Error: Running pod install failed, see above.

[YonatanKra]

This might be the source of #30 .
While creating a new app, I got this error:

chmod 509 apps/vacgaps/android/gradlew.bat
    chmod 509 apps/vacgaps/android/gradlew
✔ Packages installed successfully.
    creating symlinks for apps/vacgaps
✔ Packages installed successfully.
    Running `pod install` from "apps/vacgaps/ios"
    WARNING: CocoaPods requires your terminal to be using UTF-8 encoding.
    Consider adding the following to ~/.profile:
    export LANG=en_US.UTF-8
{:reactNativePath=>"../../../node_modules/react-native"}
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 CocoaAsyncSocket (7.6.5)
Installing CocoaLibEvent (1.0.0)
Installing DoubleConversion (1.1.6)
Installing FBLazyVector (0.63.4)
Installing FBReactNativeSpec (0.63.4)
Installing Flipper (0.54.0)
Installing Flipper-DoubleConversion (1.1.7)
Installing Flipper-Folly (2.3.0)
Installing Flipper-Glog (0.3.6)
[!] /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/ykra/Library/Caches/CocoaPods/Pods/Release/Flipper-Glog/0.3.6-1dfd6/missing: Unknown `--is-lightweight' option
Try `/Users/ykra/Library/Caches/CocoaPods/Pods/Release/Flipper-Glog/0.3.6-1dfd6/missing --help' for more information
configure: WARNING: 'missing' script is too old or missing
configure: error: in `/Users/ykra/Library/Caches/CocoaPods/Pods/Release/Flipper-Glog/0.3.6-1dfd6':
configure: error: C compiler cannot create executables
See `config.log' for more details
Error: Running `pod install` failed, see above.
Do you have CocoaPods (https://cocoapods.org/) installed?
    at ChildProcess.<anonymous> (/Users/ykra/projects/vacgaps/node_modules/@nrwl/react-native/src/utils/pod-install-task.js:45:27)
    at ChildProcess.emit (node:events:376:20)
    at maybeClose (node:internal/child_process:1063:16)
    at Process.ChildProcess._handle.onexit (node:internal/child_process:295:5)
Running `pod install` failed, see above.
Do you have CocoaPods (https://cocoapods.org/) installed?
npm ERR! code 1
npm ERR! path /Users/ykra/projects/vacgaps
npm ERR! command failed
npm ERR! command sh -c nx g @nrwl/react-native:app vacgaps

I already have coacoapods installed locally. Any idea why this has failed?

[jaysoo]

Looks like a configuration issue with Xcode. This might fix it for you:

sudo xcode-select --switch /Applications/Xcode.app

Also check this page out https://www.ryadel.com/en/xcode-sdk-iphoneos-cannot-be-located-mac-osx-error-fix/