diff options
Diffstat (limited to 'm4')
| -rw-r--r-- | m4/execinfo.m4 | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/m4/execinfo.m4 b/m4/execinfo.m4 new file mode 100644 index 00000000000..f1f3cd91638 --- /dev/null +++ b/m4/execinfo.m4 @@ -0,0 +1,31 @@ +# Check for GNU-style execinfo.h. + +dnl Copyright 2012 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +AC_DEFUN([gl_EXECINFO_H], +[ + AC_CHECK_HEADERS_ONCE([execinfo.h]) + + LIB_EXECINFO='' + EXECINFO_H='execinfo.h' + + if test $ac_cv_header_execinfo_h = yes; then + gl_saved_libs=$LIBS + AC_SEARCH_LIBS([backtrace_symbols_fd], [execinfo], + [test "$ac_cv_search_backtrace_symbols_fd" = "none required" || + LIB_EXECINFO=$ac_cv_search_backtrace_symbols_fd]) + LIBS=$gl_saved_libs + test "$ac_cv_search_backtrace_symbols_fd" = no || EXECINFO_H='' + fi + + if test -n "$EXECINFO_H"; then + AC_LIBOBJ([execinfo]) + fi + + AC_SUBST([EXECINFO_H]) + AC_SUBST([LIB_EXECINFO]) + AM_CONDITIONAL([GL_GENERATE_EXECINFO_H], [test -n "$EXECINFO_H"]) +]) |