diff options
| author | Patrik Hagglund <patrik.h.hagglund@ericsson.com> | 2013-02-04 08:15:53 +0000 |
|---|---|---|
| committer | Patrik Hagglund <patrik.h.hagglund@ericsson.com> | 2013-02-04 08:15:53 +0000 |
| commit | 6c440fcea52e27b3befcf2ad5f7dcc58a15a2e58 (patch) | |
| tree | 0c9fb20caea3bdc811604281d25d7bd76a075617 /autoconf | |
| parent | 9c02a276049cbd1d1511a88ebc7a22bb33658237 (diff) | |
Pass CPPFLAGS/CFLAGS/CXXFLAGS from the environment of configure to
Makefile.config.
This is implied at the bottom of the help text of configure (besides
CC/CXX/LDFLAGS, already passed to Makefile.config).
For backward compatibility, the values of CFLAGS and CXXFLAGS defaults
to empty, overriding the default values provided by autoconf (for
example, '-g -O2' when CC=gcc').
$(CPP) is not used by our makefiles. Therefore, the value of CPP is
not passed to Makefile.config, despite beeing mentioned by 'configure
--help'.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174313 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'autoconf')
| -rw-r--r-- | autoconf/configure.ac | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/autoconf/configure.ac b/autoconf/configure.ac index 4ca4eb9042d..4c3af79edcd 100644 --- a/autoconf/configure.ac +++ b/autoconf/configure.ac @@ -59,6 +59,11 @@ if test ${srcdir} != "." ; then fi fi +dnl Default to empty (i.e. assigning the null string to) CFLAGS and CXXFLAGS, +dnl instead of the autoconf default (for example, '-g -O2' for CC=gcc). +${CFLAGS=} +${CXXFLAGS=} + dnl We need to check for the compiler up here to avoid anything else dnl starting with a different one. AC_PROG_CC(clang llvm-gcc gcc) |