python_lx_init/python_install.sh at main · DSchmidt96/python_lx_init · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
#!/usr/bin/env bash
set -euo pipefail

# -----------------------------------------------------------------------------
# Logging
# -----------------------------------------------------------------------------
# LOG_DIR="/var/log/foxorepo"
# LOG_FILE="$LOG_DIR/install-$(date +%Y%m%d-%H%M%S).log"
# mkdir -p "$LOG_DIR"
# exec > >(tee -a "$LOG_FILE") 2>&1

log()  { echo "[INFO ] $(date '+%F %T') $*"; }
warn() { echo "[WARN ] $(date '+%F %T') $*"; }
die()  { echo "[ERROR] $(date '+%F %T') $*" >&2; exit 1; }

trap 'die "Script failed at line $LINENO"' ERR

# -----------------------------------------------------------------------------
# Configuration
# -----------------------------------------------------------------------------
RUN_DIR=$(dirname "$0")
PY_ROOT_DIR="$1" # eg. /opt/python
PY_VER="$2" # eg. 3.13.9


PY_NAME="Python-$PY_VER"
PY_TAR_NAME="$PY_NAME.tgz"
PY_DOWNLOAD_URL="https://www.python.org/ftp/python/$PY_VER/$PY_TAR_NAME"
PY_INSTALL_DIR="$PY_ROOT_DIR/$PY_NAME"
PY_TARGET="$PY_INSTALL_DIR/bin/python3"
PY_INSTALL_WORKDIR="$PY_ROOT_DIR/$PY_NAME-build"
PY_INSTALL_WORKDIR_EXTRACT="$PY_INSTALL_WORKDIR/$PY_NAME"
PY_INSTALL_TAR="$PY_INSTALL_WORKDIR/$PY_TAR_NAME"
PY_LOCAL_TAR="$RUN_DIR/$PY_TAR_NAME"

# -----------------------------------------------------------------------------
# Install build dependencies
# -----------------------------------------------------------------------------
log "Installing build dependencies via apt"

APT_PKGS=(
	build-essential
	make
	gcc
	git
	curl
	ca-certificates
	zlib1g-dev
	libssl-dev
	libffi-dev
	libbz2-dev
	libreadline-dev
	libsqlite3-dev
	liblzma-dev
	libncurses-dev
	uuid-dev
	tk-dev
)

missing_pkgs=()
for pkg in "${APT_PKGS[@]}"; do
	if ! dpkg -s "$pkg" >/dev/null 2>&1; then
		missing_pkgs+=("$pkg")
	fi
done

if [[ ${#missing_pkgs[@]} -gt 0 ]]; then
	log "Missing apt packages: ${missing_pkgs[*]}"
	sudo apt-get update -y
	sudo apt-get install -y "${missing_pkgs[@]}"
else
	log "All apt packages already installed - skipping"
fi

log "Build dependencies installed"

# -----------------------------------------------------------------------------
# Download Python source tarball, if needed
# -----------------------------------------------------------------------------
mkdir -p "$PY_INSTALL_WORKDIR"

if [[ -f "$PY_LOCAL_TAR" ]] && [[ ! -f "$PY_INSTALL_TAR" ]]; then
	log "Copying Python tarball from $PY_LOCAL_TAR to $PY_INSTALL_TAR"
	cp "$PY_LOCAL_TAR" "$PY_INSTALL_TAR"
fi

if [[ ! -f "$PY_INSTALL_TAR" ]]; then
	log "Downloading Python source: $PY_DOWNLOAD_URL"
	curl -fL --retry 5 --retry-delay 2 -o "$PY_INSTALL_TAR" "$PY_DOWNLOAD_URL"
else
	log "Python tarball exists: $PY_INSTALL_TAR"
fi

# -----------------------------------------------------------------------------
# Build and install Python (does NOT replace system python)
# -----------------------------------------------------------------------------
if [[ ! -x "$PY_TARGET" ]]; then
	cd $PY_INSTALL_WORKDIR
	log "Extracting $PY_TAR_NAME"
	rm -rf "$PY_INSTALL_WORKDIR_EXTRACT"
	tar -xzf "$PY_INSTALL_TAR"

	cd "$PY_INSTALL_WORKDIR_EXTRACT"

	log "Configuring Python build"
	./configure \
		--prefix="$PY_INSTALL_DIR" \
		--enable-optimizations \
		--with-ensurepip=install

	log "Compiling Python"
	make -j"$(nproc)"

	log "Installing Python into $PY_INSTALL_DIR"
	sudo make install
else
	warn "Python already installed at $PY_INSTALL_DIR - skipping build"
fi

cd "$PY_INSTALL_DIR"
log "Python version: $("$PY_TARGET" --version)"