package/leptonica: affected by gcc bug 101737

leptonica is affected by gcc bug 101737 resulting in the following build
failure since at least bump to version 1.82.0 in commit
81a961c545cc9f240841b75d6c21f13b334bc274:

sh4eb-buildroot-linux-gnu-gcc.br_real: internal compiler error: Segmentation fault signal terminated program cc1
Please submit a full bug report, with preprocessed source (by using -freport-bug).
See <http://bugs.buildroot.net/> for instructions.

Fixes:
 - http://autobuild.buildroot.org/results/f18979454399d9c728f9e017e4cc3a1b27458f5b
 - http://autobuild.buildroot.org/results/f3c803892175b3bb2ce68e3140c879b4a4d4b302

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 31b488337921d57c14893c34766ac22c53e5382b)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/leptonica/leptonica.mk

@@ -14,6 +14,10 @@ LEPTONICA_DEPENDENCIES = host-pkgconf
 
 LEPTONICA_CONF_OPTS += --disable-programs
 
+ifeq ($(BR2_TOOLCHAIN_HAS_GCC_BUG_101737),y)
+LEPTONICA_CONF_OPTS += CFLAGS="$(TARGET_CFLAGS) -O0"
+endif
+
 ifeq ($(BR2_PACKAGE_GIFLIB),y)
 LEPTONICA_DEPENDENCIES += giflib
 LEPTONICA_CONF_OPTS += --with-giflib