xcrun: error: SDK "iphoneos" cannot be located

Issue

I'm not experienced so I can't really pinpoint what is the problem. Thanks for the help.

I cloned this repo: https://github.com/flatlogic/react-native-starter.git

And was trying to follow the steps below:

Clone the repo

git clone https://github.com/flatlogic/react-native-starter.git

Navigate to clonned folder and Install dependencies

cd react-native-starter && yarn install

Install Pods

cd ios && pod install

When I got to the pod install I'm getting that error.

---

karar@Karars-MacBook-Air ios % pod install
Auto-linking React Native modules for target `ReactNativeStarter`: BVLinearGradient, RNCMaskedView, RNGestureHandler, RNLocalize, RNReanimated, RNScreens, RNVectorIcons, ReactNativeUiLib, react-native-safe-area-context, and toolbar-android
Analyzing dependencies
Fetching podspec for `DoubleConversion` from `../node_modules/react-native/third-party-podspecs/DoubleConversion.podspec`
Fetching podspec for `Folly` from `../node_modules/react-native/third-party-podspecs/Folly.podspec`
Fetching podspec for `glog` from `../node_modules/react-native/third-party-podspecs/glog.podspec`
Downloading dependencies
Installing BVLinearGradient (2.5.6)
Installing DoubleConversion (1.1.6)
Installing FBLazyVector (0.63.1)
Installing FBReactNativeSpec (0.63.1)
Installing Folly (2020.01.13.00)
Installing RCTRequired (0.63.1)
Installing RCTTypeSafety (0.63.1)
Installing RNCMaskedView (0.1.10)
Installing RNGestureHandler (1.8.0)
Installing RNLocalize (1.4.2)
Installing RNReanimated (1.13.1)
Installing RNScreens (2.11.0)
Installing RNVectorIcons (6.7.0)
Installing React (0.63.1)
Installing React-Core (0.63.1)
Installing React-CoreModules (0.63.1)
Installing React-RCTActionSheet (0.63.1)
Installing React-RCTAnimation (0.63.1)
Installing React-RCTBlob (0.63.1)
Installing React-RCTImage (0.63.1)
Installing React-RCTLinking (0.63.1)
Installing React-RCTNetwork (0.63.1)
Installing React-RCTSettings (0.63.1)
Installing React-RCTText (0.63.1)
Installing React-RCTVibration (0.63.1)
Installing React-callinvoker (0.63.1)
Installing React-cxxreact (0.63.1)
Installing React-jsi (0.63.1)
Installing React-jsiexecutor (0.63.1)
Installing React-jsinspector (0.63.1)
Installing ReactCommon (0.63.1)
Installing ReactNativeUiLib (3.41.0)
Installing Yoga (1.14.0)
Installing boost-for-react-native (1.63.0)
Installing glog (0.3.5)
[!] /bin/bash -c 
set -e
#!/bin/bash
# Copyright (c) Facebook, Inc. and its affiliates.
#
# This source code is licensed under the MIT license found in the
# LICENSE file in the root directory of this source tree.

set -e

PLATFORM_NAME="${PLATFORM_NAME:-iphoneos}"
CURRENT_ARCH="${CURRENT_ARCH}"

if [ -z "$CURRENT_ARCH" ] || [ "$CURRENT_ARCH" == "undefined_arch" ]; then
    # Xcode 10 beta sets CURRENT_ARCH to "undefined_arch", this leads to incorrect linker arg.
    # it's better to rely on platform name as fallback because architecture differs between simulator and device

    if [[ "$PLATFORM_NAME" == *"simulator"* ]]; then
        CURRENT_ARCH="x86_64"
    else
        CURRENT_ARCH="armv7"
    fi
fi

export CC="$(xcrun -find -sdk $PLATFORM_NAME cc) -arch $CURRENT_ARCH -isysroot $(xcrun -sdk $PLATFORM_NAME --show-sdk-path)"
export CXX="$CC"

# Remove automake symlink if it exists
if [ -h "test-driver" ]; then
    rm test-driver
fi

./configure --host arm-apple-darwin

# Fix build for tvOS
cat << EOF >> src/config.h

/* Add in so we have Apple Target Conditionals */
#ifdef __APPLE__
#include <TargetConditionals.h>
#include <Availability.h>
#endif

/* Special configuration for AppleTVOS */
#if TARGET_OS_TV
#undef HAVE_SYSCALL_H
#undef HAVE_SYS_SYSCALL_H
#undef OS_MACOSX
#endif

/* Special configuration for ucontext */
#undef HAVE_UCONTEXT_H
#undef PC_FROM_UCONTEXT
#if defined(__x86_64__)
#define PC_FROM_UCONTEXT uc_mcontext->__ss.__rip
#elif defined(__i386__)
#define PC_FROM_UCONTEXT uc_mcontext->__ss.__eip
#endif
EOF

# Prepare exported header include
EXPORTED_INCLUDE_DIR="exported/glog"
mkdir -p exported/glog
cp -f src/glog/log_severity.h "$EXPORTED_INCLUDE_DIR/"
cp -f src/glog/logging.h "$EXPORTED_INCLUDE_DIR/"
cp -f src/glog/raw_logging.h "$EXPORTED_INCLUDE_DIR/"
cp -f src/glog/stl_logging.h "$EXPORTED_INCLUDE_DIR/"
cp -f src/glog/vlog_is_on.h "$EXPORTED_INCLUDE_DIR/"

checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for arm-apple-darwin-strip... no
checking for strip... strip
checking for a thread-safe mkdir -p... ./install-sh -c -d
checking for gawk... no
checking for mawk... no
checking for nawk... no
checking for awk... awk
checking whether make sets $(MAKE)... yes
checking whether make supports nested variables... yes
checking for arm-apple-darwin-gcc... /Library/Developer/CommandLineTools/usr/bin/cc -arch armv7 -isysroot 
checking whether the C compiler works... no
xcrun: error: SDK "iphoneos" cannot be located
xcrun: error: SDK "iphoneos" cannot be located
xcrun: error: SDK "iphoneos" cannot be located
xcrun: error: unable to lookup item 'Path' in SDK 'iphoneos'
/Users/karar/Library/Caches/CocoaPods/Pods/External/glog/2263bd123499e5b93b5efe24871be317-40a13/missing: Unknown `--is-lightweight' option
Try `/Users/karar/Library/Caches/CocoaPods/Pods/External/glog/2263bd123499e5b93b5efe24871be317-40a13/missing --help' for more information
configure: WARNING: 'missing' script is too old or missing
configure: error: in `/Users/karar/Library/Caches/CocoaPods/Pods/External/glog/2263bd123499e5b93b5efe24871be317-40a13':
configure: error: C compiler cannot create executables
See `config.log' for more details

karar@Karars-MacBook-Air ios % 

Solution

1. Launch Xcode
2. Settings
3. Locations
4. Make sure there's a dropdown option selected for the command line tools

NOTE: Even if you're seeing Command Line Tools dropdown being selected with proper version, you might want to re-select it again. It will ask for login password

Fixed it for me.

fixed with:

Answered By - Karrar Al-Mimar