[fsverity-utils PATCH 2/2] Generate and install libfsverity.pc

[luca.boccassi@gmail.com]

From: Luca Boccassi <luca.boccassi@microsoft.com>

pkg-config is commonly used by libraries to convey information about
compiler flags and dependencies.
As packagers, we heavily rely on it so that all our tools do the right
thing by default regardless of the environment.

Signed-off-by: Luca Boccassi <luca.boccassi@microsoft.com>
---
 Makefile              | 13 ++++++++++++-
 lib/libfsverity.pc.in | 10 ++++++++++
 scripts/do-release.sh |  2 ++
 3 files changed, 24 insertions(+), 1 deletion(-)
 create mode 100644 lib/libfsverity.pc.in

diff --git a/Makefile b/Makefile
index 122c0a2..07b828f 100644
--- a/Makefile
+++ b/Makefile
@@ -119,6 +119,15 @@ libfsverity.so:libfsverity.so.$(SOVERSION)
 
 DEFAULT_TARGETS += libfsverity.so
 
+# Create the pkg-config file
+libfsverity.pc:
+	sed -e "s|@PREFIX@|$(PREFIX)|" \
+		-e "s|@LIBDIR@|$(LIBDIR)|" \
+		-e "s|@INCDIR@|$(INCDIR)|" \
+		lib/libfsverity.pc.in > $@
+
+DEFAULT_TARGETS += libfsverity.pc
+
 ##############################################################################
 
 #### Programs
@@ -190,11 +199,12 @@ check:fsverity test_programs
 	@echo "All tests passed!"
 
 install:all
-	install -d $(DESTDIR)$(LIBDIR) $(DESTDIR)$(INCDIR) $(DESTDIR)$(BINDIR)
+	install -d $(DESTDIR)$(LIBDIR)/pkgconfig $(DESTDIR)$(INCDIR) $(DESTDIR)$(BINDIR)
 	install -m755 fsverity $(DESTDIR)$(BINDIR)
 	install -m644 libfsverity.a $(DESTDIR)$(LIBDIR)
 	install -m755 libfsverity.so.$(SOVERSION) $(DESTDIR)$(LIBDIR)
 	ln -sf libfsverity.so.$(SOVERSION) $(DESTDIR)$(LIBDIR)/libfsverity.so
+	install -m644 libfsverity.pc $(DESTDIR)$(LIBDIR)/pkgconfig
 	install -m644 include/libfsverity.h $(DESTDIR)$(INCDIR)
 
 uninstall:
@@ -202,6 +212,7 @@ uninstall:
 	rm -f $(DESTDIR)$(LIBDIR)/libfsverity.a
 	rm -f $(DESTDIR)$(LIBDIR)/libfsverity.so.$(SOVERSION)
 	rm -f $(DESTDIR)$(LIBDIR)/libfsverity.so
+	rm -f $(DESTDIR)$(LIBDIR)/pkgconfig/libfsverity.pc
 	rm -f $(DESTDIR)$(INCDIR)/libfsverity.h
 
 help:
diff --git a/lib/libfsverity.pc.in b/lib/libfsverity.pc.in
new file mode 100644
index 0000000..613e9bc
--- /dev/null
+++ b/lib/libfsverity.pc.in
@@ -0,0 +1,10 @@
+prefix=@PREFIX@
+libdir=@LIBDIR@
+includedir=@INCDIR@
+
+Name: libfsverity
+Description: fs-verity library
+Version: 1.2
+Libs: -L${libdir} -lfsverity
+Requires.private: libcrypto
+Cflags: -I${includedir}
diff --git a/scripts/do-release.sh b/scripts/do-release.sh
index 255fc53..352fcf1 100755
--- a/scripts/do-release.sh
+++ b/scripts/do-release.sh
@@ -28,6 +28,8 @@ minor=$(echo "$VERS" | cut -d. -f2)
 sed -E -i -e "/FSVERITY_UTILS_MAJOR_VERSION/s/[0-9]+/$major/" \
 	  -e "/FSVERITY_UTILS_MINOR_VERSION/s/[0-9]+/$minor/" \
 	  include/libfsverity.h
+sed -E -i "/Version:/s/[0-9]+\.[0-9]+/$VERS/" \
+	  lib/libfsverity.pc.in
 git commit -a --signoff --message="v$VERS"
 git tag --sign "v$VERS" --message="$PKG"
 
-- 
2.20.1