headerpad_max_install_names -undefined dynamic_lookup -single_module -multiply_defined suppress -L/opt/local/Library/Frameworks/R.framework/Resources/lib -Wl,-headerpad_max_install_names -Wl,-rpath,/opt/local/lib/libgcc -L/opt/local/lib -lMacportsLegacySupport -arch ppc -o PolygonSoup.so RcppExports.o ReadWrite.o mesh.o unexported1.o unexported2.o -L/opt/local/lib -lgmp -lmpfr -lgmp -F/opt/local/Library/Frameworks/R.framework/.. -framework R -Wl,-framework -Wl,CoreFoundation
installing to /opt/local/var/macports/build/_opt_PPCRosettaPorts_R_R-PolygonSoup/R-PolygonSoup/work/destroot/opt/local/Library/Frameworks/R.framework/Versions/4.2/Resources/library/00LOCK-PolygonSoup/00new/PolygonSoup/libs
** R
** data
*** moving datasets to lazyload DB
** inst
** byte-compile and prepare package for lazy loading
** help
*** installing help indices
** building package indices
** testing if installed package can be loaded from temporary location
Error: package or namespace load failed for ‘PolygonSoup’ in dyn.load(file, DLLpath = DLLpath, ...):
 unable to load shared object '/opt/local/var/macports/build/_opt_PPCRosettaPorts_R_R-PolygonSoup/R-PolygonSoup/work/destroot/opt/local/Library/Frameworks/R.framework/Versions/4.2/Resources/library/00LOCK-PolygonSoup/00new/PolygonSoup/libs/PolygonSoup.so':
  dlopen(/opt/local/var/macports/build/_opt_PPCRosettaPorts_R_R-PolygonSoup/R-PolygonSoup/work/destroot/opt/local/Library/Frameworks/R.framework/Versions/4.2/Resources/library/00LOCK-PolygonSoup/00new/PolygonSoup/libs/PolygonSoup.so, 6): Symbol not found: ___atomic_load_8
  Referenced from: /opt/local/var/macports/build/_opt_PPCRosettaPorts_R_R-PolygonSoup/R-PolygonSoup/work/destroot/opt/local/Library/Frameworks/R.framework/Versions/4.2/Resources/library/00LOCK-PolygonSoup/00new/PolygonSoup/libs/PolygonSoup.so
  Expected in: dynamic lookup

Error: loading failed
Execution halted
ERROR: loading failed

rm(list=ls())
library(PolygonSoup)

my.mesh <- list()
my.mesh$vertices <-rbind(c(1,1,0),c(1,-1,0),c(-1,-1,0),c(-1,1,0))
my.mesh$faces <- matrix(c(1,2,3,4), ncol=4)
writeMeshFile(mesh = my.mesh, filename = 'my_mesh.obj')

# file written from a CGAL tool in Wavefront obj format
# 4 vertices
# 0 halfedges
# 1 facets


# 4 vertices
# ------------------------------------------

v 1 1 0
v 1 -1 0
v -1 -1 0
v -1 1 0

# 1 facets
# ------------------------------------------

f  0 1 2 3

# End of Wavefront obj format #