I want to install libecwj2 library (AUR (en) - libecwj2). During building I get error like this:
../C/NCSUtil/../tinyxml/tinyxml.h:654:95: warning: 'nonnull' argument 'this' compared to NULL [-Wnonnull-compare]
654 | TiXmlElement* ToElement() { return ( this && type == ELEMENT ) ? (TiXmlElement*) this : 0; } ///< Cast to a more defined type. Will return null not of the requested type.
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
libtool: compile: g++ -DHAVE_CONFIG_H -I. -D_GNU_SOURCE -D_REENTRANT -DLIBECWJ2 -DLINUX -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -DPOSIX -I/home/macwojs/Downloads/libecwj2/src/libecwj2-3.3/Source/include -Wall -Wno-long-long -fno-common -fpic -march=x86-64 -mtune=generic -O2 -pipe -fno-plt -fexceptions -Wp,-D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security -fstack-clash-protection -fcf-protection -Wp,-D_GLIBCXX_ASSERTIONS -MT ../C/NCSUtil/NCSPrefs.lo -MD -MP -MF ../C/NCSUtil/.deps/NCSPrefs.Tpo -c ../C/NCSUtil/NCSPrefs.cpp -o ../C/NCSUtil/NCSPrefs.o >/dev/null 2>&1
libtool: compile: g++ -DHAVE_CONFIG_H -I. -D_GNU_SOURCE -D_REENTRANT -DLIBECWJ2 -DLINUX -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -DPOSIX -I/home/macwojs/Downloads/libecwj2/src/libecwj2-3.3/Source/include -Wall -Wno-long-long -fno-common -fpic -march=x86-64 -mtune=generic -O2 -pipe -fno-plt -fexceptions -Wp,-D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security -fstack-clash-protection -fcf-protection -Wp,-D_GLIBCXX_ASSERTIONS -MT ../C/NCSUtil/NCSPrefsXML.lo -MD -MP -MF ../C/NCSUtil/.deps/NCSPrefsXML.Tpo -c ../C/NCSUtil/NCSPrefsXML.cpp -o ../C/NCSUtil/NCSPrefsXML.o >/dev/null 2>&1
make[3]: Leaving directory '/home/macwojs/Downloads/libecwj2/src/libecwj2-3.3/Source/NCSBuildGnu'
make[2]: *** [Makefile:1233: all] Error 2
make[2]: Leaving directory '/home/macwojs/Downloads/libecwj2/src/libecwj2-3.3/Source/NCSBuildGnu'
make[1]: *** [Makefile:366: all-recursive] Error 1
make[1]: Leaving directory '/home/macwojs/Downloads/libecwj2/src/libecwj2-3.3/Source'
make: *** [Makefile:576: all-recursive] Error 1
==> ERROR: A failure occurred in build().
Aborting...
What can I do with this?