Add a variable for the temp directory

archive.mk

@@ -27,7 +27,7 @@ $(archive_script) $(1)
 endef
 else
 define archive_issues
-old_archive=$$(mktemp /tmp/archive-old.XXXXXX); \
+old_archive=$$(mktemp $(TMPDIR)/tmp/archive-old.XXXXXX); \
 trap 'rm -f $$old_archive' EXIT; \
 git show $(ARCHIVE_BRANCH):$(1) > $$old_archive || true; \
 echo $(archive_script) $(1) --reference $$old_archive; \
@@ -55,7 +55,7 @@ archive.json: fetch-archive $(drafts_source) $(DEPS_FILES)
 	fi; \
 	$(call archive_issues,$@)
 
-ARCHIVE_ROOT := /tmp/gharchive$(PID)
+ARCHIVE_ROOT := $(TMPDIR)/gharchive$(PID)
 $(ARCHIVE_ROOT): fetch-archive
 	@git show-ref refs/heads/$(ARCHIVE_BRANCH) >/dev/null 2>&1 || \
 	  (git show-ref refs/remotes/origin/$(ARCHIVE_BRANCH) >/dev/null 2>&1 && \

build-index.sh

@@ -13,6 +13,7 @@ repo="${6:-<repo>}"
 default_branch="${DEFAULT_BRANCH:-$("$(dirname "$0")/default-branch.py")}"
 branch="${3:-$default_branch}"
 libdir="${LIBDIR:-"$(realpath "$(dirname "$0")")"}"
+TMPDIR="${TMPDIR:-/tmp}"
 [[ -n "$VENV" ]] && python="${python:-"${VENV}/python"}"
 python="${python:-python3}"
 shift 6
@@ -249,7 +250,7 @@ function list_dir() {
         [[ -n "${src##*:}" ]] || \
             src="origin/${branch}:$(git ls-tree --name-only "origin/$branch" -- "$file".md "$file".xml 2>/dev/null | head -1)"
         if [[ -n "${src##*:}" ]]; then
-            tmp="$(mktemp "/tmp/build-index$$-XXXXXX").${src##*.}"
+            tmp="$(mktemp "${TMPDIR}/build-index$$-XXXXXX").${src##*.}"
             tmpfiles+=("$tmp")
             git show "$src" >"$tmp"
             src="$tmp"

config.mk

@@ -72,6 +72,9 @@ trace := $(LIBDIR)/trace.sh
 # Where versioned copies are stored.
 VERSIONED ?= versioned
 
+# We can blame this one on some weird configuration.
+TMPDIR ?= /tmp
+
 # Set this to "true" to disable caching where possible.
 DISABLE_CACHE ?= false
 ifeq (true,$(DISABLE_CACHE))

ghpages.mk

@@ -55,7 +55,7 @@ endif
 fetch-ghpages:
 	git fetch -qf origin ${PAGES_BRANCH}:${PAGES_BRANCH}
 
-GHPAGES_ROOT := /tmp/ghpages$(PID)
+GHPAGES_ROOT := $(TMPDIR)/ghpages$(PID)
 ghpages: $(GHPAGES_ROOT)
 $(GHPAGES_ROOT): fetch-ghpages
 	@git show-ref refs/heads/${PAGES_BRANCH} >/dev/null 2>&1 || \

setup-branch.sh

@@ -5,6 +5,7 @@ set -e
 hash realpath 2>/dev/null || function realpath() { cd "$1"; pwd -P; }
 
 branch="$1"
+TMPDIR="${TMPDIR:-/tmp}"
 shift
 
 # Fetch here, but don't abort on failure.
@@ -14,7 +15,7 @@ if git show-ref -s "$branch" >/dev/null 2>&1; then
     exit
 fi
 
-tmp=$(mktemp -d /tmp/init-branch-"$branch"-XXXXX)
+tmp=$(mktemp -d "${TMPDIR}/init-branch-${branch}-XXXXX")
 function cleanup() {
     rm -rf "$tmp"
 }