[OSS-Tools] [PATCH platsch 1/3] convert to meson build

[LI Qingwu <Qing-wu.Li@leica-geosystems.com.cn>]

Signed-off-by: LI Qingwu <Qing-wu.Li@leica-geosystems.com.cn>
---
 Makefile.am       | 29 -----------------------------
 README.rst        | 27 +++++++++++++++++++++++++++
 cairo.c           |  4 ++--
 configure.ac      | 32 --------------------------------
 meson.build       | 26 ++++++++++++++++++++++++++
 meson_options.txt |  1 +
 6 files changed, 56 insertions(+), 63 deletions(-)
 delete mode 100644 Makefile.am
 delete mode 100644 configure.ac
 create mode 100644 meson.build
 create mode 100644 meson_options.txt

diff --git a/Makefile.am b/Makefile.am
deleted file mode 100644
index d486994..0000000
--- a/Makefile.am
+++ /dev/null
@@ -1,29 +0,0 @@
-EXTRA_DIST = README.rst LICENSE
-
-sbin_PROGRAMS = platsch
-
-platsch_SOURCES = platsch.c
-platsch_CFLAGS = $(LIBDRM_CFLAGS)
-platsch_LDADD = $(LIBDRM_LIBS)
-
-if ENABLE_CAIRO
-platsch_SOURCES += cairo.c
-platsch_CFLAGS += $(CAIRO_CFLAGS)
-platsch_LDADD += $(CAIRO_LIBS)
-endif
-
-CLEANFILES = \
-        $(DIST_ARCHIVES)
-
-DISTCLEAN = \
-        config.log \
-        config.status \
-        Makefile
-
-MAINTAINERCLEANFILES = \
-	aclocal.m4 \
-	configure \
-	depcomp \
-	install-sh \
-	Makefile.in \
-	missing
diff --git a/README.rst b/README.rst
index e318120..2af29e4 100644
--- a/README.rst
+++ b/README.rst
@@ -141,3 +141,30 @@ By adding a Signed-off-by line (e.g. using ``git commit -s``) saying::
 
 (using your real name and e-mail address), you state that your contributions
 are in line with the DCO.
+
+Cross compiling instructions
+----------------------------
+
+To cross-compile the project, use the following commands:
+
+.. code-block:: shell
+
+    meson build --cross-file=<path-to-meson-cross-file>
+    ninja -C build
+
+Build options
+-------------
+
+The following build options are available:
+
+.. list-table::
+   :header-rows: 1
+
+   * - Option name
+     - Values
+     - Default
+     - Notes
+   * - HAVE_CAIRO
+     - true, false
+     - true
+     - Enable Cairo support
diff --git a/cairo.c b/cairo.c
index d29b3a4..8ced3b2 100644
--- a/cairo.c
+++ b/cairo.c
@@ -79,7 +79,7 @@ static const char *image_format_to_string(cairo_format_t format)
 		return "RGB128F";
 #endif
 	case CAIRO_FORMAT_INVALID:
-	defaul:
+	default:
 		return "invalid";
 	}
 }
@@ -90,7 +90,6 @@ static int png_import_backend_import_picture(cairo_t *cr, const char *filename)
 	cairo_format_t image_fmt, surface_fmt;
 	cairo_surface_t *image, *surface;
 	cairo_status_t status;
-	cairo_format_t format;
 	int ret = 0;
 
 	image = cairo_image_surface_create_from_png(filename);
@@ -253,6 +252,7 @@ static uint32_t convert_to_cairo_format(uint32_t format)
 	case DRM_FORMAT_XRGB8888:
 		return CAIRO_FORMAT_ARGB32;
 	}
+	return CAIRO_FORMAT_INVALID;
 }
 
 static cairo_t *cairo_init(struct modeset_dev *dev, const char *dir, const char *base)
diff --git a/configure.ac b/configure.ac
deleted file mode 100644
index 11cdded..0000000
--- a/configure.ac
+++ /dev/null
@@ -1,32 +0,0 @@
-AC_PREREQ([2.69])
-AC_INIT([platsch], [2019.12.0], [oss-tools@pengutronix.de])
-AC_CONFIG_SRCDIR([platsch.c])
-AM_INIT_AUTOMAKE([foreign dist-xz])
-
-AC_PROG_CC
-AC_PROG_MAKE_SET
-
-PKG_CHECK_MODULES([LIBDRM], [libdrm >= 2.4.112])
-
-AC_ARG_ENABLE([cairo],
-  [AS_HELP_STRING([--disable-cairo],
-    [Enable CAIRO support @<:@default=check@:>@])],
-  [],
-  [enable_cairo=check])
-
-AS_IF([test "$enable_cairo" != "no"],
-  [PKG_CHECK_MODULES([CAIRO],
-    [cairo >= 1.0],
-    [enable_cairo=yes
-     AC_DEFINE(HAVE_CAIRO)],
-    [AS_IF([test "$enable_cairo" = "yes"],
-      [AC_MSG_ERROR([cairo required, but not found.])],
-      [enable_cairo=no])
-    ])
-  ])
-
-AM_CONDITIONAL([ENABLE_CAIRO], [test "$enable_cairo" = "yes"])
-
-AC_CONFIG_FILES([Makefile])
-
-AC_OUTPUT
diff --git a/meson.build b/meson.build
new file mode 100644
index 0000000..e7e8e80
--- /dev/null
+++ b/meson.build
@@ -0,0 +1,26 @@
+project('platsch', 'c')
+
+# Define dependencies conditionally based on the HAVE_CAIRO option
+platsch_dep = [dependency('libdrm', required: true)]
+sources = ['platsch.c']
+args = []
+
+have_cairo = get_option('HAVE_CAIRO')
+
+if have_cairo
+    platsch_dep += dependency('cairo', required: true)
+    sources += 'cairo.c'
+    args += ['-DHAVE_CAIRO']
+endif
+
+# Define the headers
+headers = ['platsch.h']
+
+# Create the platsch executable
+executable('platsch',
+    sources,
+    dependencies: platsch_dep,
+    c_args: args,
+    install: true,
+    include_directories: include_directories('.')
+)
diff --git a/meson_options.txt b/meson_options.txt
new file mode 100644
index 0000000..1adfef3
--- /dev/null
+++ b/meson_options.txt
@@ -0,0 +1 @@
+option('HAVE_CAIRO', type: 'boolean', value: true, description: 'Enable Cairo support')
-- 
2.34.1