make error, gcc: "make[4]: gcc: permission denied" (Arch Linux)

I encountered a rather strange make error when trying to compile some packages. I am running Arch Linux 5.6.7

For instance, when trying to compile R 3.6, I get the following error (full output at the end):

gcc -shared -fopenmp -L/usr/local/lib64 -o libRblas.so blas.o  cmplxblas.o -lgfortran -lm -lquadmathmake[4]: gcc: Permission denied

However gcc is up-to-date, worked for other installs, and everything seems correctly configured:

[cmasso6@cmasso6 R-3.6.3]$ gcc --versiongcc (Arch Linux 9.3.0-1) 9.3.0Copyright (C) 2019 Free Software Foundation, Inc.This is free software; see the source for copying conditions.  There is NOwarranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.[cmasso6@cmasso6 R-3.6.3]$ which gcc/usr/bin/gcc

I took a look at the Makeconf file of the package, which contains the following line: CC=gcc. Changing it to CC=/usr/bin/gcc made it work.

Here is my $PATH:

/usr/lib/aurutils:/usr/lib:/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/bin/site_perl:/usr/bin/vendor_perl:/usr/bin/core_perl

Again, gcc runs correctly from the command line. I don't know what is going on.

To be clear, I made this install work by changing the Makeconf file, and I can also install R 4.0 with pacman without any trouble. However, I get the same error when trying to install some R packages, like ps. So I guess there is a general issue with gcc and/or make.

I have no idea what to do, any help would be greatly appreciated!

The full output of the make error:

[cmasso6@cmasso6 R-3.6.3]$ makemake[1]: Entering directory '/home/cmasso6/Downloads/R-3.6.3/m4'make[1]: Nothing to be done for 'R'.make[1]: Leaving directory '/home/cmasso6/Downloads/R-3.6.3/m4'make[1]: Entering directory '/home/cmasso6/Downloads/R-3.6.3/tools'make[1]: Nothing to be done for 'R'.make[1]: Leaving directory '/home/cmasso6/Downloads/R-3.6.3/tools'make[1]: Entering directory '/home/cmasso6/Downloads/R-3.6.3/doc'make[2]: Entering directory '/home/cmasso6/Downloads/R-3.6.3/doc/html'make[2]: Leaving directory '/home/cmasso6/Downloads/R-3.6.3/doc/html'make[2]: Entering directory '/home/cmasso6/Downloads/R-3.6.3/doc/manual'make[2]: Nothing to be done for 'R'.make[2]: Leaving directory '/home/cmasso6/Downloads/R-3.6.3/doc/manual'make[1]: Leaving directory '/home/cmasso6/Downloads/R-3.6.3/doc'make[1]: Entering directory '/home/cmasso6/Downloads/R-3.6.3/etc'make[1]: Leaving directory '/home/cmasso6/Downloads/R-3.6.3/etc'make[1]: Entering directory '/home/cmasso6/Downloads/R-3.6.3/share'make[1]: Leaving directory '/home/cmasso6/Downloads/R-3.6.3/share'make[1]: Entering directory '/home/cmasso6/Downloads/R-3.6.3/src'make[2]: Entering directory '/home/cmasso6/Downloads/R-3.6.3/src/scripts'creating src/scripts/R.femake[3]: Entering directory '/home/cmasso6/Downloads/R-3.6.3/src/scripts'make[3]: Leaving directory '/home/cmasso6/Downloads/R-3.6.3/src/scripts'make[2]: Leaving directory '/home/cmasso6/Downloads/R-3.6.3/src/scripts'make[2]: Entering directory '/home/cmasso6/Downloads/R-3.6.3/src/include'config.status: creating src/include/config.hconfig.status: src/include/config.h is unchangedmake[3]: Entering directory '/home/cmasso6/Downloads/R-3.6.3/src/include/R_ext'make[3]: Leaving directory '/home/cmasso6/Downloads/R-3.6.3/src/include/R_ext'make[2]: Leaving directory '/home/cmasso6/Downloads/R-3.6.3/src/include'make[2]: Entering directory '/home/cmasso6/Downloads/R-3.6.3/src/extra'make[3]: Entering directory '/home/cmasso6/Downloads/R-3.6.3/src/extra/blas'make[4]: Entering directory '/home/cmasso6/Downloads/R-3.6.3/src/extra/blas'gfortran -fno-optimize-sibling-calls -fpic  -g -O2  -c blas.f -o blas.ogfortran -fno-optimize-sibling-calls -fpic  -g -O2  -c cmplxblas.f -o cmplxblas.ogcc -shared -fopenmp -L/usr/local/lib64 -o libRblas.so blas.o  cmplxblas.o -lgfortran -lm -lquadmathmake[4]: gcc: Permission deniedmake[4]: *** [Makefile:37: libRblas.so] Error 127make[4]: Leaving directory '/home/cmasso6/Downloads/R-3.6.3/src/extra/blas'make[3]: *** [Makefile:32: R] Error 2make[3]: Leaving directory '/home/cmasso6/Downloads/R-3.6.3/src/extra/blas'make[2]: *** [Makefile:35: make.blas] Error 2make[2]: Leaving directory '/home/cmasso6/Downloads/R-3.6.3/src/extra'make[1]: *** [Makefile:28: R] Error 1make[1]: Leaving directory '/home/cmasso6/Downloads/R-3.6.3/src'make: *** [Makefile:61: R] Error 1