package/imagemagick: use the new fftw-double package

This patch add an explicitly dependency to fftw-double (the only compatible
fftw's flavor) instead of default behavior where the package do assumption
about the compatible version.

Signed-off-by: Gwenhael Goavec-Merou <gwenhael.goavec-merou@trabucayre.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/imagemagick/imagemagick.mk

@@ -113,11 +113,11 @@ else
 IMAGEMAGICK_CONF_OPTS += --without-lzma
 endif
 
-ifeq ($(BR2_PACKAGE_FFTW),y)
+ifeq ($(BR2_PACKAGE_FFTW_DOUBLE),y)
 # configure script misdetects these leading to build errors
 IMAGEMAGICK_CONF_ENV += ac_cv_func_creal=yes ac_cv_func_cimag=yes
 IMAGEMAGICK_CONF_OPTS += --with-fftw
-IMAGEMAGICK_DEPENDENCIES += fftw
+IMAGEMAGICK_DEPENDENCIES += fftw-double
 else
 IMAGEMAGICK_CONF_OPTS += --without-fftw
 endif