nixpkgs/pkgs/os-specific/linux/spl/install_prefix.patch

diff --git a/Makefile.am b/Makefile.am
index 4977448..ac17217 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -12,10 +12,10 @@ endif
 if CONFIG_KERNEL
 SUBDIRS += module
 
-extradir = @prefix@/src/spl-$(VERSION)
+extradir = @prefix@/libexec/spl
 extra_HEADERS = spl.release.in spl_config.h.in
 
-kerneldir = @prefix@/src/spl-$(VERSION)/$(LINUX_VERSION)
+kerneldir = @prefix@/libexec/spl/$(LINUX_VERSION)
 nodist_kernel_HEADERS = spl.release spl_config.h module/$(LINUX_SYMBOLS)
 endif
 
diff --git a/include/Makefile.am b/include/Makefile.am
index 3200222..4a47aaa 100644
--- a/include/Makefile.am
+++ b/include/Makefile.am
@@ -13,6 +13,6 @@ USER_H =
 EXTRA_DIST = $(COMMON_H) $(KERNEL_H) $(USER_H)
 
 if CONFIG_KERNEL
-kerneldir = @prefix@/src/spl-$(VERSION)/include
+kerneldir = @prefix@/libexec/spl/include
 kernel_HEADERS = $(KERNEL_H)
 endif
diff --git a/include/fs/Makefile.am b/include/fs/Makefile.am
index e0da4b3..d6d7af0 100644
--- a/include/fs/Makefile.am
+++ b/include/fs/Makefile.am
@@ -8,6 +8,6 @@ USER_H =
 EXTRA_DIST = $(COMMON_H) $(KERNEL_H) $(USER_H)
 
 if CONFIG_KERNEL
-kerneldir = @prefix@/src/spl-$(VERSION)/include/fs
+kerneldir = @prefix@/libexec/spl/include/fs
 kernel_HEADERS = $(KERNEL_H)
 endif
diff --git a/include/linux/Makefile.am b/include/linux/Makefile.am
index 712e94e..4af9fb7 100644
--- a/include/linux/Makefile.am
+++ b/include/linux/Makefile.am
@@ -18,6 +18,6 @@ USER_H =
 EXTRA_DIST = $(COMMON_H) $(KERNEL_H) $(USER_H)
 
 if CONFIG_KERNEL
-kerneldir = @prefix@/src/spl-$(VERSION)/include/linux
+kerneldir = @prefix@/libexec/spl/include/linux
 kernel_HEADERS = $(KERNEL_H)
 endif
diff --git a/include/rpc/Makefile.am b/include/rpc/Makefile.am
index cfc8246..4fbd33d 100644
--- a/include/rpc/Makefile.am
+++ b/include/rpc/Makefile.am
@@ -9,6 +9,6 @@ USER_H =
 EXTRA_DIST = $(COMMON_H) $(KERNEL_H) $(USER_H)
 
 if CONFIG_KERNEL
-kerneldir = @prefix@/src/spl-$(VERSION)/include/rpc
+kerneldir = @prefix@/libexec/spl/include/rpc
 kernel_HEADERS = $(KERNEL_H)
 endif
diff --git a/include/sharefs/Makefile.am b/include/sharefs/Makefile.am
index 10e7093..febecdf 100644
--- a/include/sharefs/Makefile.am
+++ b/include/sharefs/Makefile.am
@@ -8,6 +8,6 @@ USER_H =
 EXTRA_DIST = $(COMMON_H) $(KERNEL_H) $(USER_H)
 
 if CONFIG_KERNEL
-kerneldir = @prefix@/src/spl-$(VERSION)/include/sharefs
+kerneldir = @prefix@/libexec/spl/include/sharefs
 kernel_HEADERS = $(KERNEL_H)
 endif
diff --git a/include/sys/Makefile.am b/include/sys/Makefile.am
index 73c4a84..31a9f50 100644
--- a/include/sys/Makefile.am
+++ b/include/sys/Makefile.am
@@ -107,7 +107,7 @@ USER_H =
 EXTRA_DIST = $(COMMON_H) $(KERNEL_H) $(USER_H)
 
 if CONFIG_KERNEL
-kerneldir = @prefix@/src/spl-$(VERSION)/include/sys
+kerneldir = @prefix@/libexec/spl/include/sys
 kernel_HEADERS = $(KERNEL_H)
 endif
 
diff --git a/include/sys/fm/Makefile.am b/include/sys/fm/Makefile.am
index 2821cbe..a84ce8e 100644
--- a/include/sys/fm/Makefile.am
+++ b/include/sys/fm/Makefile.am
@@ -9,6 +9,6 @@ USER_H =
 EXTRA_DIST = $(COMMON_H) $(KERNEL_H) $(USER_H)
 
 if CONFIG_KERNEL
-kerneldir = @prefix@/src/spl-$(VERSION)/include/sys/fm
+kerneldir = @prefix@/libexec/spl/include/sys/fm
 kernel_HEADERS = $(KERNEL_H)
 endif
diff --git a/include/sys/fs/Makefile.am b/include/sys/fs/Makefile.am
index 581083e..0c35fb7 100644
--- a/include/sys/fs/Makefile.am
+++ b/include/sys/fs/Makefile.am
@@ -8,6 +8,6 @@ USER_H =
 EXTRA_DIST = $(COMMON_H) $(KERNEL_H) $(USER_H)
 
 if CONFIG_KERNEL
-kerneldir = @prefix@/src/spl-$(VERSION)/include/sys/fs
+kerneldir = @prefix@/libexec/spl/include/sys/fs
 kernel_HEADERS = $(KERNEL_H)
 endif
diff --git a/include/util/Makefile.am b/include/util/Makefile.am
index e2bf09f..3f5d6ce 100644
--- a/include/util/Makefile.am
+++ b/include/util/Makefile.am
@@ -9,6 +9,6 @@ USER_H =
 EXTRA_DIST = $(COMMON_H) $(KERNEL_H) $(USER_H)
 
 if CONFIG_KERNEL
-kerneldir = @prefix@/src/spl-$(VERSION)/include/util
+kerneldir = @prefix@/libexec/spl/include/util
 kernel_HEADERS = $(KERNEL_H)
 endif
diff --git a/include/vm/Makefile.am b/include/vm/Makefile.am
index 7faab0a..8148b3d 100644
--- a/include/vm/Makefile.am
+++ b/include/vm/Makefile.am
@@ -10,6 +10,6 @@ USER_H =
 EXTRA_DIST = $(COMMON_H) $(KERNEL_H) $(USER_H)
 
 if CONFIG_KERNEL
-kerneldir = @prefix@/src/spl-$(VERSION)/include/vm
+kerneldir = @prefix@/libexec/spl/include/vm
 kernel_HEADERS = $(KERNEL_H)
 endif
diff --git a/module/Makefile.in b/module/Makefile.in
index d4e62e1..73fa01c 100644
--- a/module/Makefile.in
+++ b/module/Makefile.in
@@ -21,15 +21,15 @@ clean:
 modules_install:
 	@# Install the kernel modules
 	$(MAKE) -C @LINUX_OBJ@ SUBDIRS=`pwd` $@ \
-		INSTALL_MOD_PATH=$(DESTDIR)$(INSTALL_MOD_PATH) \
+		INSTALL_MOD_PATH=@prefix@/$(INSTALL_MOD_PATH) \
 		INSTALL_MOD_DIR=$(INSTALL_MOD_DIR) \
 		KERNELRELEASE=@LINUX_VERSION@
 	@# Remove extraneous build products when packaging
-	kmoddir=$(DESTDIR)$(INSTALL_MOD_PATH)/lib/modules/@LINUX_VERSION@; \
-	if [ -n "$(DESTDIR)" ]; then \
+	kmoddir=@prefix@/$(INSTALL_MOD_PATH)/lib/modules/@LINUX_VERSION@; \
+	if [ -n "@prefix@" ]; then \
 		find $$kmoddir -name 'modules.*' | xargs $(RM); \
 	fi
-	sysmap=$(DESTDIR)$(INSTALL_MOD_PATH)/boot/System.map-@LINUX_VERSION@; \
+	sysmap=@prefix@/$(INSTALL_MOD_PATH)/boot/System.map-@LINUX_VERSION@; \
 	if [ -f $$sysmap ]; then \
 		depmod -ae -F $$sysmap @LINUX_VERSION@; \
 	fi