diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/spack/spack/compiler.py | 8 | ||||
| -rw-r--r-- | lib/spack/spack/compilers/gcc.py | 21 |
2 files changed, 29 insertions, 0 deletions
diff --git a/lib/spack/spack/compiler.py b/lib/spack/spack/compiler.py index 1e50749730..2e86309699 100644 --- a/lib/spack/spack/compiler.py +++ b/lib/spack/spack/compiler.py @@ -537,6 +537,14 @@ class Compiler(object): ) return self.extract_version_from_output(output) + @property + def prefix(self): + """Query the compiler for its install prefix. This is the install + path as reported by the compiler. Note that paths for cc, cxx, etc + are not enough to find the install prefix of the compiler, since + the can be symlinks, wrappers, or filenames instead of absolute paths.""" + raise NotImplementedError("prefix is not implemented for this compiler") + # # Compiler classes have methods for querying the version of # specific compiler executables. This is used when discovering compilers. diff --git a/lib/spack/spack/compilers/gcc.py b/lib/spack/spack/compilers/gcc.py index 011646c408..1b6eeaaa10 100644 --- a/lib/spack/spack/compilers/gcc.py +++ b/lib/spack/spack/compilers/gcc.py @@ -6,8 +6,11 @@ import os import re +from llnl.util.filesystem import ancestor + import spack.compiler import spack.compilers.apple_clang as apple_clang +import spack.util.executable from spack.version import ver @@ -196,3 +199,21 @@ class Gcc(spack.compiler.Compiler): @property def stdcxx_libs(self): return ("-lstdc++",) + + @property + def prefix(self): + # GCC reports its install prefix when running ``-print-search-dirs`` + # on the first line ``install: <prefix>``. + cc = spack.util.executable.Executable(self.cc) + with self.compiler_environment(): + gcc_output = cc("-print-search-dirs", output=str, error=str) + + for line in gcc_output.splitlines(): + if line.startswith("install:"): + gcc_prefix = line.split(":")[1].strip() + # Go from <prefix>/lib/gcc/<triplet>/<version>/ to <prefix> + return ancestor(gcc_prefix, 4) + + raise RuntimeError( + "could not find install prefix of GCC from output:\n\t{}".format(gcc_output) + ) |