# =========================================================================== # http://www.gnu.org/software/autoconf-archive/ax_check_enable_debug.html # =========================================================================== # # SYNOPSIS # # AX_CHECK_ENABLE_DEBUG([enable by default=yes/info/profile/no], [ENABLE DEBUG VARIABLES ...], [DISABLE DEBUG VARIABLES NDEBUG ...], [IS-RELEASE]) # # DESCRIPTION # # Check for the presence of an --enable-debug option to configure, with # the specified default value used when the option is not present. Return # the value in the variable $ax_enable_debug. # # Specifying 'yes' adds '-g -O0' to the compilation flags for all # languages. Specifying 'info' adds '-g' to the compilation flags. # Specifying 'profile' adds '-g -pg' to the compilation flags and '-pg' to # the linking flags. Otherwise, nothing is added. # # Define the variables listed in the second argument if debug is enabled, # defaulting to no variables. Defines the variables listed in the third # argument if debug is disabled, defaulting to NDEBUG. All lists of # variables should be space-separated. # # If debug is not enabled, ensure AC_PROG_* will not add debugging flags. # Should be invoked prior to any AC_PROG_* compiler checks. # # IS-RELEASE can be used to change the default to 'no' when making a # release. Set IS-RELEASE to 'yes' or 'no' as appropriate. By default, it # uses the value of $ax_is_release, so if you are using the AX_IS_RELEASE # macro, there is no need to pass this parameter. # # AX_IS_RELEASE([git-directory]) # AX_CHECK_ENABLE_DEBUG() # # LICENSE # # Copyright (c) 2011 Rhys Ulerich <rhys.ulerich@gmail.com> # Copyright (c) 2014, 2015 Philip Withnall <philip@tecnocode.co.uk> # # Copying and distribution of this file, with or without modification, are # permitted in any medium without royalty provided the copyright notice # and this notice are preserved. #serial 5 AC_DEFUN([AX_CHECK_ENABLE_DEBUG],[ AC_BEFORE([$0],[AC_PROG_CC])dnl AC_BEFORE([$0],[AC_PROG_CXX])dnl AC_BEFORE([$0],[AC_PROG_F77])dnl AC_BEFORE([$0],[AC_PROG_FC])dnl AC_MSG_CHECKING(whether to enable debugging) ax_enable_debug_default=m4_tolower(m4_normalize(ifelse([$1],,[no],[$1]))) ax_enable_debug_is_release=m4_tolower(m4_normalize(ifelse([$4],, [$ax_is_release], [$4]))) # If this is a release, override the default. AS_IF([test "$ax_enable_debug_is_release" = "yes"], [ax_enable_debug_default="no"]) m4_define(ax_enable_debug_vars,[m4_normalize(ifelse([$2],,,[$2]))]) m4_define(ax_disable_debug_vars,[m4_normalize(ifelse([$3],,[NDEBUG],[$3]))]) AC_ARG_ENABLE(debug, [AS_HELP_STRING([--enable-debug=]@<:@yes/info/profile/no@:>@,[compile with debugging])], [],enable_debug=$ax_enable_debug_default) # empty mean debug yes AS_IF([test "x$enable_debug" = "x"], [enable_debug="yes"]) # case of debug AS_CASE([$enable_debug], [yes],[ AC_MSG_RESULT(yes) CFLAGS="${CFLAGS} -g -O0" CXXFLAGS="${CXXFLAGS} -g -O0" FFLAGS="${FFLAGS} -g -O0" FCFLAGS="${FCFLAGS} -g -O0" OBJCFLAGS="${OBJCFLAGS} -g -O0" ], [info],[ AC_MSG_RESULT(info) CFLAGS="${CFLAGS} -g" CXXFLAGS="${CXXFLAGS} -g" FFLAGS="${FFLAGS} -g" FCFLAGS="${FCFLAGS} -g" OBJCFLAGS="${OBJCFLAGS} -g" ], [profile],[ AC_MSG_RESULT(profile) CFLAGS="${CFLAGS} -g -pg" CXXFLAGS="${CXXFLAGS} -g -pg" FFLAGS="${FFLAGS} -g -pg" FCFLAGS="${FCFLAGS} -g -pg" OBJCFLAGS="${OBJCFLAGS} -g -pg" LDFLAGS="${LDFLAGS} -pg" ], [ AC_MSG_RESULT(no) dnl Ensure AC_PROG_CC/CXX/F77/FC/OBJC will not enable debug flags dnl by setting any unset environment flag variables AS_IF([test "x${CFLAGS+set}" != "xset"], [CFLAGS=""]) AS_IF([test "x${CXXFLAGS+set}" != "xset"], [CXXFLAGS=""]) AS_IF([test "x${FFLAGS+set}" != "xset"], [FFLAGS=""]) AS_IF([test "x${FCFLAGS+set}" != "xset"], [FCFLAGS=""]) AS_IF([test "x${OBJCFLAGS+set}" != "xset"], [OBJCFLAGS=""]) ]) dnl Define various variables if debugging is disabled. dnl assert.h is a NOP if NDEBUG is defined, so define it by default. AS_IF([test "x$enable_debug" = "xyes"], [m4_map_args_w(ax_enable_debug_vars, [AC_DEFINE(], [,,[Define if debugging is enabled])])], [m4_map_args_w(ax_disable_debug_vars, [AC_DEFINE(], [,,[Define if debugging is disabled])])]) ax_enable_debug=$enable_debug ])