From 0648b5d06021ca5cacb34df1a8b5119e9d5e3ffe Mon Sep 17 00:00:00 2001
From: Lassi Kortela <lassi@lassi.io>
Date: Mon, 13 Feb 2023 15:43:46 +0200
Subject: [PATCH] Add ./configure --with flags for X11

--with-x11
--with-xt
--with-xaw

All disabled by default, since the code has probably bitrotted.
---
 configure.ac | 83 ++++++++++++++++++++++++++++++++--------------------
 1 file changed, 51 insertions(+), 32 deletions(-)

diff --git a/configure.ac b/configure.ac
index 885db67..131b074 100644
--- a/configure.ac
+++ b/configure.ac
@@ -26,6 +26,24 @@ AC_TYPE_SIZE_T
 # Check whether we are doing a native build
 AM_CONDITIONAL(NATIVE_BUILD, test "${cross_compiling}" = "no")
 
+AC_ARG_WITH([x11],
+            [AS_HELP_STRING([--with-x11],
+              [enable support for libx11])],
+            [],
+            [with_x11=no])
+
+AC_ARG_WITH([xt],
+            [AS_HELP_STRING([--with-xt],
+              [enable support for libxt])],
+            [],
+            [with_xt=no])
+
+AC_ARG_WITH([xaw],
+            [AS_HELP_STRING([--with-xaw],
+              [enable support for libxaw])],
+            [],
+            [with_xaw=no])
+
 AC_CHECK_HEADERS(inttypes.h,
   [STDINT_HEADER="<inttypes.h>"],
   [AC_CHECK_HEADERS(sys/inttypes.h,
@@ -484,48 +502,51 @@ AC_PATH_X
 if test -n "${x_includes}"; then x_cflags="-I${x_includes}"; fi
 if test -n "${x_libraries}"; then x_libs="-I${x_libraries}"; fi
 
-AC_CHECK_LIB(X11, XOpenDisplay,
- [ac_cv_my_have_x11=yes
-  X_CFLAGS="${x_cflags}"
-  X_LIBS="${x_libs} -lX11"],
- [ac_cv_my_have_x11=no],
- [[${x_libs}]])
+ac_cv_my_have_x11=no
+AS_IF([test "x$with_x11" != xno],
+[AC_CHECK_LIB(X11, XOpenDisplay,
+  [ac_cv_my_have_x11=yes
+   X_CFLAGS="${x_cflags}"
+   X_LIBS="${x_libs} -lX11"],
+  [ac_cv_my_have_x11=no],
+  [[${x_libs}]])])
 AM_CONDITIONAL(HAVE_X11, test "${ac_cv_my_have_x11}" = "yes")
 AC_SUBST(X_CFLAGS)
 AC_SUBST(X_LIBS)
 
-if test "${cross_compiling}" = "no"; then
-  AC_CHECK_LIB(Xt, XtFree,
-   [ac_cv_my_have_xt=yes
-    AC_CHECK_LIB(Xmu, XmuDrawLogo,
-     [XT_CFLAGS="${x_cflags}"
-      XT_LIBS="${x_libs} -lXmu -lXt -lSM -lICE -lXext -lX11"],
-     [XT_CFLAGS="${x_cflags}"
-      XT_LIBS="${x_libs} -lXt -lSM -lICE -lXext -lX11"],
-     [[-lXt -lSM -lICE -lXext -lX11 ${x_libs}]])],
-   [ac_cv_my_have_xt=no],
-   [[-lSM -lICE -lXext -lX11 ${x_libs}]])
-else
-  ac_cv_my_have_xt=no
-fi
+ac_cv_my_have_xt=no
+AS_IF([test "x$with_xt" != xno],
+[AC_CHECK_LIB(Xt, XtFree,
+ if test "${cross_compiling}" = "no"; then
+    [ac_cv_my_have_xt=yes
+     AC_CHECK_LIB(Xmu, XmuDrawLogo,
+      [XT_CFLAGS="${x_cflags}"
+       XT_LIBS="${x_libs} -lXmu -lXt -lSM -lICE -lXext -lX11"],
+      [XT_CFLAGS="${x_cflags}"
+       XT_LIBS="${x_libs} -lXt -lSM -lICE -lXext -lX11"],
+      [[-lXt -lSM -lICE -lXext -lX11 ${x_libs}]])],
+    [ac_cv_my_have_xt=no],
+    [[-lSM -lICE -lXext -lX11 ${x_libs}]])
+ fi])
 AM_CONDITIONAL(HAVE_XT, test "${ac_cv_my_have_xt}" = "yes")
 AC_SUBST(XT_CFLAGS)
 AC_SUBST(XT_LIBS)
 
-if test "${cross_compiling}" = "no"; then
-  AC_CHECK_LIB(Xaw, XawTextSearch,
-   [ac_cv_my_have_xaw=yes
-    XAW_CFLAGS="${x_cflags}"
-    XAW_LIBS="${x_libs} -lXaw ${XT_LIBS}"],
-   [ac_cv_my_have_xaw=no],
-   [[${XT_LIBS}]])
-else
-  ac_cv_my_have_xaw="no (cross-compiling)"
-fi
+ac_cv_my_have_xaw=no
+AS_IF([test "x$with_xaw" != xno],
+[if test "${cross_compiling}" = "no"; then
+   AC_CHECK_LIB(Xaw, XawTextSearch,
+    [ac_cv_my_have_xaw=yes
+     XAW_CFLAGS="${x_cflags}"
+     XAW_LIBS="${x_libs} -lXaw ${XT_LIBS}"],
+    [ac_cv_my_have_xaw=no],
+    [[${XT_LIBS}]])
+ fi])
 AM_CONDITIONAL(HAVE_XAW, test "${ac_cv_my_have_xaw}" = "yes")
 AC_SUBST(XAW_CFLAGS)
 AC_SUBST(XAW_LIBS)
 
+ac_cv_my_have_motif=no
 if test "${cross_compiling}" = "no"; then
   AC_CHECK_LIB(Xm, XmStringConcat,
    [ac_cv_my_have_motif=yes
@@ -533,8 +554,6 @@ if test "${cross_compiling}" = "no"; then
     MOTIF_LIBS="${x_libs} -lXm ${XT_LIBS}"],
    [ac_cv_my_have_motif=no],
    [[${XT_LIBS}]])
-else
-  ac_cv_my_have_motif="no (cross-compiling)"
 fi
 AM_CONDITIONAL(HAVE_MOTIF, test "${ac_cv_my_have_motif}" = "yes")
 AC_SUBST(MOTIF_CFLAGS)