OpenJFX-10 can not be built on linux with gcc 6 (Ubuntu 17.04):
gcc (Ubuntu 6.3.0-12ubuntu2) 6.3.0 20170406

Many C++ warnings are considered as errors (-Werror flag) and the function wait() is no more available.

Here is the patch I quickly made to have a successfully build:
1. Disable -Werror
--- /tmp/meld-tmpg58KiV
+++ /home/bourgesl/libs/graphics-rasterizer/openjfx/openjfx10/buildSrc/linux.gradle
@@ -194,7 +194,9 @@
 LINUX.glass.glass = [:]
 LINUX.glass.glass.nativeSource = ft_gtk_launcher.getFiles()
 LINUX.glass.glass.compiler = compiler
-LINUX.glass.glass.ccFlags = [ccFlags, gtk2CCFlags, "-Werror"].flatten()
+LINUX.glass.glass.ccFlags = [ccFlags, gtk2CCFlags].flatten()
 LINUX.glass.glass.linker = linker
 LINUX.glass.glass.linkFlags = [linkFlags, "-lX11", "-ldl" ].flatten()
 LINUX.glass.glass.lib = "glass"

2. Fix wait() call:
--- /tmp/meld-tmpdJrWdz
+++ /home/bourgesl/libs/graphics-rasterizer/openjfx/openjfx10/modules/jdk.packager/src/main/native/library/common/PosixPlatform.cpp
@@ -46,6 +46,7 @@
 #include <sys/sysctl.h>
 #include <sys/file.h>
 #include <sys/stat.h>
+#include <sys/wait.h>
 #include <errno.h>
 #include <limits.h>
 #include <pwd.h>
@@ -370,7 +371,7 @@
     pid_t wpid = 0;
 
 #ifdef LINUX
- wait();
+ wait(&status);
 #endif
 #ifdef MAC
     wpid = wait(&status);