# Issue about installing Jekyll **URL:** \ **Category:** Help\ **Created:** [May 31, 2020, 11:13am UTC](https://talk.jekyllrb.com/t/issue-about-installing-jekyll/4502 "2020-05-31T11:13:29Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![CYLiu2019](https://yyz2.discourse-cdn.com/flex030/user_avatar/talk.jekyllrb.com/cyliu2019/32/3043_2.png) [@CYLiu2019](https://talk.jekyllrb.com/u/CYLiu2019)\ **Post date:** [May 31, 2020, 11:13am UTC](https://talk.jekyllrb.com/t/issue-about-installing-jekyll/4502/1 "2020-05-31T11:13:29Z")
I tried to install Jekyll, but I failed. My computer is MAC Catanila ver 10.15.3 > Successfully installed bundler-2.1.4 > Parsing documentation for bundler-2.1.4 > Done installing documentation for bundler after 2 seconds > Building native extensions. This could take a while… > ERROR: Error installing jekyll: > ERROR: Failed to build gem native extension. > > ``` > current directory: /Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi_c > > ``` > > /usr/local/opt/ruby/bin/ruby -I /usr/local/Cellar/ruby/2.7.1\_2/lib/ruby/2.7.0 -r ./siteconf20200531-32508-gy5zjy.rb extconf.rb > checking for ffi.h… no > checking for ffi.h in /usr/local/include,/usr/include/ffi… no > checking for shlwapi.h… no > checking for rb\_thread\_call\_without\_gvl()… yes > checking for ruby\_native\_thread\_p()… yes > checking for ruby\_thread\_has\_gvl\_p()… yes > creating extconf.h > creating Makefile > > current directory: /Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c > make “DESTDIR=” clean > > current directory: /Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c > make “DESTDIR=” > Configuring libffi > clang-4.0: error: unsupported option ‘-print-multi-os-directory’ > clang-4.0: error: no input files > cd “/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi-x86\_64-darwin19” && make > make[1]: Entering directory ‘/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi-x86\_64-darwin19’ > make all-recursive > make[2]: Entering directory ‘/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi-x86\_64-darwin19’ > Making all in include > make[3]: Entering directory ‘/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi-x86\_64-darwin19/include’ > make[3]: Nothing to be done for ‘all’. > make[3]: Leaving directory ‘/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi-x86\_64-darwin19/include’ > Making all in testsuite > make[3]: Entering directory ‘/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi-x86\_64-darwin19/testsuite’ > make[3]: Nothing to be done for ‘all’. > make[3]: Leaving directory ‘/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi-x86\_64-darwin19/testsuite’ > Making all in man > make[3]: Entering directory ‘/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi-x86\_64-darwin19/man’ > make[3]: Nothing to be done for ‘all’. > make[3]: Leaving directory ‘/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi-x86\_64-darwin19/man’ > make[3]: Entering directory ‘/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi-x86\_64-darwin19’ > /bin/sh ./libtool --tag=CC --mode=compile clang -DHAVE\_CONFIG\_H -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/include -Iinclude -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src -DRUBY\_EXTCONF\_H="extconf.h" -I/usr/local/opt/libyaml/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/readline/include -D\_XOPEN\_SOURCE -D\_DARWIN\_C\_SOURCE -D\_DARWIN\_UNLIMITED\_SELECT -D\_REENTRANT -Wall -fexceptions -c -o src/prep\_cif.lo /Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src/prep\_cif.c > libtool: compile: clang -DHAVE\_CONFIG\_H -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/include -Iinclude -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src -DRUBY\_EXTCONF\_H="extconf.h" -I/usr/local/opt/libyaml/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/readline/include -D\_XOPEN\_SOURCE -D\_DARWIN\_C\_SOURCE -D\_DARWIN\_UNLIMITED\_SELECT -D\_REENTRANT -Wall -fexceptions -c /Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src/prep\_cif.c -fno-common -DPIC -o src/.libs/prep\_cif.o > /bin/sh ./libtool --tag=CC --mode=compile clang -DHAVE\_CONFIG\_H -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/include -Iinclude -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src -DRUBY\_EXTCONF\_H="extconf.h" -I/usr/local/opt/libyaml/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/readline/include -D\_XOPEN\_SOURCE -D\_DARWIN\_C\_SOURCE -D\_DARWIN\_UNLIMITED\_SELECT -D\_REENTRANT -Wall -fexceptions -c -o src/types.lo /Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src/types.c > libtool: compile: clang -DHAVE\_CONFIG\_H -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/include -Iinclude -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src -DRUBY\_EXTCONF\_H="extconf.h" -I/usr/local/opt/libyaml/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/readline/include -D\_XOPEN\_SOURCE -D\_DARWIN\_C\_SOURCE -D\_DARWIN\_UNLIMITED\_SELECT -D\_REENTRANT -Wall -fexceptions -c /Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src/types.c -fno-common -DPIC -o src/.libs/types.o > /bin/sh ./libtool --tag=CC --mode=compile clang -DHAVE\_CONFIG\_H -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/include -Iinclude -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src -DRUBY\_EXTCONF\_H="extconf.h" -I/usr/local/opt/libyaml/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/readline/include -D\_XOPEN\_SOURCE -D\_DARWIN\_C\_SOURCE -D\_DARWIN\_UNLIMITED\_SELECT -D\_REENTRANT -Wall -fexceptions -c -o src/raw\_api.lo /Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src/raw\_api.c > libtool: compile: clang -DHAVE\_CONFIG\_H -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/include -Iinclude -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src -DRUBY\_EXTCONF\_H="extconf.h" -I/usr/local/opt/libyaml/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/readline/include -D\_XOPEN\_SOURCE -D\_DARWIN\_C\_SOURCE -D\_DARWIN\_UNLIMITED\_SELECT -D\_REENTRANT -Wall -fexceptions -c /Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src/raw\_api.c -fno-common -DPIC -o src/.libs/raw\_api.o > /bin/sh ./libtool --tag=CC --mode=compile clang -DHAVE\_CONFIG\_H -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/include -Iinclude -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src -DRUBY\_EXTCONF\_H="extconf.h" -I/usr/local/opt/libyaml/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/readline/include -D\_XOPEN\_SOURCE -D\_DARWIN\_C\_SOURCE -D\_DARWIN\_UNLIMITED\_SELECT -D\_REENTRANT -Wall -fexceptions -c -o src/java\_raw\_api.lo /Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src/java\_raw\_api.c > libtool: compile: clang -DHAVE\_CONFIG\_H -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/include -Iinclude -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src -DRUBY\_EXTCONF\_H="extconf.h" -I/usr/local/opt/libyaml/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/readline/include -D\_XOPEN\_SOURCE -D\_DARWIN\_C\_SOURCE -D\_DARWIN\_UNLIMITED\_SELECT -D\_REENTRANT -Wall -fexceptions -c /Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src/java\_raw\_api.c -fno-common -DPIC -o src/.libs/java\_raw\_api.o > /Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src/java\_raw\_api.c:328:46: warning: ‘ffi\_java\_raw\_size’ is deprecated [-Wdeprecated-declarations] > ffi\_java\_raw _raw = (ffi\_java\_raw_)alloca (ffi\_java\_raw\_size (cif)); > ^ > /Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src/java\_raw\_api.c:45:1: note: ‘ffi\_java\_raw\_size’ has been explicitly marked deprecated here > ffi\_java\_raw\_size (ffi\_cif \*cif) > ^ > /Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src/java\_raw\_api.c:331:3: warning: ‘ffi\_java\_ptrarray\_to\_raw’ is deprecated [-Wdeprecated-declarations] > ffi\_java\_ptrarray\_to\_raw (cif, avalue, raw); > ^ > /Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src/java\_raw\_api.c:157:1: note: ‘ffi\_java\_ptrarray\_to\_raw’ has been explicitly marked deprecated here > ffi\_java\_ptrarray\_to\_raw (ffi\_cif \*cif, void \*\*args, ffi\_java\_raw \*raw) > ^ > 2 warnings generated. > /bin/sh ./libtool --tag=CC --mode=compile clang -DHAVE\_CONFIG\_H -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/include -Iinclude -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src -DRUBY\_EXTCONF\_H="extconf.h" -I/usr/local/opt/libyaml/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/readline/include -D\_XOPEN\_SOURCE -D\_DARWIN\_C\_SOURCE -D\_DARWIN\_UNLIMITED\_SELECT -D\_REENTRANT -Wall -fexceptions -c -o src/closures.lo /Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src/closures.c > libtool: compile: clang -DHAVE\_CONFIG\_H -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/include -Iinclude -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src -DRUBY\_EXTCONF\_H="extconf.h" -I/usr/local/opt/libyaml/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/readline/include -D\_XOPEN\_SOURCE -D\_DARWIN\_C\_SOURCE -D\_DARWIN\_UNLIMITED\_SELECT -D\_REENTRANT -Wall -fexceptions -c /Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src/closures.c -fno-common -DPIC -o src/.libs/closures.o > /bin/sh ./libtool --tag=CC --mode=compile clang -DHAVE\_CONFIG\_H -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/include -Iinclude -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src -DRUBY\_EXTCONF\_H="extconf.h" -I/usr/local/opt/libyaml/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/readline/include -D\_XOPEN\_SOURCE -D\_DARWIN\_C\_SOURCE -D\_DARWIN\_UNLIMITED\_SELECT -D\_REENTRANT -Wall -fexceptions -c -o src/x86/ffi64.lo /Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src/x86/ffi64.c > libtool: compile: clang -DHAVE\_CONFIG\_H -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/include -Iinclude -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src -DRUBY\_EXTCONF\_H="extconf.h" -I/usr/local/opt/libyaml/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/readline/include -D\_XOPEN\_SOURCE -D\_DARWIN\_C\_SOURCE -D\_DARWIN\_UNLIMITED\_SELECT -D\_REENTRANT -Wall -fexceptions -c /Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src/x86/ffi64.c -fno-common -DPIC -o src/x86/.libs/ffi64.o > /bin/sh ./libtool --tag=CC --mode=compile clang -DHAVE\_CONFIG\_H -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/include -Iinclude -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src -DRUBY\_EXTCONF\_H="extconf.h" -I/usr/local/opt/libyaml/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/readline/include -D\_XOPEN\_SOURCE -D\_DARWIN\_C\_SOURCE -D\_DARWIN\_UNLIMITED\_SELECT -D\_REENTRANT -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/include -Iinclude -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src -c -o src/x86/unix64.lo /Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src/x86/unix64.S > libtool: compile: clang -DHAVE\_CONFIG\_H -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/include -Iinclude -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src -DRUBY\_EXTCONF\_H="extconf.h" -I/usr/local/opt/libyaml/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/readline/include -D\_XOPEN\_SOURCE -D\_DARWIN\_C\_SOURCE -D\_DARWIN\_UNLIMITED\_SELECT -D\_REENTRANT -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/include -Iinclude -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src -c /Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src/x86/unix64.S -fno-common -DPIC -o src/x86/.libs/unix64.o > /bin/sh ./libtool --tag=CC --mode=compile clang -DHAVE\_CONFIG\_H -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/include -Iinclude -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src -DRUBY\_EXTCONF\_H="extconf.h" -I/usr/local/opt/libyaml/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/readline/include -D\_XOPEN\_SOURCE -D\_DARWIN\_C\_SOURCE -D\_DARWIN\_UNLIMITED\_SELECT -D\_REENTRANT -Wall -fexceptions -c -o src/x86/ffiw64.lo /Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src/x86/ffiw64.c > libtool: compile: clang -DHAVE\_CONFIG\_H -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/include -Iinclude -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src -DRUBY\_EXTCONF\_H="extconf.h" -I/usr/local/opt/libyaml/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/readline/include -D\_XOPEN\_SOURCE -D\_DARWIN\_C\_SOURCE -D\_DARWIN\_UNLIMITED\_SELECT -D\_REENTRANT -Wall -fexceptions -c /Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src/x86/ffiw64.c -fno-common -DPIC -o src/x86/.libs/ffiw64.o > /bin/sh ./libtool --tag=CC --mode=compile clang -DHAVE\_CONFIG\_H -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/include -Iinclude -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src -DRUBY\_EXTCONF\_H="extconf.h" -I/usr/local/opt/libyaml/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/readline/include -D\_XOPEN\_SOURCE -D\_DARWIN\_C\_SOURCE -D\_DARWIN\_UNLIMITED\_SELECT -D\_REENTRANT -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/include -Iinclude -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src -c -o src/x86/win64.lo /Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src/x86/win64.S > libtool: compile: clang -DHAVE\_CONFIG\_H -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/include -Iinclude -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src -DRUBY\_EXTCONF\_H="extconf.h" -I/usr/local/opt/libyaml/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/readline/include -D\_XOPEN\_SOURCE -D\_DARWIN\_C\_SOURCE -D\_DARWIN\_UNLIMITED\_SELECT -D\_REENTRANT -I. -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/include -Iinclude -I/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src -c /Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi/src/x86/win64.S -fno-common -DPIC -o src/x86/.libs/win64.o > /bin/sh ./libtool --tag=CC --mode=link clang -Wall -fexceptions -Wl,-pie -Wl,-headerpad\_max\_install\_names -Wl,-dead\_strip\_dylibs -o libffi\_convenience.la src/prep\_cif.lo src/types.lo src/raw\_api.lo src/java\_raw\_api.lo src/closures.lo src/x86/ffi64.lo src/x86/unix64.lo src/x86/ffiw64.lo src/x86/win64.lo > libtool: link: libtool -static cru .libs/libffi\_convenience.a src/.libs/prep\_cif.o src/.libs/types.o src/.libs/raw\_api.o src/.libs/java\_raw\_api.o src/.libs/closures.o src/x86/.libs/ffi64.o src/x86/.libs/unix64.o src/x86/.libs/ffiw64.o src/x86/.libs/win64.o > error: /Library/Developer/CommandLineTools/usr/bin/libtool: no output file specified (specify with -o output) > Usage: /Library/Developer/CommandLineTools/usr/bin/libtool -static [-] file […] [-filelist listfile[,dirname]] [-arch\_only arch] [-sacLT] [-no\_warning\_for\_no\_symbols] > Usage: /Library/Developer/CommandLineTools/usr/bin/libtool -dynamic [-] file […] [-filelist listfile[,dirname]] [-arch\_only arch] [-o output] [-install\_name name] [-compatibility\_version #] [-current\_version #] [-seg1addr 0x#] [-segs\_read\_only\_addr 0x#] [-segs\_read\_write\_addr 0x#] [-seg\_addr\_table] [-seg\_addr\_table\_filename \] [-all\_load] [-noall\_load] > make[3]: \*\*\* [Makefile:1072: libffi\_convenience.la] Error 1 > make[3]: Leaving directory ‘/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi-x86\_64-darwin19’ > make[2]: \*\*\* [Makefile:1348: all-recursive] Error 1 > make[2]: Leaving directory ‘/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi-x86\_64-darwin19’ > make[1]: \*\*\* [Makefile:623: all] Error 2 > make[1]: Leaving directory ‘/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi-x86\_64-darwin19’ > make: \*\*\* [libffi.darwin.mk:33: “/Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2/ext/ffi\_c/libffi-x86\_64-darwin19”/.libs/libffi\_convenience.a] Error 2 > > make failed, exit code 2 > > Gem files will remain installed in /Users/jim/.gem/ruby/2.7.0/gems/ffi-1.12.2 for inspection. > Results logged to /Users/jim/.gem/ruby/2.7.0/extensions/x86\_64-darwin-19/2.7.0/ffi-1.12.2/gem\_make.out > 1 gem installed ---
**Author:** ![CYLiu2019](https://yyz2.discourse-cdn.com/flex030/user_avatar/talk.jekyllrb.com/cyliu2019/32/3043_2.png) [@CYLiu2019](https://talk.jekyllrb.com/u/CYLiu2019)\ **Post date:** [May 31, 2020, 10:37pm UTC](https://talk.jekyllrb.com/t/issue-about-installing-jekyll/4502/2 "2020-05-31T22:37:52Z")
Finally, I figured it out. This is because I did not install rbnev.