run_config

#!/usr/bin/env bash
# SPDX-License-Identifier: BSD-2-Clause

# Project's root directory
SOURCE_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
MAIN_DIR="$(cd $SOURCE_DIR/.. && pwd)"

function no_ccmake_error {

   echo
   echo "ERROR: the ccmake tool has not been found on this system."
   echo "Install it on your system before re-running this command."
   echo "Hint: on Ubuntu/Debian systems, its package name is: cmake-curses-gui."
   echo
   echo "Important remarks"
   echo "----------------------"
   echo "The ccmake tool is not installed automatically by the build_toolchain"
   echo "script simply because it is not mandatory for building nor configuring"
   echo "Tilck. It is just a nicer curses GUI alternative to re-running the"
   echo "cmake_run script with the new options on the command line, like this: "
   echo
   echo "   ./script/cmake_run -DTERM_BIG_SCROLL_BUF=1 -DKERNEL_SHOW_LOGO=0"
   echo
}

function no_build_dir_error {

   echo
   echo "ERROR: the build directory '$BUILD_DIR' does not exist."
   echo
   echo "Typical case"
   echo "----------------------"
   echo "The build directory does not exist because you haven't run yet the"
   echo "cmake_run script in project's root directory. Run it first."
   echo
   echo "Advanced case"
   echo "----------------------"
   echo "If you're trying to configure a build directory outside of project's"
   echo "root directory, run this script (TILCK_ROOT/scripts/run_config)"
   echo "by passing the build directory as argument."
   echo
}

function invalid_build_directory {

   echo
   echo "ERROR: the build directory '$BUILD_DIR' is NOT a valid CMake build"
   echo "ERROR: directory. Reason: it does not contain a CMakeCache.txt file."
   echo
   echo "Hint: run the cmake_run script first."
   echo
}

if which bash &> /dev/null; then

   # The "which" tool is installed, we can use it to check for `ccmake`

   if ! which ccmake &> /dev/null; then
      no_ccmake_error
      exit 1
   fi

else

   # No "which" tool. Try to determine if `ccmake` exists by calling it.

   if ! ccmake --help &> /dev/null; then
      no_ccmake_error
      exit 1
   fi
fi

# OK, ccmake exists.

if [ -z "$1" ]; then
   BUILD_DIR="$MAIN_DIR/build"
else
   BUILD_DIR="$1"
fi

if ! [ -d "$BUILD_DIR" ]; then
   no_build_dir_error
   exit 1
fi

# OK, also the BUILD_DIR exists. But is it a valid cmake directory?

if ! [ -f "$BUILD_DIR/CMakeCache.txt" ]; then
   invalid_build_directory
   exit 1
fi

# Yes, everything is correct. Now run ccmake.
ccmake "$BUILD_DIR"