qt5base-lts/mkspecs/features/lex.prf
Thiago Macieira 1a3f340d0e Update/fix the qmake support for (f)lex
lex.prf was trying to be halfway between the standard POSIX lex
requirements and those of GNU flex. So fix it to work with both, more or
less, by noticing when lex is actually flex and using the extended GNU
options. Note that POSIX lex is untested and may still not work.

Change-Id: Ib306f8f647014b399b87ffff13f1e8e43fb68b3c
Reviewed-by: Joerg Bornemann <joerg.bornemann@theqtcompany.com>
2015-07-31 17:04:38 +00:00

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#
# Lex extra-compiler for handling files specified in the LEXSOURCES variable
#
{
lex.name = Lex ${QMAKE_FILE_IN}
lex.input = LEXSOURCES
lex_included {
lex.CONFIG += no_link
} else {
lex.variable_out = GENERATED_SOURCES
}
contains(QMAKE_LEX, .*flex) {
# GNU flex, we can use -o outfile
lex.commands = $$QMAKE_LEX $$QMAKE_LEXFLAGS --nounistd -o ${QMAKE_FILE_OUT} ${QMAKE_FILE_IN}
} else {
# stupid POSIX lex, it only generates a file called lex.yy.c
# or lex.prefix.c if the -P<prefix> option is active
intermediate_file = lex.yy.c
QMAKE_LEXEXTRAFLAGS = $$QMAKE_LEXFLAGS $$QMAKE_LEXFLAGS_MANGLE
lex.commands = \
-$(DEL_FILE) ${QMAKE_FILE_OUT}$$escape_expand(\\n\\t) \
$$QMAKE_LEX $$QMAKE_LEXEXTRAFLAGS ${QMAKE_FILE_IN}$$escape_expand(\\n\\t) \
$(MOVE) $$intermediate_file ${QMAKE_FILE_OUT} $$escape_expand(\\n\\t)
unset(intermediate_file)
}
lex.output = $${QMAKE_CPP_MOD_MOC}${QMAKE_FILE_BASE}_lex$${first(QMAKE_EXT_CPP)}
silent:lex.commands = @echo Lex ${QMAKE_FILE_IN} && $$lex.commands
QMAKE_EXTRA_COMPILERS += lex
}