diff options
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/configure.in b/configure.in index afc35ee3a..c659ad142 100644 --- a/configure.in +++ b/configure.in @@ -318,7 +318,24 @@ OLD_CFLAGS="$CFLAGS" CFLAGS="$CFLAGS -Wno-pointer-sign" AC_COMPILE_IFELSE( [int foo;], - [AC_MSG_RESULT([yes])], + [ + AC_MSG_RESULT([yes]) + AC_MSG_CHECKING([whether $CC can actually use -Wno-pointer-sign]) + # This option causes warnings in C++ mode + # Note: -Werror must be before -Wno-pointer-sign, otherwise it does not do anything + CFLAGS="$OLD_CFLAGS -Werror -Wno-pointer-sign" + AC_COMPILE_IFELSE( + [int foo;], + [ + AC_MSG_RESULT([yes]) + CFLAGS="$OLD_CFLAGS -Wno-pointer-sign" + ], + [ + AC_MSG_RESULT([no]) + CFLAGS="$OLD_CFLAGS" + ] + ) + ], [ AC_MSG_RESULT([no]) CFLAGS="$OLD_CFLAGS" @@ -555,7 +572,7 @@ AC_CHECK_HEADER([zlib.h], [], [AC_MSG_ERROR([zlib header not found, please speci # # math library (required) # -AC_CHECK_LIB([m], [sqrt], [], [AC_MSG_ERROR([math library not found... stopping])]) +AC_SEARCH_LIBS([sqrt], [m], [], [AC_MSG_ERROR([math library not found... stopping])]) # |