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

3
lib/Makefile.am
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@ -44,6 +44,9 @@ CLEANFILES = $(DSP) $(VCPROJ)
lib_LTLIBRARIES = libcurl.la lib_LTLIBRARIES = libcurl.la
LIBCURL_LIBS = @LIBCURL_LIBS@ 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 # 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 # $(top_builddir), to ensure that these paths which belong to the library
# being currently built and tested are searched before the library which # being currently built and tested are searched before the library which

32
m4/curl-confopts.m4
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@ -339,6 +339,38 @@ AC_HELP_STRING([--disable-warnings],[Disable strict compiler warnings]),
AC_MSG_RESULT([$want_warnings]) AC_MSG_RESULT([$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 CURL_CHECK_NONBLOCKING_SOCKET
dnl ------------------------------------------------- dnl -------------------------------------------------

3
src/Makefile.am
View File

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