Hi there!
I need help for this install error of Sage 8.1.
It seems that the culprit is "libcurl >= 7.22.0 library not found by the compiler".
Xcode 9.2 installed along with its command line tools version 9.2 for MacOS 10.13.2.
Best wishes!
S.Diop
Last lines of the build log
[r-3.4.2.p0] checking for curl-config... /Users/seet/anaconda3/bin/curl-config
[r-3.4.2.p0] checking libcurl version ... 7.55.1
[r-3.4.2.p0] checking curl/curl.h usability... yes
[r-3.4.2.p0] checking curl/curl.h presence... yes
[r-3.4.2.p0] checking for curl/curl.h... yes
[r-3.4.2.p0] checking if libcurl is version 7 and >= 7.22.0... no
[r-3.4.2.p0] configure: error: libcurl >= 7.22.0 library and headers are required
[r-3.4.2.p0] Error configuring R.
[r-3.4.2.p0]
[r-3.4.2.p0] real 2m17.145s
[r-3.4.2.p0] user 1m3.079s
[r-3.4.2.p0] sys 1m5.324s
[r-3.4.2.p0] ************************************************************************
[r-3.4.2.p0] Error installing package r-3.4.2.p0
[r-3.4.2.p0] ************************************************************************
[r-3.4.2.p0] explaining the problem and including the log file
[r-3.4.2.p0] /Applications/sage-8.1/logs/pkgs/r-3.4.2.p0.log
[r-3.4.2.p0] Describe your computer, operating system, etc.
[r-3.4.2.p0] If you want to try to fix the problem yourself, *don't* just cd to
[r-3.4.2.p0] /Applications/sage-8.1/local/var/tmp/sage/build/r-3.4.2.p0 and type 'make' or whatever is appropriate.
[r-3.4.2.p0] Instead, the following commands setup all environment variables
[r-3.4.2.p0] correctly and load a subshell for you to debug the error:
[r-3.4.2.p0] (cd '/Applications/sage-8.1/local/var/tmp/sage/build/r-3.4.2.p0' && '/Applications/sage-8.1/sage' --sh)
[r-3.4.2.p0] When you are done debugging, you can type "exit" to leave the subshell.
[r-3.4.2.p0] ************************************************************************
make[2]: *** [/Applications/sage-8.1/local/var/lib/sage/installed/r-3.4.2.p0] Error 1
make[1]: *** [all] Error 2
real 799m19.276s
user 738m19.226s
sys 127m14.122s
***************************************************************
Error building Sage.
The following package(s) may have failed to build (not necessarily
during this run of 'make all'):
* package: r-3.4.2.p0
log file: /Applications/sage-8.1/logs/pkgs/r-3.4.2.p0.log
build directory: /Applications/sage-8.1/local/var/tmp/sage/build/r-3.4.2.p0
The build directory may contain configuration files and other potentially
helpful information. WARNING: if you now run 'make' again, the build
directory will, by default, be deleted. Set the environment variable
SAGE_KEEP_BUILT_SPKGS to 'yes' to prevent this.
make: *** [all] Error 1