OSX 64bit - failed to execvp

[xilan...@gmail.com]

Hi,

I have successfully compiled on OSX 64 bit using the correct CEF binaries, the compilation now completes and a chromium instance is opened, but it won't navigate to any webpage. This is the error message i am getting :

[cocoa] cocoa.go:72: CreateWindow
[cocoa] cocoa.go:88: ConnectDestroySignal
[cef] cef.go:195: CreateBrowser, url= http://localhost:3000/monkadmin/
[cef] cef_darwin.go:41: FillWindowInfo
[cef] cef.go:232: RunMessageLoop
get_life_span_handler
LaunchProcess: failed to execvp:

How can i solve this ?

Thanks in advance

[Czarek Tomczak]

It failed to launch a subprocess. Try buiding and running using the original unmodified cef2go sources and if the error still persists attach full logs.

[xilan...@gmail.com]

What do you mean gy "unmodified cef2go sources"?

I just edited main_darwin.go, specifically i changed this line :


url := "file://" + exeDir + "/example.html"

into

url := "http://localhost:3000/monkadmin"

If i use the original main_darwin.go, the problem persists, this is the output :

Copying CEF framework directory to Release/tmp
go install -x cef
WORK=/var/folders/c6/snmkcstx5t927hn229tjvg480000gn/T/go-build325194645
rm -f Release/cef2go.app/Contents/MacOS/cef2go
go build -x -ldflags "-r ." -o Release/cef2go.app/Contents/MacOS/cef2go src/main_darwin.go
WORK=/var/folders/c6/snmkcstx5t927hn229tjvg480000gn/T/go-build542021773
mkdir -p $WORK/cocoa/_obj/
mkdir -p $WORK/
cd /Users/tony/go/src/github.com/CzarekTomczak/cef2go/src/cocoa
CGO_LDFLAGS="-F/Users/tony/go/src/github.com/CzarekTomczak/cef2go/Release/tmp" "-framework" "Cocoa" "-framework" "cef" "-framework" "Cocoa" "-framework" "Cocoa" /usr/local/go/pkg/tool/darwin_amd64/cgo -objdir $WORK/cocoa/_obj/ -- -I $WORK/cocoa/_obj/ -I./../../ -x objective-c -I./../../ -x objective-c cocoa.go export.go
/usr/local/go/pkg/tool/darwin_amd64/6c -F -V -w -trimpath $WORK -I $WORK/cocoa/_obj/ -I /usr/local/go/pkg/darwin_amd64 -o $WORK/cocoa/_obj/_cgo_defun.6 -D GOOS_darwin -D GOARCH_amd64 $WORK/cocoa/_obj/_cgo_defun.c
clang -I . -I. -fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fno-common -print-libgcc-file-name
clang -I . -I. -fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fno-common -I $WORK/cocoa/_obj/ -g -O2 -I./../../ -x objective-c -I./../../ -x objective-c -o $WORK/cocoa/_obj/_cgo_main.o -c $WORK/cocoa/_obj/_cgo_main.c
clang -I . -I. -fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fno-common -I $WORK/cocoa/_obj/ -g -O2 -I./../../ -x objective-c -I./../../ -x objective-c -o $WORK/cocoa/_obj/_cgo_export.o -c $WORK/cocoa/_obj/_cgo_export.c
clang -I . -I. -fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fno-common -I $WORK/cocoa/_obj/ -g -O2 -I./../../ -x objective-c -I./../../ -x objective-c -o $WORK/cocoa/_obj/cocoa.cgo2.o -c $WORK/cocoa/_obj/cocoa.cgo2.c
# cocoa
src/cocoa/cocoa.go:30:5: warning: implicit declaration of function '_GoDestroySignal' is invalid in C99 [-Wimplicit-function-declaration]
clang -I . -I. -fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fno-common -I $WORK/cocoa/_obj/ -g -O2 -I./../../ -x objective-c -I./../../ -x objective-c -o $WORK/cocoa/_obj/export.cgo2.o -c $WORK/cocoa/_obj/export.cgo2.c
clang -I . -I. -fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fno-common -o $WORK/cocoa/_obj/_cgo_.o $WORK/cocoa/_obj/_cgo_main.o $WORK/cocoa/_obj/_cgo_export.o $WORK/cocoa/_obj/cocoa.cgo2.o $WORK/cocoa/_obj/export.cgo2.o -F/Users/tony/go/src/github.com/CzarekTomczak/cef2go/Release/tmp -framework Cocoa -framework cef -framework Cocoa -framework Cocoa
/usr/local/go/pkg/tool/darwin_amd64/cgo -objdir $WORK/cocoa/_obj/ -dynimport $WORK/cocoa/_obj/_cgo_.o -dynout $WORK/cocoa/_obj/_cgo_import.c
/usr/local/go/pkg/tool/darwin_amd64/6c -F -V -w -trimpath $WORK -I $WORK/cocoa/_obj/ -I /usr/local/go/pkg/darwin_amd64 -o $WORK/cocoa/_obj/_cgo_import.6 -D GOOS_darwin -D GOARCH_amd64 $WORK/cocoa/_obj/_cgo_import.c
clang -I . -I. -fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fno-common -o $WORK/cocoa/_obj/_all.o $WORK/cocoa/_obj/_cgo_export.o $WORK/cocoa/_obj/cocoa.cgo2.o $WORK/cocoa/_obj/export.cgo2.o -F/Users/tony/go/src/github.com/CzarekTomczak/cef2go/Release/tmp -Wl,-r -nostdlib
/usr/local/go/pkg/tool/darwin_amd64/6g -o $WORK/cocoa.a -trimpath $WORK -p cocoa -D _/Users/tony/go/src/github.com/CzarekTomczak/cef2go/src/cocoa -I $WORK -pack $WORK/cocoa/_obj/_cgo_gotypes.go $WORK/cocoa/_obj/cocoa.cgo1.go $WORK/cocoa/_obj/export.cgo1.go
pack r $WORK/cocoa.a $WORK/cocoa/_obj/_cgo_import.6 $WORK/cocoa/_obj/_cgo_defun.6 $WORK/cocoa/_obj/_all.o # internal
mkdir -p $WORK/command-line-arguments/_obj/
mkdir -p Release/cef2go.app/Contents/MacOS/
cd /Users/tony/go/src/github.com/CzarekTomczak/cef2go/src
/usr/local/go/pkg/tool/darwin_amd64/6g -o $WORK/command-line-arguments.a -trimpath $WORK -p command-line-arguments -complete -D _/Users/tony/go/src/github.com/CzarekTomczak/cef2go/src -I $WORK -I /Users/tony/go/src/github.com/CzarekTomczak/cef2go/pkg/darwin_amd64 -pack ./main_darwin.go
cd .
/usr/local/go/pkg/tool/darwin_amd64/6l -o Release/cef2go.app/Contents/MacOS/cef2go -L $WORK -L /Users/tony/go/src/github.com/CzarekTomczak/cef2go/pkg/darwin_amd64 -r . -extld=clang -extldflags=-I. $WORK/command-line-arguments.a
install_name_tool -change @executable_path/Chromium\ Embedded\ Framework @executable_path/../Frameworks/Chromium\ Embedded\ Framework.framework/Chromium\ Embedded\ Framework Release/cef2go.app/Contents/MacOS/cef2go
cp -f Release/example.html Release/cef2go.app/Contents/MacOS/example.html
cd Release/cef2go.app/Contents/MacOS && ./cef2go && cd ../../../../
[cef] cef.go:94: ExecuteProcess, args= [./cef2go]
initialize_app_handler
initialize_cef_base
cef_base_t.size = 72
initialize_client_handler
initialize_cef_base
cef_base_t.size = 144
[cef] cef_darwin.go:32: FillMainArgs, argc= 1
cef_base_t.add_ref
cef_base_t.release
[cef] cef.go:112: Initialize
[cef] cef.go:133: CachePath= /Users/tony/go/src/github.com/CzarekTomczak/cef2go/Release/cef2go.app/Contents/MacOS/webcache
[cef] cef.go:148: LogFile= /Users/tony/go/src/github.com/CzarekTomczak/cef2go/Release/cef2go.app/Contents/MacOS/debug.log
on_before_command_line_processing
on_register_custom_schemes
[0212/003935:WARNING:dns_config_service_posix.cc(115)] dns_config has unhandled options!
get_browser_process_handler
LaunchProcess: failed to execvp:
/Users/tony/go/src/github.com/CzarekTomczak/cef2go/Release/cef2go.app/Contents/Frameworks/cef2go Helper.app/Contents/MacOS/cef2go Helper

[cocoa] cocoa.go:72: CreateWindow
[cocoa] cocoa.go:88: ConnectDestroySignal

[cef] cef.go:195: CreateBrowser, url= file:///Users/tony/go/src/github.com/CzarekTomczak/cef2go/Release/cef2go.app/Contents/MacOS/example.html

[cef] cef_darwin.go:41: FillWindowInfo
[cef] cef.go:232: RunMessageLoop
get_life_span_handler
LaunchProcess: failed to execvp:

/Users/tony/go/src/github.com/CzarekTomczak/cef2go/Release/cef2go.app/Contents/Frameworks/cef2go Helper.app/Contents/MacOS/cef2go Helper
get_load_handler
get_focus_handler
get_request_handler

[Czarek Tomczak]

It fails to launch the helper subprocess. You need to recreate directory/file structure to be similar as in 32bit binaries. Proceed according to the instructions in this post: https://groups.google.com/d/msg/cef2go/WAxL8LEAr7E/Oqfjw64bZDoJ

[xilan...@gmail.com]

I solved the problem, i didn't rename a file inside the cef2go Helper package and the strings inside Info.Plist .