30.05.2019 16:45, Tim Rühsen wrote: >> Thanks for details. >> I'll fix this case. > Thank you ! Check updated git master, please. > >> However, it is not advisable to use any -Werror= flags for configure, as >> it may break some tests. >> For example, if you will use -Werror=extra-semi clang flag then you will >> break most of compile and link tests. >> I'd recommend you to run configure without any -Werror flags, but >> redefine CGLAGS with -Werror parameters for make invocation. >> > My CFLAGS are > > ac_configure_args = 'CFLAGS=-g -Og -Wall -Wextra -Wall -Wextra > -Wformat=2 -Walloc-zero -Walloca -Wbad-function-cast -Wcomments > -Wdate-time -Wdouble-promotion -Wduplicated-branches -Wduplicated-cond > -Werror-implicit-function-declaration -Wfloat-conversion -Wfloat-equal > -Wformat -Wformat-signedness -Wformat-truncation -Winit-self > -Winvalid-pch -Wjump-misses-init -Wlogical-op -Wmissing-declarations > -Wmissing-format-attribute -Wmissing-include-dirs -Wmissing-prototypes > -Wmultichar -Wnested-externs -Wnormalized -Wold-style-definition > -Woverlength-strings -Wpedantic -Wpointer-arith -Wredundant-decls > -Wscalar-storage-order -Wshift-overflow -Wstrict-prototypes > -Wstringop-overflow -Wswitch-default -Wswitch-enum -Wundef > -Wunused-const-variable -Wvariadic-macros -Wwrite-strings > -Warray-bounds=2 -Wnormalized=nfc -Wshift-overflow=2 > -Wunused-const-variable=2 -Wformat-overflow=2 -Wformat-truncation=1 > -Wstringop-overflow=2 -fdiagnostics-color=always -Wno-cast-function-type' > > So there is this -Werror-implicit-function-declaration. The CFLAGS are > automatically generated by using 'gcc -Q --help=warnings,C' and some > scripting within a m4 file. This command lists > -Werror-implicit-function-declaration for gcc-4.6 and higher. I wonder > if this is a gcc bug that I run into - since only warnings have been > requested. Looks like a typo in GCC built-in help description. Option '-Werror-implicit-function-declaration' (with minus sign) actually must by '-Werror=implicit-function-declaration' (with equal sign). When you request all warnings, this option is not filtered out by '-Werror=' template and used as error flag.
-- Wishes, Evgney
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