From: Matthew Fernandez <matthew.fernandez@gmail.com>
Date: Fri, 6 May 2022 00:17:11 +0000 (-0700)
Subject: only append 'generic' TCL include path to 'TCL_INCLUDES' if it exists
X-Git-Tag: 4.0.0~43^2
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=30f5e6535f21ca671d76159b49cc87add1f0b53e;p=graphviz

only append 'generic' TCL include path to 'TCL_INCLUDES' if it exists

Squashes numerous -Wmissing-include-dirs compilation warnings.
---

diff --git a/configure.ac b/configure.ac
index 450b03577..64002620a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1384,6 +1384,9 @@ if test "x$use_tcl" = "x"; then
 
   if test -f ${TCLSH_EXEC_PREFIX}/include/tcl${TCL_VERSION_FOUND}/tcl.h; then
     TCL_INCLUDES="-I${TCLSH_EXEC_PREFIX}/include/tcl${TCL_VERSION_FOUND} -I${TCLSH_EXEC_PREFIX}/include/tcl${TCL_VERSION_FOUND}/generic"
+    if test -d ${TCLSH_EXEC_PREFIX}/include/tcl${TCL_VERSION_FOUND}/generic; then
+      TCL_INCLUDES="${TCL_INCLUDES} -I${TCLSH_EXEC_PREFIX}/include/tcl${TCL_VERSION_FOUND}/generic"
+    fi
   else
     if test "x${TCLSH_EXEC_PREFIX}" != "x/usr" -a -f ${TCLSH_EXEC_PREFIX}/include/tcl.h; then
       TCL_INCLUDES=-I${TCLSH_EXEC_PREFIX}/include