diff options
Diffstat (limited to 'autoconf/ast_c_compile_check.m4')
-rw-r--r-- | autoconf/ast_c_compile_check.m4 | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/autoconf/ast_c_compile_check.m4 b/autoconf/ast_c_compile_check.m4 new file mode 100644 index 000000000..0d49ec3ca --- /dev/null +++ b/autoconf/ast_c_compile_check.m4 @@ -0,0 +1,31 @@ +# Check if a given expression will compile using a certain header. + +# AST_C_COMPILE_CHECK([package], [expression], [header file], [version], [description]) +AC_DEFUN([AST_C_COMPILE_CHECK], +[ + if test "x${PBX_$1}" != "x1" -a "${USE_$1}" != "no"; then + if test "x$5" != "x"; then + AC_MSG_CHECKING([for $5]) + else + AC_MSG_CHECKING([if "$2" compiles using $3]) + fi + saved_cppflags="${CPPFLAGS}" + if test "x${$1_DIR}" != "x"; then + $1_INCLUDE="-I${$1_DIR}/include" + fi + CPPFLAGS="${CPPFLAGS} ${$1_INCLUDE}" + + AC_COMPILE_IFELSE( + [ AC_LANG_PROGRAM( [#include <$3>], + [ $2; ] + )], + [ AC_MSG_RESULT(yes) + PBX_$1=1 + AC_DEFINE([HAVE_$1], 1, [Define if your system has the $1 headers.]) + AC_DEFINE([HAVE_$1_VERSION], $4, [Define $1 headers version]) + ], + [ AC_MSG_RESULT(no) ] + ) + CPPFLAGS="${saved_cppflags}" + fi +]) |