Mirror of forum.nim-lang.org

7076 :: nim.cfg

• HJarausch (orginal) [2020-11-11T22:52:12+01:00] view original

  I'd like to compile the GIT version of Nim on Termux (a Linux environment on Android) Unfortunately the settings under @if android don't get set. How does Nim determine the OS und how can I change this? uname displays 'linux'

  Many thanks for a hint, Helmut

---

• treeform (orginal) [2020-11-11T23:35:45+01:00] view original

  Have you seen https://nim-lang.github.io/Nim/nimc.html#crossminuscompilation-for-android ?

  It used to grab the right flags, but you can try --cpu:arm --os:android and see if that works for you?

---

• HJarausch (orginal) [2020-11-13T14:46:55+01:00] view original

  Thanks! To build nim on Termux, I had to patch config/nim.cfg and csources/makefile - see below.

  uname returns Linux, only uname -o returns Android.

  Currently I have hijacked the unix target by adding -landroid-glob -latomic to the linker flags. But this will probably fail for a non-Android Linux since there isn't libandroid-glob. So, for a clean patch, I would have to know how I can find out the value of uname -o within nim.cfg

  Similar fixes have to be applied in csources/makefile where I could exec uname -o

  Furthermore on my Tablet, uname -m reports armv8l which isn't accounted for in csources/makefile.

  For the record, here is my recipe to build Nim on Termux

  
  git clone https://github.com/nim-lang/Nim.git
  pushd Nim
  git clone -q --depth 1 https://github.com/nim-lang/csources.git
  patch -p0 < ../nim.cfg.patch
  patch -p0 < ../csources.patch
  ./build_all.sh
  for X in bin/{nim,nimble,nimgrep,nimsuggest,nimfind,nimpretty,testament}; do
    cp $X $PREFIX/bin
  done
  Run

  with nim.cf.patch containing

  
  --- config/nim.cfg.Orig	2020-11-12 21:01:55.772997865 +0100
  +++ config/nim.cfg	2020-11-12 21:04:01.402997775 +0100
  @@ -113,10 +113,10 @@
   @if unix:
     @if not bsd or haiku:
       # -fopenmp
  -    gcc.options.linker = "-ldl"
  -    gcc.cpp.options.linker = "-ldl"
  -    clang.options.linker = "-ldl"
  -    clang.cpp.options.linker = "-ldl"
  +    gcc.options.linker = "-ldl -landroid-glob -latomic"
  +    gcc.cpp.options.linker = "-ldl -landroid-glob -latomic"
  +    clang.options.linker = "-ldl -landroid-glob -latomic"
  +    clang.cpp.options.linker = "-ldl -landroid-glob -latomic"
       tcc.options.linker = "-ldl"
     @end
     @if bsd:
  Run

  and csources.patch contains

  
  --- csources/makefile.Orig	2020-11-13 11:48:32.222648732 +0100
  +++ csources/makefile	2020-11-13 11:32:31.795701655 +0100
  @@ -22,8 +22,14 @@
   endif
   
   ifeq ($(uos),linux)
  -  myos = linux
  -  LDFLAGS += -ldl -lm
  +  los := $(shell sh -c 'uname -o| tr "[:upper:]" "[:lower:]"')
  +  ifeq ($(los),android)
  +    LDFLAGS += -ldl -lm -landroid-glob -latomic
  +    myos = android
  +  else
  +    LDFLAGS += -ldl -lm
  +    myos = linux
  +  endif
   endif
   ifeq ($(uos),dragonfly)
     myos = freebsd
  @@ -146,6 +152,9 @@
   ifeq ($(ucpu),armv7hl)
     mycpu = arm
   endif
  +ifeq ($(ucpu),armv8l)
  +  mycpu = arm
  +endif
   ifeq ($(ucpu),aarch64)
     mycpu = arm64
   endif
  --- csources/build.sh.Orig	2020-11-13 12:50:10.675444931 +0100
  +++ csources/build.sh	2020-11-13 12:59:48.691413080 +0100
  @@ -71,6 +71,13 @@
   # convert to lower case:
   ucpu=`echo $`ucpu | tr "[:upper:]" "[:lower:]"`
   uos=`echo $uos | tr "[:upper:]" "[:lower:]"`
  +if [ "$uos" = "linux" ] ; then
  +  los=`uname -o`
  +  los=`echo $los | tr "[:upper:]" "[:lower:]"`
  +  if [ "$los" = "android" ] ; then
  +    uosname="android"
  +  fi
  +fi
   uosname=`echo $uosname | tr "[:upper:]" "[:lower:]"`
   
   case $uos in
  @@ -121,7 +128,7 @@
     *android* )
       myos="android"
       LINK_FLAGS="$LINK_FLAGS -ldl -lm -lrt"
  -    LINK_FLAGS="$LINK_FLAGS -landroid-glob"
  +    LINK_FLAGS="$LINK_FLAGS -landroid-glob -latomic"
       ;;
     *)
       echo 2>&1 "Error: unknown operating system: $uos"
  Run

---