* Package:    app-cdr/cuegen-1.2.0
 * Repository: gentoo
 * USE:        abi_x86_64 amd64 elibc_musl kernel_linux userland_GNU
 * FEATURES:   network-sandbox preserve-libs sandbox userpriv usersandbox
>>> Unpacking source...
>>> Unpacking cuegen-1.2.0.tar.gz to /var/tmp/portage/app-cdr/cuegen-1.2.0/work
>>> Source unpacked in /var/tmp/portage/app-cdr/cuegen-1.2.0/work
>>> Preparing source in /var/tmp/portage/app-cdr/cuegen-1.2.0/work/cuegen-1.2.0 ...
 * Applying cuegen-1.2.0-fix-build-system.patch ...
 [ ok ]
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/app-cdr/cuegen-1.2.0/work/cuegen-1.2.0 ...
>>> Source configured.
>>> Compiling source in /var/tmp/portage/app-cdr/cuegen-1.2.0/work/cuegen-1.2.0 ...
make -j1 
x86_64-gentoo-linux-musl-gcc -O2 -pipe -march=native -fno-common -falign-functions=32:25:16 -W -Wall -Wstrict-prototypes -Wmissing-prototypes  -Wl,-O1 -Wl,--as-needed  cuegen.c   -o cuegen
cuegen.c: In function ‘interrogate’:
cuegen.c:182:22: warning: implicit declaration of function ‘open’; did you mean ‘popen’? [-Wimplicit-function-declaration]
  182 |         if ( (cdfp = open(cd, O_RDONLY)) == -1){
      |                      ^~~~
      |                      popen
cuegen.c:182:31: error: ‘O_RDONLY’ undeclared (first use in this function)
  182 |         if ( (cdfp = open(cd, O_RDONLY)) == -1){
      |                               ^~~~~~~~
cuegen.c:182:31: note: each undeclared identifier is reported only once for each function it appears in
make: *** [<builtin>: cuegen] Error 1
 * ERROR: app-cdr/cuegen-1.2.0::gentoo failed (compile phase):
 *   emake failed
 * 
 * If you need support, post the output of `emerge --info '=app-cdr/cuegen-1.2.0::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=app-cdr/cuegen-1.2.0::gentoo'`.
 * The complete build log is located at '/var/log/portage/app-cdr:cuegen-1.2.0:20200324-160458.log'.
 * For convenience, a symlink to the build log is located at '/var/tmp/portage/app-cdr/cuegen-1.2.0/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/app-cdr/cuegen-1.2.0/temp/environment'.
 * Working directory: '/var/tmp/portage/app-cdr/cuegen-1.2.0/work/cuegen-1.2.0'
 * S: '/var/tmp/portage/app-cdr/cuegen-1.2.0/work/cuegen-1.2.0'