general: readme; rename build.sh; clean.sh script

Fix readme

.gitignore

@@ -1 +1,2 @@
-/build/
+/twrp-build/
+/recovery.img

README.md

@@ -0,0 +1,35 @@
+# builders\_rubenslte
+
+This repository contains build scripts that automate the building of
+recoveries and ROMs for the Galaxy Tab Active SM-T365.
+
+# Build
+
+## Recovery
+
+```
+nix-shell shell.nix --run ./build_recovery.sh
+```
+
+# Device information
+
+| Basic             | Spec sheet                             |
+|-------------------|----------------------------------------|
+| Name              | Galaxy Tab Active                      |
+| Model             | SM-T365                                |
+| Codename          | rubenslte                              |
+| CPU               | Quad-core 1.2 GHz Cortex A-7           |
+| Chipset           | Qualcomm Snapdragon 400 (MSM8926, LTE) |
+| ro.board.platform | msm8226                                |
+| ro.product.board  | MSM8926                                |
+| GPU               | Qualcomm Adreno 305                    |
+| Memory            | 1.5 GB                                 |
+| Shipped Android   | Android 4.4                            |
+| Latest Android    | Android 5.1.1                          |
+| Storage           | 16 GB                                  |
+| MicroSD           | 64 GB                                  |
+| Battery           | 4450 mAh                               |
+| Display           | 800x1280 px                            |
+| Rear camera       | 3.1 Mpx                                |
+| Front camera      | 1.2 Mpx                                |
+| Similar devices   | milletlte, matisselte, motorola_thea   |

build.sh

@@ -1,49 +0,0 @@
-#!/usr/bin/env bash
-set -euo pipefail
-
-export ALLOW_NINJA_ENV=true
-export USE_CCACHE=1
-export LD_LIBRARY_PATH=/usr/lib:/usr/lib32
-export LC_ALL=C
-export LANG=C
-export LC_CTYPE=C
-
-# export LOCAL_CFLAGS=-Wno-error
-
-BUILD_DIR="./build"
-PATCH_DIR="./patches"
-MANIFEST_URL="https://github.com/minimal-manifest-twrp/platform_manifest_twrp_omni.git"
-MANIFEST_BRANCH="twrp-5.1"
-DEVICE_TREE_URL="https://git.cfpi-fpsi.eu:8443/rubenslte/twrp_device_samsung_rubenslte"
-KERNEL_URL="https://git.cfpi-fpsi.eu:8443/rubenslte/android_kernel_samsung_rubenslte"
-
-if [ ! -d "${BUILD_DIR}/.repo" ]; then
-    echo "Creating build directory ${BUILD_DIR} and cloning manifest ${MANIFEST_URL} from branch ${MANIFEST_BRANCH}..."
-    mkdir -p "${BUILD_DIR}"
-    cd "${BUILD_DIR}"
-    repo init --depth 1 -u "${MANIFEST_URL}" -b "${MANIFEST_BRANCH}"
-fi
-
-if [ ! -d "${BUILD_DIR}/device/samsung/rubenslte" ]; then
-    echo "Cloning device tree..."
-    git clone "${DEVICE_TREE_URL}" "${BUILD_DIR}/device/samsung/rubenslte"
-fi
-
-if [ ! -d "${BUILD_DIR}/kernel/samsung/rubenslte" ]; then
-    echo "Cloning kernel source..."
-    git clone "${KERNEL_URL}" "${BUILD_DIR}/kernel/samsung/rubenslte"
-fi
-
-for patch in "${PATCH_DIR}/*.patch"; do
-    echo "Applying $(basename "$patch")"
-    (cd "${BUILD_DIR}" && patch -p1 -N -r- < "$patch" 2>/dev/null || true)
-fi
-
-cd "${BUILD_DIR}"
-set +u
-source build/envsetup.sh
-lunch "omni_rubenslte-userdebug"
-set -u
-mka recoveryimage
-
-echo "Build results in ${BUILD_DIR}/out/target/product/rubenslte"

build_twrp.sh

@@ -0,0 +1,49 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+export ALLOW_NINJA_ENV=true USE_CCACHE=1 LD_LIBRARY_PATH=/usr/lib:/usr/lib32 LC_ALL=C LANG=C LC_CTYPE=C
+
+cd "$(realpath "$(dirname "${BASH_SOURCE[0]}")")"
+SCRIPT="$PWD"
+
+mkdir -p twrp-build
+cd twrp-build
+
+if [ ! -d .repo ]; then
+    repo init --depth 1 -u https://github.com/minimal-manifest-twrp/platform_manifest_twrp_omni.git -b twrp-5.1
+fi
+
+repo sync -j$(nproc)
+
+if [ ! -d device/samsung/rubenslte ]; then
+    git clone --depth 1 https://git.cfpi-fpsi.eu/rubenslte/twrp_device_samsung_rubenslte device/samsung/rubenslte
+fi
+
+for p in "$SCRIPT"/patches/*.patch; do
+    patch -p1 -s < "$p" 2>/dev/null || true
+done
+
+export AR="$(command -v ar)"
+export CC="$(command -v gcc)"
+export CXX="$(command -v g++)"
+
+HOST_TOOLCHAIN="prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.11-4.6/bin"
+if [ ! -f "$HOST_TOOLCHAIN/x86_64-linux-ar" ]; then
+    mkdir -p "$HOST_TOOLCHAIN"
+    for tool in ar gcc g++; do
+        src="$(command -v $tool)"
+        if [ -n "$src" ]; then
+            ln -sf "$src" "$HOST_TOOLCHAIN/x86_64-linux-$tool"
+        fi
+    done
+fi
+
+export TOP="$PWD"
+set +u
+source build/envsetup.sh
+lunch omni_rubenslte-userdebug
+set -u
+mka recoveryimage
+
+cp out/target/product/rubenslte/recovery.img "$SCRIPT"
+echo "Done: $SCRIPT/recovery.img"

clean.sh

@@ -0,0 +1,6 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+cd "$(realpath "$(dirname "${BASH_SOURCE[0]}")")"
+
+rm -rf twrp-build recovery.img