fatal error: double-conversion/double-conversion.h: No such file or directory

[deepforest]

MX Linux
./configure
ok
error at building Qt 5.15.8

CATED_WARNINGS_SINCE=0x060000 -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DQT_NO_DEBUG -DPCRE2_CODE_UNIT_WIDTH=16 -I. -Iglobal -I../3rdparty/md5 -I../3rdparty/md4 -I../3rdparty/sha3 -I../3rdparty -I../3rdparty/double-conversion/include -I../3rdparty/harfbuzz/src -I../3rdparty/forkfd -I../3rdparty/tinycbor/src -I.rcc -I../../include -I../../include/QtCore -I../../include/QtCore/5.15.8 -I../../include/QtCore/5.15.8/QtCore -I.moc -I.tracegen -I../3rdparty/pcre2/src -I../../mkspecs/linux-g++ -o .obj/double-conversion.o ../3rdparty/double-conversion/double-conversion.cc
../3rdparty/double-conversion/double-conversion.cc:32:10: fatal error: double-conversion/double-conversion.h: No such file or directory
   32 | #include <double-conversion/double-conversion.h>
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
gmake[3]: *** [Makefile:28096: .obj/double-conversion.o] Error 1
gmake[3]: Leaving directory '/home/freeartist-mx/Downloads/qt-everywhere-src-5.15.8/qtbase/src/corelib'
gmake[2]: *** [Makefile:202: sub-corelib-make_first] Error 2
gmake[2]: Leaving directory '/home/freeartist-mx/Downloads/qt-everywhere-src-5.15.8/qtbase/src'
gmake[1]: *** [Makefile:51: sub-src-make_first] Error 2
gmake[1]: Leaving directory '/home/freeartist-mx/Downloads/qt-everywhere-src-5.15.8/qtbase'
gmake: *** [Makefile:88: module-qtbase-make_first] Error 2
root@home:/home/freeartist-mx/Downloads/qt-everywhere-src-5.15.8#

[Christian Ehrlicher]

@deepforest said in fatal error: double-conversion/double-conversion.h: No such file or directory:

double-conversion.h

Can you find it in the qt source dir?

[deepforest]

@Christian-Ehrlicher not found

[Christian Ehrlicher]

Then your source package was not completely unpacked because this header is provided by Qt: https://code.qt.io/cgit/qt/qtbase.git/tree/src/3rdparty/double-conversion/double-conversion