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nagiyevelchin/glog-pod-install-problem.md

Last active November 9, 2023 11:27
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Troubleshooting glog Installation Failure in React Native on macOS
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glog-pod-install-problem.md

When attempting to set up a new React Native project using npx react-native init projectName or executing pod install within the iOS folder, you may encounter a frustrating roadblock during the pod install phase, specifically with glog on macOS. The error typically looks like this:

-> Installing glog (0.3.5)
...
...
patching file config.sub
Hunk #1 FAILED at 1096.
1 out of 1 hunk FAILED -- saving rejects to file config.sub.rej

The root cause of this issue may lie in an incorrect git configuration related to line endings for *nix on macOS.

To resolve this, ensure your git configuration is set correctly for Linux and macOS environments:

git config --global core.autocrlf input

Alternatively, you can unset the configuration and use the default, default which is false:

git config --global --unset core.autocrlf

A big thanks to shwanton for shedding light on this solution. Make sure to follow these steps to overcome the glog installation hurdle and keep your React Native project running smoothly on macOS.

Full error log of this problem provided below.

-> Installing glog (0.3.5)
 > Git download
 > Git download
     $ /usr/bin/git clone https://github.com/google/glog.git /var/folders/qx/1qhwb74d773dvkh766ptvvc40000gp/T/d20220713-53397-4ju0tc --template= --single-branch --depth 1 --branch v0.3.5
     Cloning into '/var/folders/qx/1qhwb74d773dvkh766ptvvc40000gp/T/d20220713-53397-4ju0tc'...
     Note: switching to 'a6a166db069520dbbd653c97c2e5b12e08a8bb26'.
     
     You are in 'detached HEAD' state. You can look around, make experimental
     changes and commit them, and you can discard any commits you make in this
     state without impacting any branches by switching back to a branch.
     
     If you want to create a new branch to retain commits you create, you may
     do so (now or later) by using -c with the switch command. Example:
     
       git switch -c <new-branch-name>
     
     Or undo this operation with:
     
       git switch -
     
     Turn off this advice by setting config variable advice.detachedHead to false
     
 > Running prepare command
   $ /bin/bash -c  set -e #!/bin/bash # Copyright (c) Meta Platforms, Inc. and 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 [[ "$PLATFORM_NAME" == *"simulator"* ]]; then         CURRENT_ARCH="x86_64"     else         CURRENT_ARCH="arm64"     fi fi  if [ "$CURRENT_ARCH" == "arm64" ]; then     cat <<\EOF >>fix_glog_0.3.5_apple_silicon.patch diff --git a/config.sub b/config.sub index
   1761d8b..43fa2e8 100755 --- a/config.sub +++ b/config.sub @@ -1096,6 +1096,9 @@ case $basic_machine in  		basic_machine=z8k-unknown  		os=-sim  		;; +	arm64-*) +		basic_machine=$(echo $basic_machine | sed 's/arm64/aarch64/') +		;;  	none)  		basic_machine=none-none  		os=-none EOF      patch
   -p1 config.sub fix_glog_0.3.5_apple_silicon.patch fi  export CC="$(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  #
   Manually disable gflags include to fix issue https://github.com/facebook/react-native/issues/28446 sed -i '' 's/\@ac_cv_have_libgflags\@/0/' src/glog/logging.h.in sed -i '' 's/HAVE_LIB_GFLAGS/HAVE_LIB_GFLAGS_DISABLED/' src/config.h.in  ./configure --host arm-apple-darwin  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 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/"
   patching file config.sub
   Hunk #1 FAILED at 1096.
   1 out of 1 hunk FAILED -- saving rejects to file config.sub.rej
[!] /bin/bash -c 
set -e
#!/bin/bash
# Copyright (c) Meta Platforms, Inc. and 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="arm64"
    fi
fi

if [ "$CURRENT_ARCH" == "arm64" ]; then
    cat <<\EOF >>fix_glog_0.3.5_apple_silicon.patch
diff --git a/config.sub b/config.sub
index 1761d8b..43fa2e8 100755
--- a/config.sub
+++ b/config.sub
@@ -1096,6 +1096,9 @@ case $basic_machine in
 		basic_machine=z8k-unknown
 		os=-sim
 		;;
+	arm64-*)
+		basic_machine=$(echo $basic_machine | sed 's/arm64/aarch64/')
+		;;
 	none)
 		basic_machine=none-none
 		os=-none
EOF

    patch -p1 config.sub fix_glog_0.3.5_apple_silicon.patch
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

# Manually disable gflags include to fix issue https://github.com/facebook/react-native/issues/28446
sed -i '' 's/\@ac_cv_have_libgflags\@/0/' src/glog/logging.h.in
sed -i '' 's/HAVE_LIB_GFLAGS/HAVE_LIB_GFLAGS_DISABLED/' src/config.h.in

./configure --host arm-apple-darwin

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 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/"

patching file config.sub
Hunk #1 FAILED at 1096.
1 out of 1 hunk FAILED -- saving rejects to file config.sub.rej
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