[PATCH 1/5] build: add support for libinih for mkfs

[Dave Chinner <david@fromorbit.com>]

From: Dave Chinner <dchinner@redhat.com>

Need to make sure the library is present so we can build mkfs with
config file support.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
---
 configure.ac         |  3 +++
 doc/INSTALL          |  5 +++++
 include/builddefs.in |  1 +
 m4/package_inih.m4   | 20 ++++++++++++++++++++
 4 files changed, 29 insertions(+)
 create mode 100644 m4/package_inih.m4

diff --git a/configure.ac b/configure.ac
index 4674673ed67c..dc57bbd7cd8c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -145,6 +145,9 @@ AC_PACKAGE_UTILITIES(xfsprogs)
 AC_MULTILIB($enable_lib64)
 AC_RT($enable_librt)
 
+AC_PACKAGE_NEED_INI_H
+AC_PACKAGE_NEED_LIBINIH
+
 AC_PACKAGE_NEED_UUID_H
 AC_PACKAGE_NEED_UUIDCOMPARE
 
diff --git a/doc/INSTALL b/doc/INSTALL
index d4395eefa834..2b04f9cfe108 100644
--- a/doc/INSTALL
+++ b/doc/INSTALL
@@ -28,6 +28,11 @@ Linux Instructions
    (on an RPM based system) or the uuid-dev package (on a Debian system)
    as some of the commands make use of the UUID library provided by these.
 
+   If your distro does not provide a libinih package, you can download and build
+   it from source from the upstream repository found at:
+
+	https://github.com/benhoyt/inih
+
    To build the package and install it manually, use the following steps:
 
 	# make
diff --git a/include/builddefs.in b/include/builddefs.in
index 30b2727a8db4..e8f447f92baf 100644
--- a/include/builddefs.in
+++ b/include/builddefs.in
@@ -27,6 +27,7 @@ LIBTERMCAP = @libtermcap@
 LIBEDITLINE = @libeditline@
 LIBBLKID = @libblkid@
 LIBDEVMAPPER = @libdevmapper@
+LIBINIH = @libinih@
 LIBXFS = $(TOPDIR)/libxfs/libxfs.la
 LIBFROG = $(TOPDIR)/libfrog/libfrog.la
 LIBXCMD = $(TOPDIR)/libxcmd/libxcmd.la
diff --git a/m4/package_inih.m4 b/m4/package_inih.m4
new file mode 100644
index 000000000000..a2775592e09d
--- /dev/null
+++ b/m4/package_inih.m4
@@ -0,0 +1,20 @@
+AC_DEFUN([AC_PACKAGE_NEED_INI_H],
+  [ AC_CHECK_HEADERS([ini.h])
+    if test $ac_cv_header_ini_h = no; then
+	echo
+	echo 'FATAL ERROR: could not find a valid ini.h header.'
+	echo 'Install the libinih development package.'
+	exit 1
+    fi
+  ])
+
+AC_DEFUN([AC_PACKAGE_NEED_LIBINIH],
+  [ AC_CHECK_LIB(inih, ini_parse,, [
+	echo
+	echo 'FATAL ERROR: could not find a valid inih library.'
+	echo 'Install the libinih library package.'
+	exit 1
+    ])
+    libinih=-linih
+    AC_SUBST(libinih)
+  ])
-- 
2.28.0