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| author | Yuri Gribov <tetra2005@gmail.com> | 2022-07-03 10:54:39 +0300 |
|---|---|---|
| committer | Yuri Gribov <tetra2005@gmail.com> | 2022-07-27 21:46:34 +0300 |
| commit | 5235554eb4071c798fef9b29f46e9c96970055ea (patch) | |
| tree | d9f57aa29bef3f36990a6150bfee9963f2c5ed33 /configure.ac | |
| parent | a45905b0166713760a2fb4f2e908d7ce47488371 (diff) | |
| download | libarchive-5235554eb4071c798fef9b29f46e9c96970055ea.tar.gz | |
Hide internal symbols on platforms that support visibility annotations (see discussion in gh-1017).
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index b30430d2..cc51badc 100644 --- a/configure.ac +++ b/configure.ac @@ -1247,6 +1247,18 @@ case "$host_os" in ;; esac +dnl Visibility annotations... +saved_CFLAGS="$CFLAGS" +CFLAGS="$CFLAGS -fvisibility=hidden -Werror" +AC_MSG_CHECKING(whether compiler supports visibility annotations) +AC_LINK_IFELSE([AC_LANG_PROGRAM([ + int foo( void ) __attribute__((visibility("default"))); + ])], + [CFLAGS="$saved_CFLAGS -fvisibility=hidden -D__LIBARCHIVE_ENABLE_VISIBILITY"; + AC_MSG_RESULT(yes)], + [CFLAGS="$saved_CFLAGS" + AC_MSG_RESULT(no)]) + # Ensure test directories are present if building out-of-tree AC_CONFIG_COMMANDS([mkdirs], [mkdir -p libarchive/test tar/test cat/test cpio/test]) |