#--------------------------------------------------------------------------- # # xc-val-flgs.m4 # # Copyright (c) 2013 Daniel Stenberg <daniel@haxx.se> # # Permission to use, copy, modify, and distribute this software for any # purpose with or without fee is hereby granted, provided that the above # copyright notice and this permission notice appear in all copies. # # THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES # WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. # #--------------------------------------------------------------------------- # serial 1 dnl _XC_CHECK_VAR_LIBS dnl ------------------------------------------------- dnl Private macro. AC_DEFUN([_XC_CHECK_VAR_LIBS], [ xc_bad_var_libs=no for xc_word in $LIBS; do case "$xc_word" in -l* | --library=*) : ;; *) xc_bad_var_libs=yes ;; esac done if test $xc_bad_var_libs = yes; then AC_MSG_NOTICE([using LIBS: $LIBS]) AC_MSG_NOTICE([LIBS error: LIBS may only be used to specify libraries (-lname).]) fi ]) dnl _XC_CHECK_VAR_LDFLAGS dnl ------------------------------------------------- dnl Private macro. AC_DEFUN([_XC_CHECK_VAR_LDFLAGS], [ xc_bad_var_ldflags=no for xc_word in $LDFLAGS; do case "$xc_word" in -D*) xc_bad_var_ldflags=yes ;; -U*) xc_bad_var_ldflags=yes ;; -I*) xc_bad_var_ldflags=yes ;; -l* | --library=*) xc_bad_var_ldflags=yes ;; esac done if test $xc_bad_var_ldflags = yes; then AC_MSG_NOTICE([using LDFLAGS: $LDFLAGS]) xc_bad_var_msg="LDFLAGS error: LDFLAGS may only be used to specify linker flags, not" for xc_word in $LDFLAGS; do case "$xc_word" in -D*) AC_MSG_NOTICE([$xc_bad_var_msg macro definitions. Use CPPFLAGS for: $xc_word]) ;; -U*) AC_MSG_NOTICE([$xc_bad_var_msg macro suppressions. Use CPPFLAGS for: $xc_word]) ;; -I*) AC_MSG_NOTICE([$xc_bad_var_msg include directories. Use CPPFLAGS for: $xc_word]) ;; -l* | --library=*) AC_MSG_NOTICE([$xc_bad_var_msg libraries. Use LIBS for: $xc_word]) ;; esac done fi ]) dnl _XC_CHECK_VAR_CPPFLAGS dnl ------------------------------------------------- dnl Private macro. AC_DEFUN([_XC_CHECK_VAR_CPPFLAGS], [ xc_bad_var_cppflags=no for xc_word in $CPPFLAGS; do case "$xc_word" in -rpath*) xc_bad_var_cppflags=yes ;; -L* | --library-path=*) xc_bad_var_cppflags=yes ;; -l* | --library=*) xc_bad_var_cppflags=yes ;; esac done if test $xc_bad_var_cppflags = yes; then AC_MSG_NOTICE([using CPPFLAGS: $CPPFLAGS]) xc_bad_var_msg="CPPFLAGS error: CPPFLAGS may only be used to specify C preprocessor flags, not" for xc_word in $CPPFLAGS; do case "$xc_word" in -rpath*) AC_MSG_NOTICE([$xc_bad_var_msg library runtime directories. Use LDFLAGS for: $xc_word]) ;; -L* | --library-path=*) AC_MSG_NOTICE([$xc_bad_var_msg library directories. Use LDFLAGS for: $xc_word]) ;; -l* | --library=*) AC_MSG_NOTICE([$xc_bad_var_msg libraries. Use LIBS for: $xc_word]) ;; esac done fi ]) dnl _XC_CHECK_VAR_CFLAGS dnl ------------------------------------------------- dnl Private macro. AC_DEFUN([_XC_CHECK_VAR_CFLAGS], [ xc_bad_var_cflags=no for xc_word in $CFLAGS; do case "$xc_word" in -D*) xc_bad_var_cflags=yes ;; -U*) xc_bad_var_cflags=yes ;; -I*) xc_bad_var_cflags=yes ;; -rpath*) xc_bad_var_cflags=yes ;; -L* | --library-path=*) xc_bad_var_cflags=yes ;; -l* | --library=*) xc_bad_var_cflags=yes ;; esac done if test $xc_bad_var_cflags = yes; then AC_MSG_NOTICE([using CFLAGS: $CFLAGS]) xc_bad_var_msg="CFLAGS error: CFLAGS may only be used to specify C compiler flags, not" for xc_word in $CFLAGS; do case "$xc_word" in -D*) AC_MSG_NOTICE([$xc_bad_var_msg macro definitions. Use CPPFLAGS for: $xc_word]) ;; -U*) AC_MSG_NOTICE([$xc_bad_var_msg macro suppressions. Use CPPFLAGS for: $xc_word]) ;; -I*) AC_MSG_NOTICE([$xc_bad_var_msg include directories. Use CPPFLAGS for: $xc_word]) ;; -rpath*) AC_MSG_NOTICE([$xc_bad_var_msg library runtime directories. Use LDFLAGS for: $xc_word]) ;; -L* | --library-path=*) AC_MSG_NOTICE([$xc_bad_var_msg library directories. Use LDFLAGS for: $xc_word]) ;; -l* | --library=*) AC_MSG_NOTICE([$xc_bad_var_msg libraries. Use LIBS for: $xc_word]) ;; esac done fi ]) dnl XC_CHECK_USER_FLAGS dnl ------------------------------------------------- dnl Public macro. dnl dnl Performs some sanity checks for LIBS, LDFLAGS, dnl CPPFLAGS and CFLAGS values that the user might dnl have set. When checks fails, user is noticed dnl about errors detected in all of them and script dnl execution is halted. dnl dnl Intended to be used early in configure script. AC_DEFUN([XC_CHECK_USER_FLAGS], [ AC_PREREQ([2.50])dnl AC_BEFORE([$0],[XC_CHECK_PROG_CC])dnl dnl check order below matters _XC_CHECK_VAR_LIBS _XC_CHECK_VAR_LDFLAGS _XC_CHECK_VAR_CPPFLAGS _XC_CHECK_VAR_CFLAGS if test $xc_bad_var_libs = yes || test $xc_bad_var_cflags = yes || test $xc_bad_var_ldflags = yes || test $xc_bad_var_cppflags = yes; then AC_MSG_ERROR([Can not continue. Fix errors mentioned immediately above this line.]) fi ]) dnl XC_CHECK_BUILD_FLAGS dnl ------------------------------------------------- dnl Public macro. dnl dnl Performs some sanity checks for LIBS, LDFLAGS, dnl CPPFLAGS and CFLAGS values that the configure dnl script might have set. When checks fails, user dnl is noticed about errors detected in all of them dnl but script continues execution. dnl dnl Intended to be used very late in configure script. AC_DEFUN([XC_CHECK_BUILD_FLAGS], [ AC_PREREQ([2.50])dnl dnl check order below matters _XC_CHECK_VAR_LIBS _XC_CHECK_VAR_LDFLAGS _XC_CHECK_VAR_CPPFLAGS _XC_CHECK_VAR_CFLAGS if test $xc_bad_var_libs = yes || test $xc_bad_var_cflags = yes || test $xc_bad_var_ldflags = yes || test $xc_bad_var_cppflags = yes; then AC_MSG_WARN([Continuing even with errors mentioned immediately above this line.]) fi ])