add simple easy-builder script

diff --git a/README.md b/README.md
index 192d2826469cebf1a364067ea357c994da421a99..04d4ff14a1543058358db1cbbf510cd6f9a56fab 100644 (file)
--- a/README.md
+++ b/README.md
@@ -88,7 +88,28 @@ git submodule update --init --recursive
 ```
 
 
-## Compiling
+## Simple compilation
+
+
+### Easy builder assistant
+
+If you have standard needs and use well-known platform and operating system, you may try the provided `easy-builder` script which may be enough for you:
+
+```sh
+./easy-builder
+```
+
+If anything goes right, you'll find your netradiant build in `install/` subdirectory.
+
+If you need to build a debug build (to get help from a developer, for example), you can do it that way:
+
+```sh
+./easy-builder --debug
+```
+
+By default, build tools and compilers use the `build/` directory as workspace.
+
+## Advanced compilation
 
 ### Initial build
 

diff --git a/easy-builder b/easy-builder
new file mode 100755 (executable)
index 0000000..7966bd2
--- /dev/null
+++ b/easy-builder
@@ -0,0 +1,103 @@
+#! /usr/bin/env bash
+
+# This script is meant to be kept small and simple
+# If you think about adding features, it's probably a bad idea
+
+set -e # exit if a command fails
+set -o pipefail # Will return the exit status of make if it fails
+
+project_source_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null 2>&1 && pwd)"
+
+job_count='4'
+if command -v nproc >/dev/null
+then
+       job_count="$(nproc)"
+fi
+
+build_dir="${project_source_dir}/build${SUBDIR:+/${SUBDIR}}"
+install_dir="${project_source_dir}/install${SUBDIR:+/${SUBDIR}}"
+
+build_type='Release'
+
+cmake_user_opts=''
+while [ ! -z ${1} ]
+do
+    case "${1}" in
+    '-j'*)
+        job_count="${1:2}"
+        shift
+        ;;
+    '--debug')
+        build_type='Debug'
+        shift
+        ;;
+    *)
+       cmake_user_opts+=" ${1}"
+       shift
+        ;;
+    esac
+done
+
+cmake_opts=''
+case "$(uname -s)" in
+       'Linux')
+               # no tweak required
+               ;;
+       'FreeBSD')
+               if [ -f "$(ls '/usr/local/bin/g++'* | sort | tail -n1)" ]
+               then
+                       gcc_version="$(ls '/usr/local/bin/g++'* | sort | tail -n1 | sed -e 's/.*[^0-9]\([0-9][0-9]*\)$/\1/')"
+                       cmake_opts+=" -DCMAKE_C_COMPILER=/usr/local/bin/gcc${gcc_version}"
+                       cmake_opts+=" -DCMAKE_CXX_COMPILER=/usr/local/bin/g++${gcc_version}"
+               else
+                       printf "WARNING: GCC is recommended: if build fails, install GCC and retry\n" >&2
+               fi
+               ;;
+       'Darwin')
+               if [ -f "$(ls '/usr/local/bin/g++-'* | sort | tail -n1)" ]
+               then
+                       gcc_version="$(ls '/usr/local/bin/g++-'* | sort | tail -n1 | sed -e 's/.*[^0-9]\([0-9][0-9]*\)$/\1/')"
+                       cmake_opts+=" -DCMAKE_C_COMPILER=/usr/local/bin/gcc-${gcc_version}"
+                       cmake_opts+=" -DCMAKE_CXX_COMPILER=/usr/local/bin/g++-${gcc_version}"
+               else
+                       printf "WARNING: GCC is recommended: if build fails, install GCC and retry\n" >&2
+               fi
+               ;;
+       'MSYS_NT-'*)
+               # no tweak required
+               ;;
+       'CYGWIN_NT-'*|'MINGW'*'_NT-'*)
+               printf "WARNING: system is not tested: if build fails, use MSYS2 instead\n" >&2
+               ;;
+       *)
+               printf "WARNING: system is not tested\n" >&2
+               ;;
+esac
+
+fetch_submodules_cmd=''
+if ! [ -f "${project_source_dir}/libs/crunch/inc/crn_decomp.h" ]
+then
+       fetch_submodules_cmd='git submodule update --init --recursive'
+fi
+
+set -x
+
+cd "${project_source_dir}"
+
+${fetch_submodules_cmd}
+
+cmake \
+       -G'Unix Makefiles' \
+       -H'.' \
+       -B"${build_dir}" \
+       -D'CMAKE_INSTALL_PREFIX'="${install_dir}" \
+       -D'CMAKE_BUILD_TYPE'="${build_type}" \
+       ${cmake_opts} \
+       ${cmake_user_opts} \
+       ${@}
+
+cmake \
+       --build "${build_dir}" \
+       -- \
+       -j"${job_count}" \
+       install