bytebool.h error: two or more data types in declaration specifiers

[hemebond]

When compiling the current main branch I get this error with scons target="q3map2":

scons: done reading SConscript files.
scons: Building targets ...
gcc -o build/release/q3map2/tools/quake3/common/cmdlib.o -c -O2 -g -fno-strict-aliasing -pipe -Wall -fmessage-length=0 -fvisibility=hidden -I/usr/include/libxml2 -DQ_NO_STLPORT -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -Ibuild/release/q3map2/include -Iinclude -Ibuild/release/q3map2/libs -Ilibs tools/quake3/common/cmdlib.c
gcc -o build/release/q3map2/tools/quake3/common/imagelib.o -c -O2 -g -fno-strict-aliasing -pipe -Wall -fmessage-length=0 -fvisibility=hidden -I/usr/include/libxml2 -DQ_NO_STLPORT -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -Ibuild/release/q3map2/include -Iinclude -Ibuild/release/q3map2/libs -Ilibs tools/quake3/common/imagelib.c
In file included from /usr/include/unicode/umachine.h:52,
                 from /usr/include/unicode/utypes.h:38,
                 from /usr/include/unicode/ucnv_err.h:88,
                 from /usr/include/unicode/ucnv.h:51,
                 from /usr/include/libxml2/libxml/encoding.h:31,
                 from /usr/include/libxml2/libxml/parser.h:812,
                 from /usr/include/libxml2/libxml/globals.h:18,
                 from /usr/include/libxml2/libxml/threads.h:35,
                 from /usr/include/libxml2/libxml/xmlmemory.h:218,
                 from /usr/include/libxml2/libxml/tree.h:1307,
                 from tools/quake3/common/inout.h:30,
                 from tools/quake3/common/imagelib.c:24:
libs/bytebool.h:37:18: error: two or more data types in declaration specifiers
   37 | typedef qboolean bool; // some code uses bool directly ..
      |                  ^~~~
In file included from libs/mathlib.h:29,
                 from tools/quake3/common/inout.h:31:
libs/bytebool.h:37:1: warning: useless type name in empty declaration
   37 | typedef qboolean bool; // some code uses bool directly ..
      | ^~~~~~~
tools/quake3/common/imagelib.c: In function ‘WriteTGAGray’:
tools/quake3/common/imagelib.c:1175:13: warning: unused variable ‘c’ [-Wunused-variable]
 1175 |         int c;
      |             ^
tools/quake3/common/imagelib.c:1174:13: warning: unused variable ‘i’ [-Wunused-variable]
 1174 |         int i;
      |             ^
scons: *** [build/release/q3map2/tools/quake3/common/imagelib.o] Error 1
scons: building terminated because of errors.

Compiling on Debian Linux x86_64.

[bnoordhuis]

FWIW, I was able to work around that build error by commenting out the offending line:

diff --git a/libs/bytebool.h b/libs/bytebool.h
index 01c98747..03cc5250 100644
--- a/libs/bytebool.h
+++ b/libs/bytebool.h
@@ -34,7 +34,7 @@ typedef bool qboolean;
 #define qfalse false
 #else
 typedef enum { qfalse, qtrue } qboolean;
-typedef qboolean bool; // some code uses bool directly ..
+//typedef qboolean bool; // some code uses bool directly ..
 #endif

 typedef unsigned char byte;