Script to easily compile in Linux

build-lhdr

@@ -0,0 +1,140 @@
+#!/usr/bin/env bash
+# By Morgan Hardwood
+# Version 2018-01-06
+# This script gets the latest source code for the given program and compiles it.
+
+# The name of the program, used for the folder names:
+prog="lhdr"
+
+# The name of the compiled executable:
+exe="luminance-hdr"
+
+# The name of the sub-folder, if any, relative to the folder into which the
+# compiled executable is placed.
+# e.g. If the executable ends up in:
+#   ~/programs/someProgram/foo/bar/someExecutable
+# then set it to:
+#   exeRelativePath="foo/bar"
+# or if the executable ends up in
+#   ~/programs/someProgram/someExecutable
+# then leave it empty:
+# exeRelativePath=""
+exeRelativePath="bin"
+
+# The path to the repository:
+repo="https://github.com/LuminanceHDR/LuminanceHDR.git"
+
+# No touching below this line, with the exception of the "Compile" section
+# -----------------------------------------------------------------------------
+
+# The name of the project's standard branch, typically "master":
+master="master"
+
+buildOnly="false"
+buildType="release"
+
+# Removes the trailing forward-slash if one is present
+exeRelativePath="${exeRelativePath/%\/}"
+# Append forward-slash to exeRelativePath only if it is not empty.
+exePath="${exeRelativePath:+${exeRelativePath}/}${exe}"
+
+# Command-line arguments
+OPTIND=1
+while getopts "bdh?-" opt; do
+    case "${opt}" in
+        b)  buildOnly="true"
+            ;;
+        d)  buildType="debug"
+            ;;
+        h|\?|-) printf '%s\n' "This script gets the latest source code for ${prog} and compiles it." \
+                "" \
+                "  -b" \
+                "     Optional. If specified, the script only compiles the source, it does not try to update the source. If not specified, the source will be updated first." \
+                "  -d" \
+                "     Optional. Compile a \"debug\" build. If not specified, a \"release\" build will be made." \
+                ""
+        exit 0
+        ;;
+    esac
+done
+shift $((OPTIND-1))
+[ "$1" = "--" ] && shift
+
+printf '%s\n' "" "Program name: ${prog}" "Build type: ${buildType}" "Build without updating: ${buildOnly}" ""
+
+# Clone if needed
+cloned="false"
+updates="false"
+if [[ ! -d "$HOME/programs/code-${prog}" ]]; then
+    mkdir -p "$HOME/programs" || exit 1
+    git clone "$repo" "$HOME/programs/code-${prog}" || exit 1
+    pushd "$HOME/programs/code-${prog}" 1>/dev/null || exit 1
+    cloned="true"
+else
+    pushd "$HOME/programs/code-${prog}" 1>/dev/null || exit 1
+    git fetch
+    if [[ $(git rev-parse HEAD) != $(git rev-parse '@{u}') ]]; then
+        updates="true"
+    fi
+fi
+
+# Pull updates if necessary
+if [[ "$updates" = "true" && "$buildOnly" = "false" ]]; then
+    git pull || exit 1
+fi
+
+# Find out which branch git is on
+branch="$(git rev-parse --abbrev-ref HEAD)"
+
+# Set build and install folder names
+if [[ $branch = $master && $buildType = release ]]; then
+    buildDir="$HOME/programs/code-${prog}/build"
+    installDir="$HOME/programs/${prog}"
+else
+    buildDir="$HOME/programs/code-${prog}/build-${branch}-${buildType}"
+    installDir="$HOME/programs/${prog}-${branch}-${buildType}"
+fi
+
+existsExe="false"
+if [[ -e "${installDir}/${exePath}" ]]; then
+    existsExe="true"
+fi
+
+# Quit if no updates and build-only flag not set
+if [[ "$cloned" = "false" && "$buildOnly" = "false" && "$updates" = "false" && "$existsExe" = "true" ]]; then
+    printf '%s\n' "No updates, nothing to do."
+    exit 0
+fi
+
+# Determine CPU count
+cpuCount="fail"
+if command -v nproc >/dev/null 2>&1; then
+    cpuCount="$(nproc --all)"
+fi
+if [[ ! ( $cpuCount -ge 1 && $cpuCount -le 64 ) ]]; then
+    cpuCount=1
+fi
+
+# Prepare folders
+rm -rf "${installDir}"
+mkdir -p "${buildDir}" "${installDir}" || exit 1
+cd "${buildDir}" || exit 1
+
+# -----------------------------------------------------------------------------
+# Compile
+
+cmake \
+    -DCMAKE_CXX_FLAGS="-std=c++11 -Wno-deprecated-declarations -Wno-unused-result" \
+    -DCMAKE_INSTALL_PREFIX="${installDir}" \
+    -DCMAKE_BUILD_TYPE="$buildType"  \
+    -DCMAKE_C_FLAGS="-O2 -pipe" \
+    -DCMAKE_CXX_FLAGS="${CMAKE_C_FLAGS}" \
+    "$HOME/programs/code-${prog}" || exit 1
+
+make --jobs="$cpuCount" || exit 1
+make install || exit 1
+
+# Finished
+printf '%s\n' "" "To run ${prog} type:" "${installDir}/${exePath}" ""
+
+popd 1>/dev/null