From 28b5dc9456ca499c8ff3568b91e5d761c3b7ee0e Mon Sep 17 00:00:00 2001
From: Witold Filipczyk <witekfl@poczta.onet.pl>
Date: Sat, 27 May 2023 22:07:11 +0200
Subject: [PATCH] [configure.ac] --with-libsixel

---
 Makefile.config.in    |  1 +
 configure.ac          | 33 +++++++++++++++++++++++++++++++++
 src/terminal/Makefile |  1 +
 3 files changed, 35 insertions(+)

diff --git a/Makefile.config.in b/Makefile.config.in
index 1d96ce8e..4de06357 100644
--- a/Makefile.config.in
+++ b/Makefile.config.in
@@ -150,6 +150,7 @@ CONFIG_DBLATEX = @CONFIG_DBLATEX@
 CONFIG_LEDS = @CONFIG_LEDS@
 CONFIG_LIBCSS = @CONFIG_LIBCSS@
 CONFIG_LIBDOM = @CONFIG_LIBDOM@
+CONFIG_LIBSIXEL = @CONFIG_LIBSIXEL@
 CONFIG_LZMA = @CONFIG_LZMA@
 CONFIG_MAILCAP = @CONFIG_MAILCAP@
 CONFIG_MANUAL = @CONFIG_MANUAL@
diff --git a/configure.ac b/configure.ac
index 4000ff3a..8f4765d5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -895,6 +895,39 @@ if test "x$CONFIG_LIBDOM" = xyes; then
 	AC_SUBST(CONFIG_LIBDOM)
 fi
 
+# ===================================================================
+# Check for libsixel
+# ===================================================================
+
+AC_ARG_WITH([libsixel],
+	[AS_HELP_STRING([--with-libsixel],
+		[enable sixel graphics])])
+
+CONFIG_LIBSIXEL=
+
+case "$with_libsixel" in
+	"" | no)
+		# The user specified --without-libsixel.
+		AC_MSG_CHECKING([for libsixel])
+		AC_MSG_RESULT([disabled])
+		CONFIG_LIBSIXEL="no"
+		;;
+	yes)
+		;;
+	*)
+		;;
+esac
+
+if test "x$CONFIG_LIBSIXEL" = x; then
+	LIBSIXEL_CFLAGS="$($PKG_CONFIG $pkg_config_static --cflags libsixel)"
+	LIBSIXEL_LIBS="$($PKG_CONFIG $pkg_config_static --libs libsixel)"
+	LIBS="$LIBSIXEL_LIBS $LIBS"
+	CFLAGS="$CFLAGS $LIBSIXEL_CFLAGS"
+	CONFIG_LIBSIXEL=yes
+	EL_CONFIG(CONFIG_LIBSIXEL, [libsixel])
+	AC_SUBST(CONFIG_LIBSIXEL)
+fi
+
 # ===================================================================
 # Check for Guile, optional even if installed.
 # ===================================================================
diff --git a/src/terminal/Makefile b/src/terminal/Makefile
index 32c64e75..31966da6 100644
--- a/src/terminal/Makefile
+++ b/src/terminal/Makefile
@@ -2,6 +2,7 @@ top_builddir=../..
 include $(top_builddir)/Makefile.config
 
 OBJS-$(CONFIG_MOUSE) += mouse.o
+OBJS-$(CONFIG_LIBSIXEL) += sixel.o
 OBJS-$(CONFIG_TERMINFO) += terminfo.o
 
 OBJS = \