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| author | Ian Lynagh <igloo@earth.li> | 2010-11-23 17:05:41 +0000 |
|---|---|---|
| committer | Ian Lynagh <igloo@earth.li> | 2010-11-23 17:05:41 +0000 |
| commit | b6fff39114fee90b806ed2e29cc8f5d9728d85a8 (patch) | |
| tree | 92f4f95006b3c9ab13048031c5b2a135efa2236a /aclocal.m4 | |
| parent | 7267a7862cc406e593c89e79a4d5ab064ac40120 (diff) | |
| download | haskell-b6fff39114fee90b806ed2e29cc8f5d9728d85a8.tar.gz | |
Add a configure test for the visibility hidden attribute
Diffstat (limited to 'aclocal.m4')
| -rw-r--r-- | aclocal.m4 | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/aclocal.m4 b/aclocal.m4 index c50d3481da..288fd83208 100644 --- a/aclocal.m4 +++ b/aclocal.m4 @@ -35,6 +35,24 @@ AC_DEFUN([FPTOOLS_SET_C_LD_FLAGS], ]) +# FP_VISIBILITY_HIDDEN +# ---------------------------------- +# Is the visibility hidden attribute supported? +AC_DEFUN([FP_VISIBILITY_HIDDEN], +[ + AC_MSG_CHECKING([whether __attribute__((visibility("hidden"))) is supported]) + echo '__attribute__((visibility("hidden"))) void foo(void) {}' > conftest.c + if $CC -Wall -Werror -c conftest.c > /dev/null 2>&1 + then + AC_MSG_RESULT([yes]) + AC_DEFINE(HAS_VISIBILITY_HIDDEN, 1, [Has visibility hidden]) + else + AC_MSG_RESULT([no]) + fi + rm -f conftest.c conftest.o +]) + + # FPTOOLS_FLOAT_WORD_ORDER_BIGENDIAN # ---------------------------------- # Little endian Arm on Linux with some ABIs has big endian word order |