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| author | Björn Gustavsson <[email protected]> | 2011-08-30 17:01:14 +0200 |
|---|---|---|
| committer | Björn Gustavsson <[email protected]> | 2011-09-20 14:02:45 +0200 |
| commit | dd24ca1cb76de9973220fed356540f190a05ac83 (patch) | |
| tree | 7171c03de6e57d2de3fa3f72e7a820a78f73a42e /erts/aclocal.m4 | |
| parent | e84f232326b2800ca806c867b2bfbe3652d423cb (diff) | |
| download | otp-dd24ca1cb76de9973220fed356540f190a05ac83.tar.gz otp-dd24ca1cb76de9973220fed356540f190a05ac83.tar.bz2 otp-dd24ca1cb76de9973220fed356540f190a05ac83.zip | |
Fix build problems on MacOS 10.7 (Lion)
On MacOS 10.7 (Lion) with Xcode 4.1 installed, the default
C compiler is llvm-gcc-4.2. That compiler compiles beam_emu.c
incorrectly, resulting in an emulator that will not start.
The problem can be worked around by turning off all optimizations,
but that will significantly degrade the performance of the run-time
system. The problem can also be worked around manually like this:
CC=gcc-4.2 ./configure
To allow a working system to be built "out of the box", have
the configure script set up the emulator Makefile so that gcc-4.2
will be used to compile beam_emu.c if the default compiler is
llvm-based. All other C files will still be compiled with the
default compiler.
Diffstat (limited to 'erts/aclocal.m4')
| -rw-r--r-- | erts/aclocal.m4 | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/erts/aclocal.m4 b/erts/aclocal.m4 index b64380e817..9956835dc8 100644 --- a/erts/aclocal.m4 +++ b/erts/aclocal.m4 @@ -125,6 +125,9 @@ AC_DEFUN(LM_FIND_EMU_CC, ac_cv_prog_emu_cc, [ AC_TRY_COMPILE([],[ +#ifdef __llvm__ +#error "llvm is currently unable to compile beam_emu.c" +#endif __label__ lbl1; __label__ lbl2; int x = magic(); @@ -140,7 +143,7 @@ lbl2: ],ac_cv_prog_emu_cc=$CC,ac_cv_prog_emu_cc=no) if test $ac_cv_prog_emu_cc = no; then - for ac_progname in emu_cc.sh gcc; do + for ac_progname in emu_cc.sh gcc-4.2 gcc; do IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS=":" ac_dummy="$PATH" for ac_dir in $ac_dummy; do |