Only hook vfork() if it's available.

[coloredstderr/coloredstderr.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index bfcb85e72e37db95ddfdb65f741b2e337ca9d40d..79a99f52ec84e0258b19291cfc0c3eb081ccfafc 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -24,6 +24,7 @@ AC_CONFIG_SRCDIR([src/coloredstderr.c])
 
 AM_PROG_AR
 AM_INIT_AUTOMAKE([foreign -Wall -Werror])
+LT_PREREQ([2.4])
 LT_INIT([disable-static])
 
 AC_PROG_CC
@@ -36,9 +37,11 @@ AC_C_INLINE
 
 AC_CHECK_HEADERS([fcntl.h])
 
+AC_TYPE_PID_T
 AC_TYPE_SIZE_T
 AC_TYPE_SSIZE_T
 
+AC_FUNC_FORK
 AC_FUNC_MALLOC
 AC_FUNC_REALLOC
 AC_CHECK_FUNCS([dup2 memmove setenv strdup])