Gcc 来自“的故障排除警告”；make-j N“；
当我发出类似（例如）Gcc 来自“的故障排除警告”；make-j N“；,gcc,makefile,rhel,rhel-scl,Gcc,Makefile,Rhel,Rhel Scl,当我发出类似（例如）make-j4的命令时，我得到以下错误： warning: jobserver unavailable: using -j1. Add `+' to parent make rule 我正在RHEL6下使用Scientific Linux 6的开发者工具包： $ gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/opt/rh/devtoolset-2/root/usr/libexec/gcc
make-j4warning: jobserver unavailable: using -j1. Add `+' to parent make rule
$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/opt/rh/devtoolset-2/root/usr/libexec/gcc/x86_64-redhat-linux/4.8.2/lto-wrapper
Target: x86_64-redhat-linux
Configured with: ../configure --prefix=/opt/rh/devtoolset-2/root/usr --mandir=/opt/rh/devtoolset-2/root/usr/share/man --infodir=/opt/rh/devtoolset-2/root/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-bootstrap --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-linker-build-id --enable-languages=c,c++,fortran,lto --enable-plugin --with-linker-hash-style=gnu --enable-initfini-array --disable-libgcj --with-isl=/builddir/build/BUILD/gcc-4.8.2-20140120/obj-x86_64-redhat-linux/isl-install --with-cloog=/builddir/build/BUILD/gcc-4.8.2-20140120/obj-x86_64-redhat-linux/cloog-install --with-mpc=/builddir/build/BUILD/gcc-4.8.2-20140120/obj-x86_64-redhat-linux/mpc-install --with-tune=generic --with-arch_32=i686 --build=x86_64-redhat-linux
Thread model: posix
gcc version 4.8.2 20140120 (Red Hat 4.8.2-15) (GCC)
libmpc$ rpm -qa | grep mpc
libmpcdec-1.2.6-6.1.el6.x86_64
libmpc-0.8-3.el6.x86_64
有没有办法对我的项目的makefile或gcc进行故障排除，以确定导致警告的原因并修复它？在通过Clang/LLVM从OSX构建时，我似乎不需要将
+make$（make）makemakemake-jcshmakebashbzip2cd第三方/bzip2-1.0.6&&make libbz2.a&&cd/foo/bar&&rm-f bzip2&&ln-s bzip2-1.0.6第三方/bzip2$（MAKE）