1 # =========================================================================== 2 # http://www.gnu.org/software/autoconf-archive/ax_check_enable_debug.html 3 # =========================================================================== 4 # 5 # SYNOPSIS 6 # 7 # AX_CHECK_ENABLE_DEBUG([enable by default=yes/info/profile/no], [ENABLE DEBUG VARIABLES ...], [DISABLE DEBUG VARIABLES NDEBUG ...], [IS-RELEASE]) 8 # 9 # DESCRIPTION 10 # 11 # Check for the presence of an --enable-debug option to configure, with 12 # the specified default value used when the option is not present. Return 13 # the value in the variable $ax_enable_debug. 14 # 15 # Specifying 'yes' adds '-g -O0' to the compilation flags for all 16 # languages. Specifying 'info' adds '-g' to the compilation flags. 17 # Specifying 'profile' adds '-g -pg' to the compilation flags and '-pg' to 18 # the linking flags. Otherwise, nothing is added. 19 # 20 # Define the variables listed in the second argument if debug is enabled, 21 # defaulting to no variables. Defines the variables listed in the third 22 # argument if debug is disabled, defaulting to NDEBUG. All lists of 23 # variables should be space-separated. 24 # 25 # If debug is not enabled, ensure AC_PROG_* will not add debugging flags. 26 # Should be invoked prior to any AC_PROG_* compiler checks. 27 # 28 # IS-RELEASE can be used to change the default to 'no' when making a 29 # release. Set IS-RELEASE to 'yes' or 'no' as appropriate. By default, it 30 # uses the value of $ax_is_release, so if you are using the AX_IS_RELEASE 31 # macro, there is no need to pass this parameter. 32 # 33 # AX_IS_RELEASE([git-directory]) 34 # AX_CHECK_ENABLE_DEBUG() 35 # 36 # LICENSE 37 # 38 # Copyright (c) 2011 Rhys Ulerich <rhys.ulerich@gmail.com> 39 # Copyright (c) 2014, 2015 Philip Withnall <philip@tecnocode.co.uk> 40 # 41 # Copying and distribution of this file, with or without modification, are 42 # permitted in any medium without royalty provided the copyright notice 43 # and this notice are preserved. 44 45 #serial 5 46 47 AC_DEFUN([AX_CHECK_ENABLE_DEBUG],[ 48 AC_BEFORE([$0],[AC_PROG_CC])dnl 49 AC_BEFORE([$0],[AC_PROG_CXX])dnl 50 AC_BEFORE([$0],[AC_PROG_F77])dnl 51 AC_BEFORE([$0],[AC_PROG_FC])dnl 52 53 AC_MSG_CHECKING(whether to enable debugging) 54 55 ax_enable_debug_default=m4_tolower(m4_normalize(ifelse([$1],,[no],[$1]))) 56 ax_enable_debug_is_release=m4_tolower(m4_normalize(ifelse([$4],, 57 [$ax_is_release], 58 [$4]))) 59 60 # If this is a release, override the default. 61 AS_IF([test "$ax_enable_debug_is_release" = "yes"], 62 [ax_enable_debug_default="no"]) 63 64 m4_define(ax_enable_debug_vars,[m4_normalize(ifelse([$2],,,[$2]))]) 65 m4_define(ax_disable_debug_vars,[m4_normalize(ifelse([$3],,[NDEBUG],[$3]))]) 66 67 AC_ARG_ENABLE(debug, 68 [AS_HELP_STRING([--enable-debug=]@<:@yes/info/profile/no@:>@,[compile with debugging])], 69 [],enable_debug=$ax_enable_debug_default) 70 71 # empty mean debug yes 72 AS_IF([test "x$enable_debug" = "x"], 73 [enable_debug="yes"]) 74 75 # case of debug 76 AS_CASE([$enable_debug], 77 [yes],[ 78 AC_MSG_RESULT(yes) 79 CFLAGS="${CFLAGS} -g -O0" 80 CXXFLAGS="${CXXFLAGS} -g -O0" 81 FFLAGS="${FFLAGS} -g -O0" 82 FCFLAGS="${FCFLAGS} -g -O0" 83 OBJCFLAGS="${OBJCFLAGS} -g -O0" 84 ], 85 [info],[ 86 AC_MSG_RESULT(info) 87 CFLAGS="${CFLAGS} -g" 88 CXXFLAGS="${CXXFLAGS} -g" 89 FFLAGS="${FFLAGS} -g" 90 FCFLAGS="${FCFLAGS} -g" 91 OBJCFLAGS="${OBJCFLAGS} -g" 92 ], 93 [profile],[ 94 AC_MSG_RESULT(profile) 95 CFLAGS="${CFLAGS} -g -pg" 96 CXXFLAGS="${CXXFLAGS} -g -pg" 97 FFLAGS="${FFLAGS} -g -pg" 98 FCFLAGS="${FCFLAGS} -g -pg" 99 OBJCFLAGS="${OBJCFLAGS} -g -pg" 100 LDFLAGS="${LDFLAGS} -pg" 101 ], 102 [ 103 AC_MSG_RESULT(no) 104 dnl Ensure AC_PROG_CC/CXX/F77/FC/OBJC will not enable debug flags 105 dnl by setting any unset environment flag variables 106 AS_IF([test "x${CFLAGS+set}" != "xset"], 107 [CFLAGS=""]) 108 AS_IF([test "x${CXXFLAGS+set}" != "xset"], 109 [CXXFLAGS=""]) 110 AS_IF([test "x${FFLAGS+set}" != "xset"], 111 [FFLAGS=""]) 112 AS_IF([test "x${FCFLAGS+set}" != "xset"], 113 [FCFLAGS=""]) 114 AS_IF([test "x${OBJCFLAGS+set}" != "xset"], 115 [OBJCFLAGS=""]) 116 ]) 117 118 dnl Define various variables if debugging is disabled. 119 dnl assert.h is a NOP if NDEBUG is defined, so define it by default. 120 AS_IF([test "x$enable_debug" = "xyes"], 121 [m4_map_args_w(ax_enable_debug_vars, [AC_DEFINE(], [,,[Define if debugging is enabled])])], 122 [m4_map_args_w(ax_disable_debug_vars, [AC_DEFINE(], [,,[Define if debugging is disabled])])]) 123 ax_enable_debug=$enable_debug 124 ])
