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### Running command:
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###   /Library/Frameworks/R.framework/Resources/bin/R CMD INSTALL CGEN
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* installing to library ‘/Library/Frameworks/R.framework/Versions/4.5-arm64/Resources/library’
* installing *source* package ‘CGEN’ ...
** this is package ‘CGEN’ version ‘3.45.0’
** using staged installation
** libs
using C compiler: ‘Apple clang version 15.0.0 (clang-1500.1.0.2.5)’
using Fortran compiler: ‘GNU Fortran (GCC) 14.2.0’
using SDK: ‘MacOSX11.3.sdk’
clang -arch arm64 -std=gnu2x -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG   -I/opt/R/arm64/include    -fPIC  -falign-functions=64 -Wall -g -O2  -c Additive.c -o Additive.o
Additive.c:103:21: error: unknown type name 'vec'
static void vecinit(vec, n, c)
                    ^
Additive.c:103:26: error: unknown type name 'n'
static void vecinit(vec, n, c)
                         ^
Additive.c:103:29: error: unknown type name 'c'
static void vecinit(vec, n, c)
                            ^
Additive.c:103:31: error: expected ';' after top level declarator
static void vecinit(vec, n, c)
                              ^
                              ;
Additive.c:107:1: error: expected identifier or '('
{
^
Additive.c:115:21: error: unknown type name 'invec'
static void vecmove(invec, n, outvec)
                    ^
Additive.c:115:28: error: unknown type name 'n'
static void vecmove(invec, n, outvec)
                           ^
Additive.c:115:31: error: unknown type name 'outvec'
static void vecmove(invec, n, outvec)
                              ^
Additive.c:115:38: error: expected ';' after top level declarator
static void vecmove(invec, n, outvec)
                                     ^
                                     ;
Additive.c:119:1: error: expected identifier or '('
{
^
Additive.c:130:24: error: unknown type name 'invec'
static void vecMultCon(invec, n, c, ret)
                       ^
Additive.c:130:31: error: unknown type name 'n'
static void vecMultCon(invec, n, c, ret)
                              ^
Additive.c:130:34: error: unknown type name 'c'
static void vecMultCon(invec, n, c, ret)
                                 ^
Additive.c:130:37: error: unknown type name 'ret'
static void vecMultCon(invec, n, c, ret)
                                    ^
Additive.c:130:41: error: expected ';' after top level declarator
static void vecMultCon(invec, n, c, ret)
                                        ^
                                        ;
Additive.c:135:1: error: expected identifier or '('
{  
^
Additive.c:144:26: error: unknown type name 'mat'
static void rMatMMultVec(mat, nrow, ncol, vec, ret)
                         ^
Additive.c:144:31: error: unknown type name 'nrow'
static void rMatMMultVec(mat, nrow, ncol, vec, ret)
                              ^
Additive.c:144:37: error: unknown type name 'ncol'
static void rMatMMultVec(mat, nrow, ncol, vec, ret)
                                    ^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
20 errors generated.
make: *** [Additive.o] Error 1
ERROR: compilation failed for package ‘CGEN’
* removing ‘/Library/Frameworks/R.framework/Versions/4.5-arm64/Resources/library/CGEN’