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build: Enable configure --enable-werror

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This passes -Werror to gcc when building curl and libcurl,
  allowing easy dection of compile warnings.

Signed-off-by: Ben Greear <greearb@candelatech.com>
This commit is contained in:
Ben Greear 2010-07-19 18:07:09 +02:00 committed by Daniel Stenberg
parent 40ecd6c9b8
commit d6981cb508
4 changed files with 45 additions and 0 deletions
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7
configure.ac
View File

@ -40,6 +40,7 @@ AM_MAINTAINER_MODE
CURL_CHECK_OPTION_DEBUG
CURL_CHECK_OPTION_OPTIMIZE
CURL_CHECK_OPTION_WARNINGS
CURL_CHECK_OPTION_WERROR
CURL_CHECK_OPTION_CURLDEBUG
CURL_CHECK_OPTION_ARES
@ -51,6 +52,12 @@ CURL_CHECK_PATH_SEPARATOR_REQUIRED
CONFIGURE_OPTIONS="\"$ac_configure_args\""
AC_SUBST(CONFIGURE_OPTIONS)
CURL_CFLAG_EXTRAS=""
if test X"$want_werror" == Xyes; then
CURL_CFLAG_EXTRAS="-Werror"
fi
AC_SUBST(CURL_CFLAG_EXTRAS)
dnl SED is mandatory for configure process and libtool.
dnl Set it now, allowing it to be changed later.
if test -z "$SED"; then

3
lib/Makefile.am
View File

@ -44,6 +44,9 @@ CLEANFILES = $(DSP) $(VCPROJ)
lib_LTLIBRARIES = libcurl.la
LIBCURL_LIBS = @LIBCURL_LIBS@
# This might hold -Werror
CFLAGS += @CURL_CFLAG_EXTRAS@
# Specify our include paths here, and do it relative to $(top_srcdir) and
# $(top_builddir), to ensure that these paths which belong to the library
# being currently built and tested are searched before the library which

32
m4/curl-confopts.m4
View File

@ -339,6 +339,38 @@ AC_HELP_STRING([--disable-warnings],[Disable strict compiler warnings]),
AC_MSG_RESULT([$want_warnings])
])
dnl CURL_CHECK_OPTION_WERROR
dnl -------------------------------------------------
dnl Verify if configure has been invoked with option
dnl --enable-werror or --disable-werror, and set
dnl shell variable want_werror as appropriate.
AC_DEFUN([CURL_CHECK_OPTION_WERROR], [
AC_REQUIRE([CURL_CHECK_OPTION_WARNINGS])dnl
AC_BEFORE([$0],[CURL_CHECK_PROG_CC])dnl
AC_MSG_CHECKING([whether to enable compiler warnings as errors])
OPT_COMPILER_WERROR="default"
AC_ARG_ENABLE(werror,
AC_HELP_STRING([--enable-werror],[Enable compiler warnings as errors])
AC_HELP_STRING([--disable-werror],[Disable compiler warnings as errors]),
OPT_COMPILER_WERROR=$enableval)
case "$OPT_COMPILER_WERROR" in
no)
dnl --disable-werror option used
want_werror="no"
;;
default)
dnl --disable-werror option not specified, default to off
want_werror="no"
;;
*)
dnl --enable-werror option used
want_werror="yes"
;;
esac
AC_MSG_RESULT([$want_werror])
])
dnl CURL_CHECK_NONBLOCKING_SOCKET
dnl -------------------------------------------------

3
src/Makefile.am
View File

@ -46,6 +46,9 @@ bin_PROGRAMS = curl
include Makefile.inc
# This might hold -Werror
CFLAGS += @CURL_CFLAG_EXTRAS@
curl_LDADD = $(top_builddir)/lib/libcurl.la @CURL_LIBS@
curl_DEPENDENCIES = $(top_builddir)/lib/libcurl.la
BUILT_SOURCES = hugehelp.c