diff -rupN rt-8u202-ga.orig/buildSrc/linux.gradle rt-8u202-ga/buildSrc/linux.gradle
--- rt-8u202-ga.orig/buildSrc/linux.gradle	2019-06-03 15:45:22.599465670 +0200
+++ rt-8u202-ga/buildSrc/linux.gradle	2019-06-03 15:50:59.746039363 +0200
@@ -44,8 +44,11 @@ LINUX.library = { name -> return "lib${n
 def commonFlags = [
         "-fno-strict-aliasing", "-fPIC", "-fno-omit-frame-pointer", // optimization flags
         "-fstack-protector",
+        "-Wno-error=cast-function-type","-Wno-error=deprecated-declarations",
         "-W", "-Wall", "-Wno-unused", "-Wno-parentheses", "-Werror=implicit-function-declaration"] // warning flags

+commonFlags.addAll(System.getenv("CFLAGS").trim().replaceAll(" +", " ").split(" "))
+
 if (!IS_64) {
     commonFlags += "-m32"
 }
@@ -60,6 +63,9 @@ def ccFlagsGTK3 = ccFlags
 def linkFlags = ["-static-libgcc", "-static-libstdc++", "-shared", commonFlags,
                  "-z", "relro",
                  "-Wl,--gc-sections"].flatten()
+
+linkFlags.addAll(System.getenv("LDFLAGS").trim().split(" "))
+
 def defaultLinkFlags = linkFlags.flatten()

 def gtk2CCFlags = [  ];
@@ -274,7 +280,7 @@ LINUX.iio.nativeSource = [
 LINUX.iio.compiler = compiler
 LINUX.iio.ccFlags = [ccFlags].flatten()
 LINUX.iio.linker = linker
-LINUX.iio.linkFlags = [linkFlags].flatten()
+LINUX.iio.linkFlags = [linkFlags, "-ljpeg"].flatten()
 LINUX.iio.lib = "javafx_iio"

 LINUX.prismES2 = [:]
@@ -339,5 +345,5 @@ LINUX.media.lib = "ar"
 LINUX.webkit = [:]
 LINUX.webkit.compiler = compiler
 LINUX.webkit.linker = linker
-LINUX.webkit.ccFlags = commonFlags.flatten()
+LINUX.webkit.ccFlags = [commonFlags , "-std=gnu++14", "-fno-lto"].flatten()
 LINUX.webkit.linkFlags = defaultLinkFlags.flatten()
diff -rupN rt-8u202-ga.orig/modules/media/src/main/native/gstreamer/projects/linux/avplugin/Makefile rt-8u202-ga/modules/media/src/main/native/gstreamer/projects/linux/avplugin/Makefile
--- rt-8u202-ga.orig/modules/media/src/main/native/gstreamer/projects/linux/avplugin/Makefile	2019-06-03 15:45:28.772858454 +0200
+++ rt-8u202-ga/modules/media/src/main/native/gstreamer/projects/linux/avplugin/Makefile	2019-06-03 15:52:15.503480874 +0200
@@ -22,7 +22,7 @@ TARGET = $(BUILD_DIR)/lib$(BASE_NAME).so
 OBJBASE_DIR = $(BUILD_DIR)/obj/plugins/avplugin
 endif

-CFLAGS = -fPIC                   \
+CFLAGS := -fPIC                   \
          -Wformat                \
          -Wextra                 \
          -Wformat-security       \
@@ -35,13 +35,8 @@ CFLAGS = -fPIC                   \
          -DGST_DISABLE_LOADSAVE  \
          -DGSTREAMER_LITE \
          -DG_DISABLE_DEPRECATED \
-         -ffunction-sections -fdata-sections
-
-ifeq ($(BUILD_TYPE), Release)
-    CFLAGS += -Os
-else
-    CFLAGS += -g -Wall
-endif
+         -ffunction-sections -fdata-sections \
+         ${CFLAGS}

 INCLUDES= -I../../../plugins                          \
           -I../../../plugins/av                       \
@@ -51,11 +46,12 @@ INCLUDES= -I../../../plugins
           -I$(GLIB_DIR)/glib                          \
           -I$(GLIB_DIR)/gmodule

-LDFLAGS = -L$(BUILD_DIR)    \
+LDFLAGS := -L$(BUILD_DIR)    \
           -z relro          \
           -lgstreamer-lite  \
           -lglib-lite  \
-          -static-libgcc -static-libstdc++ -Wl,--gc-sections
+          -static-libgcc -static-libstdc++ -Wl,--gc-sections \
+          ${LDFLAGS}

 ifneq ($(strip $(LIBAV_DIR)),)
 INCLUDES += -I$(LIBAV_DIR)/include
diff -rupN rt-8u202-ga.orig/modules/media/src/main/native/gstreamer/projects/linux/fxplugins/Makefile rt-8u202-ga/modules/media/src/main/native/gstreamer/projects/linux/fxplugins/Makefile
--- rt-8u202-ga.orig/modules/media/src/main/native/gstreamer/projects/linux/fxplugins/Makefile	2019-06-03 15:45:28.772858454 +0200
+++ rt-8u202-ga/modules/media/src/main/native/gstreamer/projects/linux/fxplugins/Makefile	2019-06-03 15:53:26.784252777 +0200
@@ -19,7 +19,7 @@ DIRLIST = progressbuffer       \

 TARGET = $(BUILD_DIR)/lib$(BASE_NAME).so

-CFLAGS = -fPIC                   \
+CFLAGS := -fPIC                   \
          -Wformat                \
          -Wextra                 \
          -Wformat-security       \
@@ -36,14 +36,8 @@ CFLAGS = -fPIC                   \
          -DGST_DISABLE_GST_DEBUG \
          -DGSTREAMER_LITE \
          -DG_DISABLE_DEPRECATED \
-         -ffunction-sections -fdata-sections
-
-ifeq ($(BUILD_TYPE), Release)
-    CFLAGS += -Os
-else
-    CFLAGS += -g -Wall
-endif
-
+         -ffunction-sections -fdata-sections \
+         ${CFLAGS}

 INCLUDES = -I$(SRCBASE_DIR) \
 	   $(addprefix -I$(SRCBASE_DIR)/,$(DIRLIST)) \
@@ -53,9 +47,10 @@ INCLUDES = -I$(SRCBASE_DIR) \
            -I$(GLIB_DIR)/glib                        \
            -I$(GLIB_DIR)/gmodule

-LDFLAGS = -L$(BUILD_DIR) -lgstreamer-lite -lglib-lite \
+LDFLAGS := -L$(BUILD_DIR) -lgstreamer-lite -lglib-lite \
           -z relro \
-          -static-libgcc -static-libstdc++ -Wl,--gc-sections
+          -static-libgcc -static-libstdc++ -Wl,--gc-sections \
+          ${LDFLAGS}

 ifeq ($(ARCH), x32)
     CFLAGS += -m32
diff -rupN rt-8u202-ga.orig/modules/media/src/main/native/gstreamer/projects/linux/gstreamer-lite/Makefile rt-8u202-ga/modules/media/src/main/native/gstreamer/projects/linux/gstreamer-lite/Makefile
--- rt-8u202-ga.orig/modules/media/src/main/native/gstreamer/projects/linux/gstreamer-lite/Makefile	2019-06-03 15:45:28.772858454 +0200
+++ rt-8u202-ga/modules/media/src/main/native/gstreamer/projects/linux/gstreamer-lite/Makefile	2019-06-03 15:55:03.568631974 +0200
@@ -41,7 +41,7 @@ DIRLIST = gstreamer/gst \

 TARGET = $(BUILD_DIR)/lib$(BASE_NAME).so

-CFLAGS =-fPIC                   \
+CFLAGS :=-fPIC                   \
         -Wformat                \
         -Wextra                 \
         -Wformat-security       \
@@ -56,13 +56,8 @@ CFLAGS =-fPIC                   \
         -DGST_DISABLE_GST_DEBUG \
         -DGST_DISABLE_LOADSAVE  \
         -DG_DISABLE_DEPRECATED   \
-        -ffunction-sections -fdata-sections
-
-ifeq ($(BUILD_TYPE), Release)
-    CFLAGS += -Os
-else
-    CFLAGS += -g -Wall
-endif
+        -ffunction-sections -fdata-sections \
+        ${CFLAGS}

 INCLUDES = -I$(BASE_DIR)/plugins                          \
 	   -I$(SRCBASE_DIR)/projects/build/linux/common   \
@@ -83,9 +78,10 @@ INCLUDES = -I$(BASE_DIR)/plugins
 PACKAGES_INCLUDES := $(shell pkg-config --cflags alsa)
 PACKAGES_LIBS := $(shell pkg-config --libs alsa)

-LDFLAGS = -L$(BUILD_DIR) -lm -lglib-lite $(PACKAGES_LIBS) \
+LDFLAGS := -L$(BUILD_DIR) -lm -lglib-lite $(PACKAGES_LIBS) \
           -z relro \
-          -static-libgcc -static-libstdc++ -Wl,--gc-sections
+          -static-libgcc -static-libstdc++ -Wl,--gc-sections \
+          ${LDFLAGS}

 ifeq ($(ARCH), x32)
     CFLAGS += -m32
diff -rupN rt-8u202-ga.orig/modules/media/src/main/native/jfxmedia/projects/linux/Makefile rt-8u202-ga/modules/media/src/main/native/jfxmedia/projects/linux/Makefile
--- rt-8u202-ga.orig/modules/media/src/main/native/jfxmedia/projects/linux/Makefile	2019-06-03 15:45:28.819525570 +0200
+++ rt-8u202-ga/modules/media/src/main/native/jfxmedia/projects/linux/Makefile	2019-06-03 15:57:02.209910725 +0200
@@ -17,7 +17,7 @@ DIRLIST = jni                \

 TARGET = $(BUILD_DIR)/lib$(BASE_NAME).so

-CFLAGS = -DTARGET_OS_LINUX=1     \
+CFLAGS := -DTARGET_OS_LINUX=1     \
          -D_GNU_SOURCE           \
          -DGST_REMOVE_DEPRECATED \
          -DGST_DISABLE_GST_DEBUG \
@@ -27,7 +27,8 @@ CFLAGS = -DTARGET_OS_LINUX=1     \
          -DJFXMEDIA_JNI_EXPORTS  \
          -DLINUX                 \
          -DG_DISABLE_DEPRECATED  \
-         -ffunction-sections -fdata-sections
+         -ffunction-sections -fdata-sections \
+         ${CFLAGS}

 CPPFLAGS = -fno-rtti -ffunction-sections -fdata-sections

@@ -57,21 +58,16 @@ ifdef HOST_COMPILE
 	           -I$(GLIB_LITE_DIR)/glib \
 	           -I$(GLIB_LITE_DIR)/gmodule

-	LDFLAGS = -Wl,-rpath,\$$ORIGIN -L$(BUILD_DIR) -lgstreamer-lite -lglib-lite \
+LDFLAGS := -Wl,-rpath,\$$ORIGIN -L$(BUILD_DIR) -lgstreamer-lite -lglib-lite \
             -z relro \
-            -static-libgcc -static-libstdc++ -Wl,--gc-sections
+            -static-libgcc -static-libstdc++ -Wl,--gc-sections \
+            ${LDFLAGS}
 else
 	CFLAGS += $(EXTRA_CFLAGS)
 	INCLUDES = $(BASE_INCLUDES)
 	LDFLAGS = -Wl,-rpath,\$$ORIGIN -L$(BUILD_DIR) $(EXTRA_LDFLAGS)
 endif

-ifeq ($(BUILD_TYPE), Release)
-	CFLAGS += -Os
-else
-	CFLAGS += -g -Wall -D_DEBUG
-endif
-
 ifeq ($(ARCH), x32)
     CFLAGS += -m32
     LDFLAGS += -m32
--- rt-8u202-ga.orig/modules/media/src/main/native/gstreamer/projects/linux/glib-lite/Makefile	2019-06-04 07:44:53.882738260 +0000
+++ rt-8u202-ga/modules/media/src/main/native/gstreamer/projects/linux/glib-lite/Makefile	2019-06-04 07:47:36.024744987 +0000
@@ -40,20 +40,15 @@ CFLAGS += -fPIC \
          -DMATCH_LIMIT=10000000 \
          -DMATCH_LIMIT_RECURSION=10000000
 
-ifeq ($(BUILD_TYPE), Release)
-    CFLAGS += -Os
-else
-    CFLAGS += -g -Wall
-endif
-
 INCLUDES = -I$(SRCBASE_DIR) \
 	   -I$(SRCBASE_DIR)/glib \
 	   -I$(SRCBASE_DIR)/build/linux \
 	   -I$(LIBFFI_DIR)/include
 
-LDFLAGS = -L$(BUILD_DIR) -lffi \
+LDFLAGS := -L$(BUILD_DIR) -lffi \
           -z relro \
-          -static-libgcc -static-libstdc++ -Wl,--gc-sections
+          -static-libgcc -static-libstdc++ -Wl,--gc-sections \
+          ${LDFLAGS}
 
 ifeq ($(ARCH), x32)
     CFLAGS += -m32