From 6cf878f69e15c6414dda4fb1171db244953bf8a4 Mon Sep 17 00:00:00 2001
From: Guilhem Moulin <guilhem@fripost.org>
Date: Tue, 22 Feb 2022 23:21:58 +0100
Subject: Makefile: Honor srcdir=.

Cf. https://www.gnu.org/prep/standards/html_node/Directory-Variables.html .
---
 Makefile | 51 ++++++++++++++++++++++++++-------------------------
 1 file changed, 26 insertions(+), 25 deletions(-)

diff --git a/Makefile b/Makefile
index 9f4702d..0324d65 100644
--- a/Makefile
+++ b/Makefile
@@ -1,10 +1,11 @@
+srcdir ?= .
 DESTDIR ?= /usr/local
-BUILD_DOCDIR ?= ./doc
+BUILD_DOCDIR ?= $(srcdir)/doc
 CSS ?= /usr/share/javascript/bootstrap4/css/bootstrap.css
-HTML_TEMPLATE ?= ./doc/template.html
+HTML_TEMPLATE ?= $(srcdir)/doc/template.html
 
-HTML_FILES = $(addprefix $(BUILD_DOCDIR)/,$(patsubst ./doc/%.md,%.html,$(wildcard ./doc/*.md)))
-MANUAL_FILES = $(addprefix $(BUILD_DOCDIR)/,$(patsubst ./doc/%.md,%,$(wildcard ./doc/*.[1-9].md)))
+HTML_FILES = $(addprefix $(BUILD_DOCDIR)/,$(patsubst $(srcdir)/doc/%.md,%.html,$(wildcard $(srcdir)/doc/*.md)))
+MANUAL_FILES = $(addprefix $(BUILD_DOCDIR)/,$(patsubst $(srcdir)/doc/%.md,%,$(wildcard $(srcdir)/doc/*.[1-9].md)))
 
 all: manual
 
@@ -12,34 +13,34 @@ manual: $(MANUAL_FILES)
 html: $(HTML_FILES)
 
 # upper case the headers and remove the links
-$(MANUAL_FILES): $(BUILD_DOCDIR)/%: ./doc/%.md
-	pandoc -f markdown -t json -- "$<" | ./pandoc2man.jq | pandoc -s -f json -t man -o "$@"
+$(MANUAL_FILES): $(BUILD_DOCDIR)/%: $(srcdir)/doc/%.md
+	pandoc -f markdown -t json -- "$<" | $(srcdir)/pandoc2man.jq | pandoc -s -f json -t man -o "$@"
 
 test:
-	./tests/certs/generate
-	./tests/run-all
+	$(srcdir)/tests/certs/generate
+	$(srcdir)/tests/run-all
 
 release:
-	@if ! git diff HEAD --quiet -- ./Changelog ./interimap ./pullimap ./lib/Net/IMAP/InterIMAP.pm; then \
+	@if ! git -C $(srcdir) diff --quiet HEAD -- Changelog interimap pullimap lib/Net/IMAP/InterIMAP.pm; then \
 		echo "Dirty state, refusing to release!" >&2; \
 		exit 1; \
 	fi
-	VERS=$$(dpkg-parsechangelog -l Changelog -SVersion 2>/dev/null) && \
-		if git rev-parse -q --verify "refs/tags/v$$VERS" >/dev/null; then echo "tag exists" 2>/dev/null; exit 1; fi && \
-		sed -ri "0,/^( -- .*)  .*/ s//\\1  $(shell date -R)/" ./Changelog && \
+	VERS=$$(dpkg-parsechangelog -l $(srcdir)/Changelog -SVersion 2>/dev/null) && \
+		if git -C $(srcdir) rev-parse -q --verify "refs/tags/v$$VERS" >/dev/null; then echo "tag exists" 2>/dev/null; exit 1; fi && \
+		sed -ri "0,/^( -- .*)  .*/ s//\\1  $(shell date -R)/" $(srcdir)/Changelog && \
 		sed -ri "0,/^(our\\s+\\\$$VERSION\\s*=\\s*)'[0-9.]+'\\s*;/ s//\\1'$$VERS';/" \
-			-- ./interimap ./pullimap && \
+			-- $(srcdir)/interimap $(srcdir)/pullimap && \
 		sed -ri "0,/^(package\\s+Net::IMAP::InterIMAP\\s+)v[0-9.]+\\s*;/ s//\\1v$$VERS;/" \
-			-- ./lib/Net/IMAP/InterIMAP.pm && \
+			-- $(srcdir)/lib/Net/IMAP/InterIMAP.pm && \
 		sed -ri "0,/^(use\\s+Net::IMAP::InterIMAP\\s+)[0-9.]+(\\s|\\$$)/ s//\\1$$VERS\\2/" \
-			-- ./interimap ./pullimap && \
-		git commit -m "Prepare new release v$$VERS." \
-			-- ./Changelog ./interimap ./pullimap ./lib/Net/IMAP/InterIMAP.pm && \
-		git tag -sm "Release version $$VERS" "v$$VERS"
+			-- $(srcdir)/interimap $(srcdir)/pullimap && \
+		git -C $(srcdir) commit -m "Prepare new release v$$VERS." \
+			-- Changelog interimap pullimap lib/Net/IMAP/InterIMAP.pm && \
+		git -C $(srcdir) tag -sm "Release version $$VERS" "v$$VERS"
 
 ## make html CSS="https://guilhem.org/static/css/bootstrap.min.css" BUILD_DOCDIR="$XDG_RUNTIME_DIR/Downloads"
-$(HTML_FILES): $(BUILD_DOCDIR)/%.html: ./doc/%.md $(HTML_TEMPLATE)
-	mtime="$$(git --no-pager log -1 --pretty="format:%ct" -- "$<" 2>/dev/null)"; \
+$(HTML_FILES): $(BUILD_DOCDIR)/%.html: $(srcdir)/doc/%.md $(HTML_TEMPLATE)
+	mtime="$$(git -C $(srcdir) --no-pager log -1 --pretty="format:%ct" -- "$<" 2>/dev/null)"; \
 	[ -n "$$mtime" ] || mtime="$$(date +%s -r "$<")"; \
 	[ "$<" = "doc/index.md" ] && parent="" || parent="./index.html"; \
 	pandoc -sp -f markdown -t html+smart --css=$(CSS) --template=$(HTML_TEMPLATE) \
@@ -60,12 +61,12 @@ mandir ?= $(datarootdir)/man
 man1dir ?= $(mandir)/man1
 
 install: all
-	install -m0755 -vDt $(bindir) ./interimap ./pullimap
-	install -m0644 -vDT ./lib/Net/IMAP/InterIMAP.pm $(datarootdir)/perl5/Net/IMAP/InterIMAP.pm
+	install -m0755 -vDt $(bindir) $(srcdir)/interimap $(srcdir)/pullimap
+	install -m0644 -vDT $(srcdir)/lib/Net/IMAP/InterIMAP.pm $(datarootdir)/perl5/Net/IMAP/InterIMAP.pm
 	install -m0644 -vDt $(man1dir) $(BUILD_DOCDIR)/interimap.1 $(BUILD_DOCDIR)/pullimap.1
-	install -m0644 -vDt $(datarootdir)/doc/pullimap ./pullimap.sample
-	install -m0644 -vDt $(datarootdir)/doc/interimap ./interimap.sample ./doc/getting-started.md ./doc/multi-account.md README
-	install -m0644 -vDt $(libdir)/systemd/user ./*.service
+	install -m0644 -vDt $(datarootdir)/doc/pullimap $(srcdir)/pullimap.sample
+	install -m0644 -vDt $(datarootdir)/doc/interimap $(srcdir)/interimap.sample $(srcdir)/doc/getting-started.md $(srcdir)/doc/multi-account.md README
+	install -m0644 -vDt $(libdir)/systemd/user $(srcdir)/*.service
 
 uninstall:
 	rm -vf -- $(bindir)/interimap $(man1dir)/interimap.1 $(libdir)/systemd/user/interimap*.service
-- 
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