diff -aur orig/buildSrc/linux.gradle patched/buildSrc/linux.gradle
--- orig/buildSrc/linux.gradle	2022-05-25 14:11:20.000000000 +0200
+++ patched/buildSrc/linux.gradle	2022-07-22 12:45:39.164493724 +0200
@@ -44,8 +44,11 @@
 def commonFlags = [
         "-fno-strict-aliasing", "-fPIC", "-fno-omit-frame-pointer", // optimization flags
         "-fstack-protector",
+        "-Wno-error=cast-function-type",
         "-Wextra", "-Wall", "-Wformat-security", "-Wno-unused", "-Wno-parentheses", "-Werror=trampolines"] // warning flags
 
+commonFlags.addAll(System.getenv("CFLAGS").trim().replaceAll(" +", " ").split(" "))
+
 if (!IS_64) {
     commonFlags += "-m32"
 }
@@ -72,6 +75,8 @@
 
 def linkFlags = IS_STATIC_BUILD ? staticLinkFlags : dynamicLinkFlags;
 
+linkFlags.addAll(System.getenv("LDFLAGS").trim().split(" "))
+
 if (IS_DEBUG_NATIVE) {
     linkFlags += "-g"
 }
@@ -305,7 +310,7 @@
 LINUX.iio.compiler = compiler
 LINUX.iio.ccFlags = [cFlags, "-fvisibility=hidden"].flatten()
 LINUX.iio.linker = IS_STATIC_BUILD ? "ld" : linker
-LINUX.iio.linkFlags = [linkFlags].flatten()
+LINUX.iio.linkFlags = [linkFlags, "-ljpeg"].flatten()
 LINUX.iio.lib = "javafx_iio"
 
 LINUX.prismES2 = [:]
@@ -353,5 +358,5 @@
 LINUX.webkit = [:]
 LINUX.webkit.compiler = compiler
 LINUX.webkit.linker = linker
-LINUX.webkit.ccFlags = commonFlags.flatten()
+LINUX.webkit.ccFlags = [commonFlags, "-fno-lto"].flatten()
 LINUX.webkit.linkFlags = linkFlags.flatten()
diff -aur orig/modules/javafx.media/src/main/native/gstreamer/projects/linux/avplugin/Makefile patched/modules/javafx.media/src/main/native/gstreamer/projects/linux/avplugin/Makefile
--- orig/modules/javafx.media/src/main/native/gstreamer/projects/linux/avplugin/Makefile	2022-05-25 14:11:20.000000000 +0200
+++ patched/modules/javafx.media/src/main/native/gstreamer/projects/linux/avplugin/Makefile	2022-07-22 12:45:39.167827045 +0200
@@ -17,7 +17,7 @@
 OBJBASE_DIR = $(BUILD_DIR)/obj/plugins/avplugin
 endif
 
-CFLAGS = -fPIC                   \
+CFLAGS := -fPIC                   \
          -Wformat                \
          -Wextra                 \
          -Wformat-security       \
@@ -32,13 +32,8 @@
          -DGSTREAMER_LITE \
          -DGLIB_VERSION_MIN_REQUIRED=GLIB_VERSION_2_48 \
          -DGLIB_VERSION_MAX_ALLOWED=GLIB_VERSION_2_48 \
-         -ffunction-sections -fdata-sections
-
-ifeq ($(BUILD_TYPE), Release)
-    CFLAGS += -Os
-else
-    CFLAGS += -g -Wall
-endif
+         -ffunction-sections -fdata-sections \
+         ${CFLAGS}
 
 PACKAGES_INCLUDES := $(shell pkg-config --cflags glib-2.0)
 PACKAGES_LIBS     := $(shell pkg-config --libs glib-2.0 gobject-2.0)
@@ -49,11 +44,12 @@
           -I../../../gstreamer-lite/gstreamer/libs    \
           $(PACKAGES_INCLUDES)
 
-LDFLAGS = -L$(BUILD_DIR)    \
+LDFLAGS := -L$(BUILD_DIR)    \
           -lgstreamer-lite  \
            $(PACKAGES_LIBS) \
           -z relro          \
-          -static-libgcc -static-libstdc++ -Wl,--gc-sections
+          -static-libgcc -static-libstdc++ -Wl,--gc-sections \
+          ${LDFLAGS}
 
 ifneq ($(strip $(LIBAV_DIR)),)
 INCLUDES += -I$(LIBAV_DIR)/include
Only in patched/modules/javafx.media/src/main/native/gstreamer/projects/linux/avplugin: Makefile.orig
diff -aur orig/modules/javafx.media/src/main/native/gstreamer/projects/linux/fxplugins/Makefile patched/modules/javafx.media/src/main/native/gstreamer/projects/linux/fxplugins/Makefile
--- orig/modules/javafx.media/src/main/native/gstreamer/projects/linux/fxplugins/Makefile	2022-05-25 14:11:20.000000000 +0200
+++ patched/modules/javafx.media/src/main/native/gstreamer/projects/linux/fxplugins/Makefile	2022-07-22 12:45:39.167827045 +0200
@@ -14,7 +14,7 @@
 
 TARGET = $(BUILD_DIR)/lib$(BASE_NAME).so
 
-CFLAGS = -fPIC                   \
+CFLAGS := -fPIC                   \
          -Wformat                \
          -Wextra                 \
          -Wformat-security       \
@@ -34,14 +34,8 @@
          -DGSTREAMER_LITE \
          -DGLIB_VERSION_MIN_REQUIRED=GLIB_VERSION_2_48 \
          -DGLIB_VERSION_MAX_ALLOWED=GLIB_VERSION_2_48 \
-         -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)) \
@@ -51,9 +45,10 @@
 PACKAGES_INCLUDES := $(shell pkg-config --cflags glib-2.0)
 PACKAGES_LIBS := $(shell pkg-config --libs glib-2.0 gobject-2.0)
 
-LDFLAGS = -L$(BUILD_DIR) -lgstreamer-lite $(PACKAGES_LIBS) \
+LDFLAGS := -L$(BUILD_DIR) -lgstreamer-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
Only in patched/modules/javafx.media/src/main/native/gstreamer/projects/linux/fxplugins: Makefile.orig
diff -aur orig/modules/javafx.media/src/main/native/gstreamer/projects/linux/gstreamer-lite/Makefile patched/modules/javafx.media/src/main/native/gstreamer/projects/linux/gstreamer-lite/Makefile
--- orig/modules/javafx.media/src/main/native/gstreamer/projects/linux/gstreamer-lite/Makefile	2022-05-25 14:11:20.000000000 +0200
+++ patched/modules/javafx.media/src/main/native/gstreamer/projects/linux/gstreamer-lite/Makefile	2022-07-22 12:45:39.167827045 +0200
@@ -37,7 +37,7 @@
 
 TARGET = $(BUILD_DIR)/lib$(BASE_NAME).so
 
-CFLAGS =-fPIC                   \
+CFLAGS :=-fPIC                   \
         -Wformat                \
         -Wextra                 \
         -Wformat-security       \
@@ -55,13 +55,8 @@
         -DGST_DISABLE_LOADSAVE  \
         -DGLIB_VERSION_MIN_REQUIRED=GLIB_VERSION_2_48 \
         -DGLIB_VERSION_MAX_ALLOWED=GLIB_VERSION_2_48 \
-        -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   \
@@ -79,9 +74,10 @@
 PACKAGES_INCLUDES := $(shell pkg-config --cflags alsa glib-2.0)
 PACKAGES_LIBS := $(shell pkg-config --libs alsa glib-2.0 gobject-2.0 gmodule-2.0 gthread-2.0)
 
-LDFLAGS = -L$(BUILD_DIR) -lm $(PACKAGES_LIBS) \
+LDFLAGS := -L$(BUILD_DIR) -lm $(PACKAGES_LIBS) \
           -z relro \
-          -static-libgcc -static-libstdc++ -Wl,--gc-sections
+          -static-libgcc -static-libstdc++ -Wl,--gc-sections \
+          ${LDFLAGS}
 
 ifeq ($(ARCH), x32)
     CFLAGS += -m32
Only in patched/modules/javafx.media/src/main/native/gstreamer/projects/linux/gstreamer-lite: Makefile.orig
diff -aur orig/modules/javafx.media/src/main/native/jfxmedia/projects/linux/Makefile patched/modules/javafx.media/src/main/native/jfxmedia/projects/linux/Makefile
--- orig/modules/javafx.media/src/main/native/jfxmedia/projects/linux/Makefile	2022-05-25 14:11:20.000000000 +0200
+++ patched/modules/javafx.media/src/main/native/jfxmedia/projects/linux/Makefile	2022-07-22 12:45:39.167827045 +0200
@@ -42,7 +42,7 @@
 
 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 \
@@ -54,7 +54,8 @@
          -DGLIB_VERSION_MIN_REQUIRED=GLIB_VERSION_2_48 \
          -DGLIB_VERSION_MAX_ALLOWED=GLIB_VERSION_2_48 \
          -Werror=deprecated-declarations \
-         -ffunction-sections -fdata-sections
+         -ffunction-sections -fdata-sections \
+         ${CFLAGS}
 
 CPPFLAGS = -fno-rtti -ffunction-sections -fdata-sections
 
@@ -84,21 +85,16 @@
 	           -I$(GSTREAMER_LITE_DIR)/gstreamer/libs \
 		  $(PACKAGES_INCLUDES)
 
-	LDFLAGS = -Wl,-rpath,\$$ORIGIN -L$(BUILD_DIR) -lgstreamer-lite $(PACKAGES_LIBS) \
+	LDFLAGS := -Wl,-rpath,\$$ORIGIN -L$(BUILD_DIR) -lgstreamer-lite $(PACKAGES_LIBS) \
             -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
Only in patched/modules/javafx.media/src/main/native/jfxmedia/projects/linux: Makefile.orig