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shell_find_runfiles = """
# --- begin runfiles.bash initialization ---
# Copy-pasted from Bazel's Bash runfiles library (tools/bash/runfiles/runfiles.bash).
set -euo pipefail
if [[ ! -d "${RUNFILES_DIR:-/dev/null}" && ! -f "${RUNFILES_MANIFEST_FILE:-/dev/null}" ]]; then
if [[ -f "$0.runfiles_manifest" ]]; then
export RUNFILES_MANIFEST_FILE="$0.runfiles_manifest"
elif [[ -f "$0.runfiles/MANIFEST" ]]; then
export RUNFILES_MANIFEST_FILE="$0.runfiles/MANIFEST"
elif [[ -f "$0.runfiles/bazel_tools/tools/bash/runfiles/runfiles.bash" ]]; then
export RUNFILES_DIR="$0.runfiles"
fi
fi
if [[ -f "${RUNFILES_DIR:-/dev/null}/bazel_tools/tools/bash/runfiles/runfiles.bash" ]]; then
source "${RUNFILES_DIR}/bazel_tools/tools/bash/runfiles/runfiles.bash"
elif [[ -f "${RUNFILES_MANIFEST_FILE:-/dev/null}" ]]; then
source "$(grep -m1 "^bazel_tools/tools/bash/runfiles/runfiles.bash " \
"$RUNFILES_MANIFEST_FILE" | cut -d ' ' -f 2-)"
else
echo >&2 "ERROR: cannot find @bazel_tools//tools/bash/runfiles:runfiles.bash"
exit 1
fi
# --- end runfiles.bash initialization ---
"""
def _librule(name):
return name + "_lib"
def lua_cclibrary(name, srcs, hdrs = [], deps = [], luadeps = []):
lib_rule = name + "_lib"
so_rule = "lib" + name + ".so"
so_file = _remove_prefix(name, "lua/") + ".so"
native.cc_library(
name = _librule(name),
hdrs = hdrs,
srcs = srcs,
deps = deps + [_librule(dep) for dep in luadeps] + ["@lua//:liblua_headers"],
)
native.cc_binary(
name = so_rule,
linkshared = True,
deps = [_librule(name)],
)
native.genrule(
name = name + "_copy",
srcs = [":" + so_rule],
outs = [so_file],
cmd = "cp $< $@",
)
native.filegroup(
name = name,
data = [so_file],
)
def _remove_prefix(str, prefix):
if not str.startswith(prefix):
fail("%s doesn't start with %s" % (str, prefix))
return str[len(prefix):]
def lua_library(name, srcs, base, luadeps = []):
outs = [_remove_prefix(src, base + "/") for src in srcs]
native.genrule(
name = name + "_copy",
srcs = srcs,
outs = outs,
cmd = "cp $(SRCS) $(@D)",
)
native.filegroup(
name = name,
data = outs + luadeps,
)
def lua_binary(name, main, luadeps=[]):
script = name + ".sh"
script_contents = (shell_find_runfiles + """
BASE=$(dirname $(rlocation upb/upb_c.so))
export LUA_CPATH="$BASE/?.so"
export LUA_PATH="$BASE/?.lua"
$(rlocation lua/lua) $(rlocation upb/tools/upbc.lua) "$@"
""").replace("$", "$$")
print(native.repository_name())
native.genrule(
name = "gen_" + name,
outs = [script],
cmd = "(cat <<'HEREDOC'\n%s\nHEREDOC\n) > $@" % script_contents,
)
native.sh_binary(
name = name,
srcs = [script],
data = ["@lua//:lua", "@bazel_tools//tools/bash/runfiles", main] + luadeps,
)
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