diff options
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 ecb71ce..c3fcba9 100644 --- a/configure.ac +++ b/configure.ac @@ -42,6 +42,18 @@ AM_PROG_CC_C_O AC_CHECK_FUNCS([mkstemp]) +# Math libraries & functions +# - some compilers use builtin inlines for floor when optimizing +# - lrint() is a C99 addition not found on some older systems +# - must do the libm check first so that the lrint check will have it in $LIBS +save_LIBS="$LIBS" +AC_SEARCH_LIBS([floor], [m]) +AC_SEARCH_LIBS([lrint], [m]) +AC_CHECK_FUNCS([lrint]) +MATH_LIBS="$LIBS" +LIBS="$save_LIBS" +AC_SUBST([MATH_LIBS]) + # Obtain compiler/linker options from dependencies PKG_CHECK_MODULES(BMTOA, x11 xmu) PKG_CHECK_MODULES(ATOBM, xproto) |