Errors while building project with C and C++ code

[haihige]

Hello, I'm trying to build ObjCSword with buildtool on FreeBSD, but I'm running into many errors like these:

	* Building dependencies/icu/source/common/ucnvbocu.cpp (4 / 711) - ( 0.56% )... error

2026-03-05 21:15:42.848 buildtool[84249:102994] Problem running operation <GSXCBuildOperation: 0x206241e50428> ... <NSException: 0x2062431b38a8> NAME:NSGenericException REASON:
Command: `gnustep-config --variable=CC` `gnustep-config --objc-flags` 2> 'build/sword/ucnvbocu.cpp.o.err' -c 'dependencies/icu/source/common/ucnvbocu.cpp'   `gnustep-config --debug-flags`  -I'clucene' -I'.' -I'dependencies' -I'dependencies/clucene' -I'dependencies/.'  -I.//dependencies/sword/include -I.//dependencies/sword/include -I.//dependencies/icu/source/i18n -I.//dependencies/icu/source/i18n -I.//dependencies/icu/source/common -I.//dependencies/icu/source/common -I.//dependencies/icu/source/io -I.//dependencies/icu/source/io -I.//dependencies/clucene -I.//dependencies/clucene -I'.'  -I./src  -I./src/services  -I./../test  -Itest -Isrc  -o 'build/sword/ucnvbocu.cpp.o'
Message: dependencies/icu/source/common/ucnvbocu.cpp:1389:5: error: use of undeclared identifier 'FALSE'
 1389 |     FALSE, FALSE,
      |     ^
dependencies/icu/source/common/ucnvbocu.cpp:1389:12: error: use of undeclared identifier 'FALSE'
 1389 |     FALSE, FALSE,
      |            ^
dependencies/icu/source/common/ucnvbocu.cpp:1397:36: error: use of undeclared identifier 'FALSE'
 1397 |     NULL, NULL, &_Bocu1StaticData, FALSE, &_Bocu1Impl,
      |                                    ^
dependencies/icu/source/common/ucnvbocu.cpp:1399:5: error: use of undeclared identifier 'FALSE'
 1399 |     UCNV_MBCS_TABLE_INITIALIZER
      |     ^
dependencies/icu/source/common/ucnvmbcs.h:421:5: note: expanded from macro 'UCNV_MBCS_TABLE_INITIALIZER'
  421 |     FALSE, \
      |     ^
4 errors generated.

 INFO:(null)
	* Building dependencies/icu/source/common/ucnv_u7.c (5 / 711) - ( 0.70% )... error

2026-03-05 21:15:43.012 buildtool[84249:102994] Problem running operation <GSXCBuildOperation: 0x206241e50568> ... <NSException: 0x2062431a09c8> NAME:NSGenericException REASON:
Command: `gnustep-config --variable=CC` `gnustep-config --objc-flags` 2> 'build/sword/ucnv_u7.c.o.err' -c 'dependencies/icu/source/common/ucnv_u7.c'   `gnustep-config --debug-flags`  -I'clucene' -I'.' -I'dependencies' -I'dependencies/clucene' -I'dependencies/.'  -I.//dependencies/sword/include -I.//dependencies/sword/include -I.//dependencies/icu/source/i18n -I.//dependencies/icu/source/i18n -I.//dependencies/icu/source/common -I.//dependencies/icu/source/common -I.//dependencies/icu/source/io -I.//dependencies/icu/source/io -I.//dependencies/clucene -I.//dependencies/clucene -I'.'  -I./src  -I./src/services  -I./../test  -Itest -Isrc  -o 'build/sword/ucnv_u7.c.o'
Message: dependencies/icu/source/common/ucnv_u7.c:284:30: error: use of undeclared identifier 'FALSE'
  284 |                 inDirectMode=FALSE;
      |                              ^
dependencies/icu/source/common/ucnv_u7.c:327:34: error: use of undeclared identifier 'TRUE'
  327 |                     inDirectMode=TRUE;
      |                                  ^
dependencies/icu/source/common/ucnv_u7.c:409:34: error: use of undeclared identifier 'TRUE'
  409 |                     inDirectMode=TRUE;
      |                                  ^
dependencies/icu/source/common/ucnv_u7.c:539:30: error: use of undeclared identifier 'FALSE'
  539 |                 inDirectMode=FALSE;
      |                              ^

Please let me know what else I can provide to help troubleshoot this. Seeing buildtool in action is pretty sweet!