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build-sys: add --enable-werror 

Add new ./configure option to make all compiler warnings into errors.

Addresses: https://github.com/karelzak/util-linux/issues/1083
Signed-off-by: Karel Zak <kzak@redhat.com>
This commit is contained in:
Karel Zak 2020-07-01 15:23:10 +02:00
parent 077650ff0d
commit 63c80c4cf7
1 changed files with 12 additions and 1 deletions
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13
configure.ac
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@ -122,7 +122,6 @@ AC_C_BIGENDIAN
dnl Compiler warnings
UL_WARN_ADD([-fno-common])
UL_WARN_ADD([-Wall])
UL_WARN_ADD([-Werror=sequence-point])
UL_WARN_ADD([-Wextra])
UL_WARN_ADD([-Wextra-semi])
UL_WARN_ADD([-Wembedded-directive])
@ -146,8 +145,20 @@ UL_WARN_ADD([-Wformat-security])
UL_WARN_ADD([-Wimplicit-function-declaration])
UL_WARN_ADD([-Wdiscarded-qualifiers])
UL_WARN_ADD([-Waddress-of-packed-member])
AC_ARG_ENABLE([werror],
AS_HELP_STRING([--enable-werror], [make all compiler warnings into errors]),
[], [enable_werror=no]
)
AS_IF([test "x$enable_werror" = xyes], [
UL_WARN_ADD([-Werror])
],[
UL_WARN_ADD([-Werror=sequence-point])
])
AC_SUBST([WARN_CFLAGS])
UL_WARN_ADD([-Wno-clobbered], [BSD_WARN_CFLAGS])
AC_SUBST([BSD_WARN_CFLAGS])