I'm trying to build an open source project with llvm-gcc 4.2 with -emit-llvm flag.
However I get many errors due to warning flags.
Example of these errors:
cc1: error: unrecognized command line option "-Warray-bounds"
cc1: error: unrecognized command line option "-Wjump-misses-init"
cc1: error: unrecognized command line option "-Wvla"
cc1: error: unrecognized command line option "-Wignored-qualifiers"
cc1: error: unrecognized command line option "-Wlogical-op"
cc1: error: unrecognized command line option "-fexcess-precision=fast"
In clang I would use -Wno-error to ignore them, but that doesn't seem to work with llvm-gcc.
Manually removing the flags does not seem reasonable considering that there are 144 Makefiles.
How would I approach this problem?
I was trying hard to search for recent information on llvm-gcc and failed. I concluded that it's a dead project that was part of former LLVM releases but is no longer actively developed. Therefore it doesn't support the same set of warnings as current GCC versions and you cannot expect it to work with the same command line.
The errors you're getting tell you which CLI options are not supported and you have no choice than to remove them or stop using llvm-gcc and switch to something more modern. According to the LLVM website, the project you're looking for is called dragonegg.
http://dragonegg.llvm.org/
Related
I tried to make it with
make ARCH="aarch64" CC="aarch64-alpine-linux-musl-" CROSS_COMPILE="aarch64-alpine-linux-musl-gcc" HOSTCC="gcc" LDFLAGS="--allow-multiple-definition" HOSTLDFLAGS="--allow-multiple-definition" HOSTCFLAGS=""
and I got strange error
HOSTLD scripts/kconfig/conf
gcc: error: unrecognized command-line option '--allow-multiple-definition'
that's weird because I never passed flags with HOSTCCFLAGS
After installing codeblocks c files running but c++ files not running and showing this:
error: unrecognized command line option '-std=gnu++20'; did you mean '-std=gnu++2a'?
It's a compiler error. Click on Compiler settings and under Compiler Flags make sure that General has nothing selected.
Under Settings->Compiler select "Other Compiler Option" tab and change "-std=gnu++20" to -"std=gnu++2a".
That solves the problem.
I'm trying to run bundle install but I'm getting the Error while trying to Install Nokogiri 1.10.3
Here is the error message from mkmf.log.
gcc -o conftest -I/home/chille/.rvm/rubies/ruby-2.5.1/include/ruby-2.5.0/x86_64-linux -I/home/chille/.rvm/rubies/ruby-2.5.1/include/ruby-2$
gcc: error: unrecognized command line option '-Wmisleading-indentation'
gcc: error: unrecognized command line option '-Wimplicit-fallthrough=0'
gcc: error: unrecognized command line option '-Wduplicated-cond'
gcc: error: unrecognized command line option '-Wrestrict'
For those who do not read comments
Debian 10 users, if you find
gcc: error: unrecognized command line option '-Wduplicated-cond'
in mkmf.log
brew unlink gcc
is what you are looking for. I spend an hour looking for an answer and yes, i once missed the answer here, but luckily i have returned and spotted it.
I had faced a similar issue. My default compiler did not recognise certain command line options just like you are facing.
My gcc version was 10. I could solve it by adding an older gcc version (5.5) and set it as default for the gem installation purpose. I followed the step given in this thread to do so.
I am trying to build a program that relies on wxWidgets to run properly. I have the latest version of Xcode installed. I have tried building wxWidgets (both wxWidgets-3.0.2 and wxWidgets-2.9.4, the version originally used by the main program). However, in both cases, running the makefile for the main program gives the following error:
make: /Users/path to wxWidgets/wxWidgets-2.9.4/build-cocoa-release/utils/wxrc/wxrc: No such file or directory
As I understand it, I need to build wxrc to get my main program to build properly (I have tried this, but apparently some header files are missing). Is there any way to configure wxWidgets before this step that will automatically build wxrc as well? Or is that something I need to build separately? If it is separate, how would that be done?
I've pasted the code I originally used to configure wxWidgets below, with line breaks to make it easier to read:
../configure --with-osx_cocoa --with-macosx-version-min=10.7
--with-macosx-sdk=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk
--prefix="$(pwd)" --with-opengl CC=clang CXX=clang++ CXXFLAGS="-stdlib=libc++ -std=c++11"
OBJCXXFLAGS="-stdlib=libc++ -std=c++11" LDFLAGS=-stdlib=libc++
There is one error while building wxWidgets:
../src/osx/cocoa/utils.mm:250:28: error: cannot initialize a parameter of type 'id' with an lvalue of type
'wxNSAppController *'
[NSApp setDelegate:appcontroller];
When I go into the samples directory and enter "make", I get: ld: library not found for -lwx_osx_cocoau_xrc-2.9 clang: error: linker command failed with exit code 1 (use -v to see invocation) When entering "make" in demos, I get: ld: library not found for -lwx_osx_cocoau_core-2.9 clang: error: linker command failed with exit code 1 (use -v to see invocation)
If I missed any steps I should have taken before these (something with Xcode maybe?) please let me know. Thank you very much in advance.
Similar question. I have sugested a workaround proposed on a forum as follows: you can use --with-macosx-sdk=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/".
I’m trying to develop some plotting apps for Windows platform. I’m using Debian and built wxWidgets for cross-compiling as described here.
With MinGW compiler it works perfect and I have no problem with creating Win32 apps under Linux. But I faced some troubles with wxFreeChart.
I run ./configure --host=i386-mingw32 --with-wx-config=/usr/local/i586-mingw32/bin/wx-config
Then I run 'make' and getting error about
unrecognized command line option ‘-mthreads
Full output here:
~/dev/freechart/bk-deps g++ -c -o wxfreechart_lib_legend.o -I./include -I/usr/local/i586-mingw32/lib/wx/include/i586-mingw32msvc-msw-unicode-static-3.0 -I/usr/local/i586-mingw32/include/wx-3.0 -D_LARGEFILE_SOURCE=unknown -D__WXMSW__ -mthreads -O2 ./src/legend.cpp
g++: error: unrecognized command line option ‘-mthreads’
make: *** [wxfreechart_lib_legend.o] Error 1
The only advice I've seen was to remove '-mthreads' from code, but I have no idea where is it(
Problem described above is solved, but still no luck with building wxFreeChart.
Next errors I get were about some additional libs, which I finally solved by
CPPFLAGS="-I/usr/i586-mingw32msvc/include -I~/dev/wxWidgets-3.0.2/include" ./configure --host=i386-mingw32 --with-wx-config=/usr/local/i586-mingw32/bin/wx-config
I'm not sure that including .h from source folder ~/dev/wxWidgets is a good idea, but at least it solved some problems.
Now make crashing with messages like:
In file included from /usr/local/i586-mingw32/include/wx-3.0/wx/wx.h:17:0,
from ./include/wx/wxfreechartdefs.h:20,
from ./include/wx/legend.h:13,
from ./src/legend.cpp:10:
/usr/local/i586-mingw32/include/wx-3.0/wx/list.h: In constructor ‘wxListKey::wxListKey(const wxString&)’:
/usr/local/i586-mingw32/include/wx-3.0/wx/list.h:381:40: error: invalid use of incomplete type ‘class wxString’
or
/usr/local/i586-mingw32/include/wx-3.0/wx/containr.h:247:13: error: incomplete type ‘wxNavigationEnabled<wxControl>::BaseWindowClass {aka wxControl}’ used in nested name specifier
make: *** [wxfreechart_lib_legend.o] Error 1