Apple Mach-O Linker Error when trying to use RestKit

Question

I installed cocoapods and it shown as below

Analyzing dependencies
Downloading dependencies
Using ISO8601DateFormatterValueTransformer (0.6.1)
Using RKValueTransformers (1.1.3)
Using RestKit (0.27.0)
Using SOCKit (1.1)
Using TransitionKit (2.2.1)
Generating Pods project
Integrating client project
Sending stats
Pod installation complete! There is 1 dependency from the Podfile and 5 total pods installed.

Also I put '-ObjC' and '$(inherited)' inside 'other linker flags' and there are

${PODS_ROOT}/Headers/Public/AFNetworking
${PODS_ROOT}/Headers/Public/Bolts
${PODS_ROOT}/Headers/Public/ISO8601DateFormatterValueTransformer
${PODS_ROOT}/Headers/Public/RKValueTransformers
${PODS_ROOT}/Headers/Public/RestKit 
${PODS_ROOT}/Headers/Public/SOCKit
${PODS_ROOT}/Headers/Public

already inside 'Header Search Path' with all non-recursive. Every time I tried to run the project it gave me 'linker command failed with exit code 1 (use -v to see invocation)'. And also when I changed them to recursive, the 'linker command failed with exit code 1 (use -v to see invocation)' occured. The podfile is

platform :ios, '10.2'
target 'Fpace' do
pod 'RestKit'
end

Answer 1

Are you opening the Xcode project or workspace? You must always use the *.workspace file in CocoaPods based projects.

In your specific case, that should be the Fpace.workspace bundle.