package/fftw: remove as regular package

fftw is no longer a package: only fftw-single, fftw-double,
fftw-long-double and fftw-quad are. fftw.mk only contains some common
definitions that are used by the different fftw variants.

The old BR2_PACKAGE_FFTW_PRECISION_* options, which are no longer used
anywhere, are moved to Config.in.legacy.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Gwenhael Goavec-Merou <gwenhael.goavec-merou@trabucayre.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

Config.in.legacy

@@ -160,6 +160,41 @@ config BR2_PACKAGE_BOOST_SIGNALS
 	  was announced in 1.54. Users are encouraged to use Signals2
 	  instead.
 
+config BR2_PACKAGE_FFTW_PRECISION_SINGLE
+	bool "single"
+	select BR2_LEGACY
+	select BR2_PACKAGE_FFTW_SINGLE
+	help
+	  This option has been removed in favor of
+	  BR2_PACKAGE_FFTW_SINGLE.
+
+config BR2_PACKAGE_FFTW_PRECISION_DOUBLE
+	bool "double"
+	select BR2_LEGACY
+	select BR2_PACKAGE_FFTW_DOUBLE
+	help
+	  This option has been removed in favor of
+	  BR2_PACKAGE_FFTW_DOUBLE.
+
+config BR2_PACKAGE_FFTW_PRECISION_LONG_DOUBLE
+	bool "long double"
+	depends on !(BR2_TOOLCHAIN_BUILDROOT_UCLIBC && \
+		(BR2_arm || BR2_mips || BR2_mipsel))
+	select BR2_LEGACY
+	select BR2_PACKAGE_FFTW_LONG_DOUBLE
+	help
+	  This option has been removed in favor of
+	  BR2_PACKAGE_FFTW_LONG_DOUBLE.
+
+config BR2_PACKAGE_FFTW_PRECISION_QUAD
+	bool "quad"
+	depends on (BR2_i386 || BR2_x86_64) && BR2_USE_WCHAR
+	select BR2_LEGACY
+	select BR2_PACKAGE_FFTW_QUAD
+	help
+	  This option has been removed in favor of
+	  BR2_PACKAGE_FFTW_QUAD.
+
 config BR2_PACKAGE_LUA_5_2
 	bool "Lua 5.2.x version removed"
 	select BR2_LEGACY

package/fftw/Config.in

@@ -1,5 +1,7 @@
 config BR2_PACKAGE_FFTW
 	bool "fftw"
+	select BR2_PACKAGE_FFTW_DOUBLE if !BR2_PACKAGE_FFTW_SINGLE \
+		&& !BR2_PACKAGE_FFTW_LONG_DOUBLE && !BR2_PACKAGE_FFTW_QUAD
 	help
 	  Library for computing Fast Fourier Transforms.
 
@@ -12,47 +14,6 @@ config BR2_PACKAGE_FFTW
 
 if BR2_PACKAGE_FFTW
 
-choice
-	prompt "fftw precision"
-	default BR2_PACKAGE_FFTW_PRECISION_DOUBLE
-	help
-	  Selects fftw precision
-
-config BR2_PACKAGE_FFTW_PRECISION_SINGLE
-	bool "single"
-	select BR2_PACKAGE_FFTW_SINGLE
-	help
-	  Compile fftw in single precision, i.e. use 'float' for
-	  floating point type.
-
-config BR2_PACKAGE_FFTW_PRECISION_DOUBLE
-	bool "double"
-	select BR2_PACKAGE_FFTW_DOUBLE
-	help
-	  Compile fftw in double precision (the default), i.e. use
-	  'double' for floating point type.
-
-config BR2_PACKAGE_FFTW_PRECISION_LONG_DOUBLE
-	bool "long double"
-	# long-double precision require long-double trigonometric routines
-	depends on !(BR2_TOOLCHAIN_BUILDROOT_UCLIBC && \
-		(BR2_arm || BR2_mips || BR2_mipsel))
-	select BR2_PACKAGE_FFTW_LONG_DOUBLE
-	help
-	  Compile fftw in long double precision, i.e. use 'long double'
-	  for floating point type.
-
-config BR2_PACKAGE_FFTW_PRECISION_QUAD
-	bool "quad"
-	# quad-precision needs to have a gcc with libquadmath
-	depends on (BR2_i386 || BR2_x86_64) && BR2_USE_WCHAR
-	select BR2_PACKAGE_FFTW_QUAD
-	help
-	  Compile fftw in quadruple precision, i.e. use '__float128' for
-	  floating point type.
-
-endchoice
-
 source "package/fftw/fftw-single/Config.in"
 source "package/fftw/fftw-double/Config.in"
 source "package/fftw/fftw-long-double/Config.in"

package/fftw/fftw.mk

@@ -10,22 +10,6 @@ FFTW_INSTALL_STAGING = YES
 FFTW_LICENSE = GPL-2.0+
 FFTW_LICENSE_FILES = COPYING
 
-ifeq ($(BR2_PACKAGE_FFTW_DOUBLE),y)
-FFTW_DEPENDENCIES += fftw-double
-endif
-
-ifeq ($(BR2_PACKAGE_FFTW_LONG_DOUBLE),y)
-FFTW_DEPENDENCIES += fftw-long-double
-endif
-
-ifeq ($(BR2_PACKAGE_FFTW_QUAD),y)
-FFTW_DEPENDENCIES += fftw-quad
-endif
-
-ifeq ($(BR2_PACKAGE_FFTW_SINGLE),y)
-FFTW_DEPENDENCIES += fftw-single
-endif
-
 # fortran support only enables generation and installation of fortran sources
 ifeq ($(BR2_TOOLCHAIN_HAS_FORTRAN),y)
 FFTW_COMMON_CONF_OPTS += --enable-fortran
@@ -49,6 +33,4 @@ FFTW_COMMON_CONF_OPTS += --disable-threads
 endif
 FFTW_COMMON_CONF_OPTS += $(if $(BR2_GCC_ENABLE_OPENMP),--enable,--disable)-openmp
 
-$(eval $(generic-package))
-
 include $(sort $(wildcard package/fftw/*/*.mk))