Mirror of forum.nim-lang.org

4602 :: how to use PassC/PassL pragma?

• oyster (orginal) [2019-01-29T08:03:23+01:00] view original

  on my machine( MSYS2 + MingW64, windows 64bits)

  
  $ wx-config --libs
  -LE:/msys64/mingw64/lib   -pipe -Wl,--subsystem,windows -mwindows -lwx_mswu_xrc-3.0 -lwx_mswu_webview-3.0 -lwx_mswu_html-3.0 -lwx_mswu_qa-3.0 -lwx_mswu_adv-3.0 -lwx_mswu_core-3.0 -lwx_baseu_xml-3.0 -lwx_baseu_net-3.0 -lwx_baseu-3.0
  
  $ wx-config --cppflags
  -IE:/msys64/mingw64/lib/wx/include/msw-unicode-3.0 -IE:/msys64/mingw64/include/wx-3.0 -D_FILE_OFFSET_BITS=64 -DWXUSINGDLL -D__WXMSW__
  Run

  In wxCompile.nim of wxnim, the code

  const wxConfig = "wx-config"
  {.passC: "`" & wxConfig & " --cppflags`".}
  {.passL: "`" & wxConfig & " --libs`".}
  Run

  will not be compiled because the back quote mark:

  
  $ nim cpp -r controlgallery.nim
  
  ...
  Error: execution of an external compiler program 'g++.exe -c  -w -mno-ms-bitfields -w -fpermissive -mno-ms-bitfields -DWIN32_LEAN_AND_MEAN `wx-config --cppflags`  -IE:\msys64\home\USER\_nim\nim\lib -IR:\examples\genuimacro -o C:\Users\USER\nimcache\controlgallery_d\stdlib_helpers2.cpp.o C:\Users\USER\nimcache\controlgallery_d\stdlib_helpers2.cpp' failed with exit code: 1
  
  g++.exe: error: `wx-config: No such file or directory
  g++.exe: error: unrecognized command line option '--cppflags`'
  Run

  Although it is not right but we can find the passC and passL actually pass the string to compiler

  After reading doc, I change the code in wxCompile.nim of wxnim to

  const wxConfig = "wx-config"
  {.passC: gorge(wxConfig & " --cppflags").}
  {.passL: gorge(wxConfig & " --libs all").}
  Run

  but

  
  $ nim cpp -r controlgallery.nim
  
  ...
  
  Error: execution of an external compiler program 'g++.exe -c  -w -mno-ms-bitfields -w -fpermissive -mno-ms-bitfields -DWIN32_LEAN_AND_MEAN  -IE:\msys64\home\USER\_nim\nim\lib -IR:\examples\genuimacro -o C:\Users\USER\nimcache\controlgallery_d\wxnim_wx.cpp.o C:\Users\USER\nimcache\controlgallery_d\wxnim_wx.cpp' failed with exit code: 1
  
  C:\Users\USER\nimcache\controlgallery_d\wxnim_wx.cpp:10:23: fatal error: wx/wxprec.h: No such file or directory
   #include <wx/wxprec.h>
                         ^
  compilation terminated.
  Run

  as you can find, passC and passL are not passed to g++

  So why and what is the proper code here? Thanks

---

• juancarlospaco (orginal) [2019-01-29T08:06:55+01:00] view original

  Pass the whole string literal verbatim.

---