configure:42569: checking for curl-config
configure:42587: found /anaconda3/bin/curl-config
configure:42599: result: /anaconda3/bin/curl-config
configure:42625: checking curl/curl.h usability
configure:42625: clang -c  -g -O2  -fPIC -I/anaconda3/include -I/usr/local/Cellar/pcre2/10.32/include   conftest.c >&5
configure:42625: $? = 0
configure:42625: result: yes
configure:42625: checking curl/curl.h presence
configure:42625: clang -E -I/anaconda3/include -I/usr/local/Cellar/pcre2/10.32/include   conftest.c
configure:42625: $? = 0
configure:42625: result: yes
configure:42625: checking for curl/curl.h
configure:42625: result: yes
configure:42639: checking if libcurl is version 7 and >= 7.22.0
configure:42668: clang -o conftest  -g -O2  -fPIC -I/anaconda3/include -I/usr/local/Cellar/pcre2/10.32/include   -L/Users/mkoeppe/s/sage/sage-rebasing/worktree-anaconda/local
/lib -Wl,-rpath,/Users/mkoeppe/s/sage/sage-rebasing/worktree-anaconda/local/lib  conftest.c -L/anaconda3/lib -lcurl -lssh2 -lssh2 -lssl -lcrypto -lssl -lcrypto -lgssapi_krb5 
-lresolv -lz -L/usr/local/Cellar/pcre2/10.32/lib -lpcre2-8 -lpcre -llzma -lbz2 -lz -licucore -ldl -lm  -liconv >&5
configure:42668: $? = 0
configure:42668: ./conftest
dyld: Library not loaded: @rpath/libcurl.4.dylib
  Referenced from: /Users/mkoeppe/s/sage/sage-rebasing/worktree-anaconda/local/var/tmp/sage/build/r-3.6.0/src/./conftest
  Reason: image not found
./configure: line 2254: 38949 Abort trap: 6           ./conftest$ac_exeext
configure:42668: $? = 134
configure: program exited with status 134