I’m on mac and following this guide: Install Discourse on macOS for development.
Got to this: bundle exec rake db:create db:migrate RAILS_ENV=test bundle exec rake db:create db:migrate and returning this error:
Could not find nokogiri-1.8.5 in any of the source
Run "bundle install" to install missing gems.
I ran bundle install, but midway, it returns an error, shown here:
Sorry. Here’s the error(In text)
An error occurred while installing pg (1.1.3), and Bundler cannot continue.
Make sure that
gem install pg -v '1.1.3' --source 'https://rubygems.org/'succeeds before bundling.
Sounds like you’re having trouble getting pg (postgres) installed. You’ll need to check the specific error logs to see why.
Here’s the log(Which is extremely long and confusing):
find_executable: checking for pg_config... -------------------- yes
--------------------
"xcrun clang -o conftest -I/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0/universal-darwin17 -I/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0/ruby/backward -I/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0 -I. -I/usr/local/Cellar/postgresql/11.1_1/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -D_DARWIN_UNLIMITED_SELECT -D_REENTRANT -g -Os -pipe -DHAVE_GCC_ATOMIC_BUILTINS -iwithsysroot /usr/local/libressl/include conftest.c -L. -L/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib -L/usr/local/lib -L. -L /BuildRoot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.Internal.sdk/usr/local/libressl/lib -L/BuildRoot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.Internal.sdk/usr/local/lib -arch x86_64 -arch i386 -lruby.2.3.0 -lpthread -ldl -lobjc "
ld: warning: directory not found for option '-L/BuildRoot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.Internal.sdk/usr/local/libressl/lib'
ld: warning: directory not found for option '-L/BuildRoot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.Internal.sdk/usr/local/lib'
ld: warning: text-based stub file /System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/libruby.2.3.0.tbd and library file /System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/libruby.2.3.0.dylib are out of sync. Falling back to library file for linking.
ld: warning: directory not found for option '-L/BuildRoot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.Internal.sdk/usr/local/libressl/lib'
ld: warning: directory not found for option '-L/BuildRoot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.Internal.sdk/usr/local/lib'
ld: warning: text-based stub file /System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/libruby.2.3.0.tbd and library file /System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/libruby.2.3.0.dylib are out of sync. Falling back to library file for linking.
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: int main(int argc, char **argv)
4: {
5: return 0;
6: }
/* end */
"xcrun clang -o conftest -I/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0/universal-darwin17 -I/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0/ruby/backward -I/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0 -I. -I/usr/local/Cellar/postgresql/11.1_1/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -D_DARWIN_UNLIMITED_SELECT -D_REENTRANT -g -Os -pipe -DHAVE_GCC_ATOMIC_BUILTINS -iwithsysroot /usr/local/libressl/include conftest.c -L. -L/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib -L/usr/local/lib -L. -L /BuildRoot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.Internal.sdk/usr/local/libressl/lib -L/BuildRoot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.Internal.sdk/usr/local/lib -arch x86_64 -arch i386 -lruby.2.3.0 -Wl,-rpath,/usr/local/lib -lpthread -ldl -lobjc "
ld: warning: directory not found for option '-L/BuildRoot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.Internal.sdk/usr/local/libressl/lib'
ld: warning: directory not found for option '-L/BuildRoot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.Internal.sdk/usr/local/lib'
ld: warning: text-based stub file /System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/libruby.2.3.0.tbd and library file /System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/libruby.2.3.0.dylib are out of sync. Falling back to library file for linking.
ld: warning: directory not found for option '-L/BuildRoot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.Internal.sdk/usr/local/libressl/lib'
ld: warning: directory not found for option '-L/BuildRoot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.Internal.sdk/usr/local/lib'
ld: warning: text-based stub file /System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/libruby.2.3.0.tbd and library file /System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/libruby.2.3.0.dylib are out of sync. Falling back to library file for linking.
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: int main() {return 0;}
/* end */
find_header: checking for libpq-fe.h... -------------------- yes
"xcrun clang -I/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0/universal-darwin17 -I/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0/ruby/backward -I/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0 -I. -I/usr/local/Cellar/postgresql/11.1_1/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -D_DARWIN_UNLIMITED_SELECT -D_REENTRANT -g -Os -pipe -DHAVE_GCC_ATOMIC_BUILTINS -iwithsysroot /usr/local/libressl/include -arch x86_64 -arch i386 -c conftest.c"
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: #include <libpq-fe.h>
/* end */
--------------------
find_header: checking for libpq/libpq-fs.h... -------------------- yes
"xcrun clang -I/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0/universal-darwin17 -I/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0/ruby/backward -I/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0 -I. -I/usr/local/Cellar/postgresql/11.1_1/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -D_DARWIN_UNLIMITED_SELECT -D_REENTRANT -g -Os -pipe -DHAVE_GCC_ATOMIC_BUILTINS -iwithsysroot /usr/local/libressl/include -arch x86_64 -arch i386 -c conftest.c"
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: #include <libpq/libpq-fs.h>
/* end */
--------------------
find_header: checking for pg_config_manual.h... -------------------- yes
"xcrun clang -I/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0/universal-darwin17 -I/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0/ruby/backward -I/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0 -I. -I/usr/local/Cellar/postgresql/11.1_1/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -D_DARWIN_UNLIMITED_SELECT -D_REENTRANT -g -Os -pipe -DHAVE_GCC_ATOMIC_BUILTINS -iwithsysroot /usr/local/libressl/include -arch x86_64 -arch i386 -c conftest.c"
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: #include <pg_config_manual.h>
/* end */
--------------------
have_library: checking for PQconnectdb() in -lpq... -------------------- no
"xcrun clang -o conftest -I/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0/universal-darwin17 -I/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0/ruby/backward -I/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0 -I. -I/usr/local/Cellar/postgresql/11.1_1/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -D_DARWIN_UNLIMITED_SELECT -D_REENTRANT -g -Os -pipe -DHAVE_GCC_ATOMIC_BUILTINS -iwithsysroot /usr/local/libressl/include conftest.c -L. -L/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib -L/usr/local/lib -L. -L /BuildRoot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.Internal.sdk/usr/local/libressl/lib -L/BuildRoot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.Internal.sdk/usr/local/lib -Wl,-rpath,/usr/local/lib -arch x86_64 -arch i386 -lruby.2.3.0 -lpq -lpthread -ldl -lobjc "
ld: warning: directory not found for option '-L/BuildRoot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.Internal.sdk/usr/local/libressl/lib'
ld: warning: directory not found for option '-L/BuildRoot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.Internal.sdk/usr/local/lib'
ld: warning: text-based stub file /System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/libruby.2.3.0.tbd and library file /System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/libruby.2.3.0.dylib are out of sync. Falling back to library file for linking.
ld: warning: directory not found for option '-L/BuildRoot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.Internal.sdk/usr/local/libressl/lib'
ld: warning: directory not found for option '-L/BuildRoot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.Internal.sdk/usr/local/lib'
ld: warning: text-based stub file /System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/libruby.2.3.0.tbd and library file /System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/libruby.2.3.0.dylib are out of sync. Falling back to library file for linking.
ld: warning: ignoring file /usr/local/lib/libpq.dylib, file was built for x86_64 which is not the architecture being linked (i386): /usr/local/lib/libpq.dylib
Undefined symbols for architecture i386:
"_PQconnectdb", referenced from:
_t in conftest-79115b.o
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: #include <libpq-fe.h>
4:
5: /*top*/
6: extern int t(void);
7: int main(int argc, char **argv)
8: {
9: if (argc > 1000000) {
10: printf("%p", &t);
11: }
12:
13: return 0;
14: }
15: int t(void) { void ((*volatile p)()); p = (void ((*)()))PQconnectdb; return !p; }
/* end */
"xcrun clang -o conftest -I/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0/universal-darwin17 -I/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0/ruby/backward -I/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0 -I. -I/usr/local/Cellar/postgresql/11.1_1/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -D_DARWIN_UNLIMITED_SELECT -D_REENTRANT -g -Os -pipe -DHAVE_GCC_ATOMIC_BUILTINS -iwithsysroot /usr/local/libressl/include conftest.c -L. -L/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib -L/usr/local/lib -L. -L /BuildRoot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.Internal.sdk/usr/local/libressl/lib -L/BuildRoot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.Internal.sdk/usr/local/lib -Wl,-rpath,/usr/local/lib -arch x86_64 -arch i386 -lruby.2.3.0 -lpq -lpthread -ldl -lobjc "
conftest.c:15:13: error: conflicting types for 'PQconnectdb'
extern void PQconnectdb();
^
/usr/local/Cellar/postgresql/11.1_1/include/libpq-fe.h:261:16: note: previous declaration is here
extern PGconn *PQconnectdb(const char *conninfo);
^
conftest.c:16:27: error: too few arguments to function call, single argument 'conninfo' was not specified
int t(void) { PQconnectdb(); return 0; }
~~~~~~~~~~~ ^
/usr/local/Cellar/postgresql/11.1_1/include/libpq-fe.h:261:1: note: 'PQconnectdb' declared here
extern PGconn *PQconnectdb(const char *conninfo);
^
2 errors generated.
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: #include <libpq-fe.h>
4:
5: /*top*/
6: extern int t(void);
7: int main(int argc, char **argv)
8: {
9: if (argc > 1000000) {
10: printf("%p", &t);
11: }
12:
13: return 0;
14: }
15: extern void PQconnectdb();
16: int t(void) { PQconnectdb(); return 0; }
/* end */
--------------------
have_library: checking for PQconnectdb() in -llibpq... -------------------- no
"xcrun clang -o conftest -I/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0/universal-darwin17 -I/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0/ruby/backward -I/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0 -I. -I/usr/local/Cellar/postgresql/11.1_1/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -D_DARWIN_UNLIMITED_SELECT -D_REENTRANT -g -Os -pipe -DHAVE_GCC_ATOMIC_BUILTINS -iwithsysroot /usr/local/libressl/include conftest.c -L. -L/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib -L/usr/local/lib -L. -L /BuildRoot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.Internal.sdk/usr/local/libressl/lib -L/BuildRoot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.Internal.sdk/usr/local/lib -Wl,-rpath,/usr/local/lib -arch x86_64 -arch i386 -lruby.2.3.0 -llibpq -lpthread -ldl -lobjc "
ld: warning: directory not found for option '-L/BuildRoot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.Internal.sdk/usr/local/libressl/lib'
ld: warning: directory not found for option '-L/BuildRoot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.Internal.sdk/usr/local/lib'
ld: warning: text-based stub file /System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/libruby.2.3.0.tbd and library file /System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/libruby.2.3.0.dylib are out of sync. Falling back to library file for linking.
ld: library not found for -llibpq
clang: error: linker command failed with exit code 1 (use -v to see invocation)
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: #include <libpq-fe.h>
4:
5: /*top*/
6: extern int t(void);
7: int main(int argc, char **argv)
8: {
9: if (argc > 1000000) {
10: printf("%p", &t);
11: }
12:
13: return 0;
14: }
15: int t(void) { void ((*volatile p)()); p = (void ((*)()))PQconnectdb; return !p; }
/* end */
"xcrun clang -o conftest -I/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0/universal-darwin17 -I/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0/ruby/backward -I/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0 -I. -I/usr/local/Cellar/postgresql/11.1_1/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -D_DARWIN_UNLIMITED_SELECT -D_REENTRANT -g -Os -pipe -DHAVE_GCC_ATOMIC_BUILTINS -iwithsysroot /usr/local/libressl/include conftest.c -L. -L/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib -L/usr/local/lib -L. -L /BuildRoot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.Internal.sdk/usr/local/libressl/lib -L/BuildRoot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.Internal.sdk/usr/local/lib -Wl,-rpath,/usr/local/lib -arch x86_64 -arch i386 -lruby.2.3.0 -llibpq -lpthread -ldl -lobjc "
conftest.c:15:13: error: conflicting types for 'PQconnectdb'
extern void PQconnectdb();
^
/usr/local/Cellar/postgresql/11.1_1/include/libpq-fe.h:261:16: note: previous declaration is here
extern PGconn *PQconnectdb(const char *conninfo);
^
conftest.c:16:27: error: too few arguments to function call, single argument 'conninfo' was not specified
int t(void) { PQconnectdb(); return 0; }
~~~~~~~~~~~ ^
/usr/local/Cellar/postgresql/11.1_1/include/libpq-fe.h:261:1: note: 'PQconnectdb' declared here
extern PGconn *PQconnectdb(const char *conninfo);
^
2 errors generated.
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: #include <libpq-fe.h>
4:
5: /*top*/
6: extern int t(void);
7: int main(int argc, char **argv)
8: {
9: if (argc > 1000000) {
10: printf("%p", &t);
11: }
12:
13: return 0;
14: }
15: extern void PQconnectdb();
16: int t(void) { PQconnectdb(); return 0; }
/* end */
--------------------
have_library: checking for PQconnectdb() in -lms/libpq... -------------------- no
"xcrun clang -o conftest -I/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0/universal-darwin17 -I/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0/ruby/backward -I/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0 -I. -I/usr/local/Cellar/postgresql/11.1_1/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -D_DARWIN_UNLIMITED_SELECT -D_REENTRANT -g -Os -pipe -DHAVE_GCC_ATOMIC_BUILTINS -iwithsysroot /usr/local/libressl/include conftest.c -L. -L/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib -L/usr/local/lib -L. -L /BuildRoot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.Internal.sdk/usr/local/libressl/lib -L/BuildRoot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.Internal.sdk/usr/local/lib -Wl,-rpath,/usr/local/lib -arch x86_64 -arch i386 -lruby.2.3.0 -lms/libpq -lpthread -ldl -lobjc "
ld: warning: directory not found for option '-L/BuildRoot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.Internal.sdk/usr/local/libressl/lib'
ld: warning: directory not found for option '-L/BuildRoot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.Internal.sdk/usr/local/lib'
ld: warning: text-based stub file /System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/libruby.2.3.0.tbd and library file /System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/libruby.2.3.0.dylib are out of sync. Falling back to library file for linking.
ld: library not found for -lms/libpq
clang: error: linker command failed with exit code 1 (use -v to see invocation)
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: #include <libpq-fe.h>
4:
5: /*top*/
6: extern int t(void);
7: int main(int argc, char **argv)
8: {
9: if (argc > 1000000) {
10: printf("%p", &t);
11: }
12:
13: return 0;
14: }
15: int t(void) { void ((*volatile p)()); p = (void ((*)()))PQconnectdb; return !p; }
/* end */
"xcrun clang -o conftest -I/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0/universal-darwin17 -I/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0/ruby/backward -I/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0 -I. -I/usr/local/Cellar/postgresql/11.1_1/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -D_DARWIN_UNLIMITED_SELECT -D_REENTRANT -g -Os -pipe -DHAVE_GCC_ATOMIC_BUILTINS -iwithsysroot /usr/local/libressl/include conftest.c -L. -L/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib -L/usr/local/lib -L. -L /BuildRoot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.Internal.sdk/usr/local/libressl/lib -L/BuildRoot/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.Internal.sdk/usr/local/lib -Wl,-rpath,/usr/local/lib -arch x86_64 -arch i386 -lruby.2.3.0 -lms/libpq -lpthread -ldl -lobjc "
conftest.c:15:13: error: conflicting types for 'PQconnectdb'
extern void PQconnectdb();
^
/usr/local/Cellar/postgresql/11.1_1/include/libpq-fe.h:261:16: note: previous declaration is here
extern PGconn *PQconnectdb(const char *conninfo);
^
conftest.c:16:27: error: too few arguments to function call, single argument 'conninfo' was not specified
int t(void) { PQconnectdb(); return 0; }
~~~~~~~~~~~ ^
/usr/local/Cellar/postgresql/11.1_1/include/libpq-fe.h:261:1: note: 'PQconnectdb' declared here
extern PGconn *PQconnectdb(const char *conninfo);
^
2 errors generated.
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: #include <libpq-fe.h>
4:
5: /*top*/
6: extern int t(void);
7: int main(int argc, char **argv)
8: {
9: if (argc > 1000000) {
10: printf("%p", &t);
11: }
12:
13: return 0;
14: }
15: extern void PQconnectdb();
16: int t(void) { PQconnectdb(); return 0; }
/* end */
--------------------
Your computer is having trouble compiling things if you read the first error there.
ld: warning: ignoring file /usr/local/lib/libpq.dylib, file was built for x86_64 which is not the architecture being linked (i386): /usr/local/lib/libpq.dylib
Undefined symbols for architecture i386:
"_PQconnectdb", referenced from:
_t in conftest-79115b.o
ld: symbol(s) not found for architecture i386
Try searching in Google for the relevant error, above.
I can’t seem to run bash <(curl -s https://raw.githubusercontent.com/techAPJ/install-rails/master/mac), and it returns an error sh: syntax error near unexpected token ('`
Were any messages output before the error? You’ve not given any indication whether the script ran at all, or threw an error part-way.
이 주제가 다시 올라온 게 반갑네요 (순전히 우연이지만). 이 문제는 이미 한동안 존재해 왔고 Apple Silicon Mac에 국한된 것이 아닌 것 같습니다.
저도 여러분과 동일한 가이드를 따라 M1 iMac에서 같은 문제를 겪었습니다. @blake 님이 정말 친절하게 workaround를 찾아주셨어요. 
m1 mac에서 작동하게 만들 수 있었습니다. 정확한 문제는 모르겠지만, 사용할 수 있는 workaround입니다.
첫 번째 터미널 탭에서 다음을 실행하세요:
bin/rails server --binding 127.0.0.1두 번째 터미널 탭에서 discourse 디렉터리 안의 이 디렉터리로 이동하세요.
cd app/assets/javascripts/discourse그 다음 이 명령을 실행하세요:
ember server --proxy http://127.0.0.1:3000그 후 http://localhost:4200으로 이동하세요
확신은 없습니다. 이제 m1 맥에서는 ember server --proxy를 사용할 필요가 없습니다. 지금은 루트 discourse 디렉터리 안에서 터미널 탭을 하나 열고 bin/ember-cli -u를 실행하는 것이 일반적인 방법입니다. 이 명령 하나로 rails와 ember 서버를 모두 실행할 수 있습니다. 이 방법을 시도해 보시고 동작하는지 확인해 주시겠어요?
감사합니다！！！！！！ 
