• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1#---------------------------------------------------------------------------
2#
3# xc-val-flgs.m4
4#
5# Copyright (c) 2013 Daniel Stenberg <daniel@haxx.se>
6#
7# Permission to use, copy, modify, and distribute this software for any
8# purpose with or without fee is hereby granted, provided that the above
9# copyright notice and this permission notice appear in all copies.
10#
11# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18#
19#---------------------------------------------------------------------------
20
21# serial 1
22
23
24dnl _XC_CHECK_VAR_LIBS
25dnl -------------------------------------------------
26dnl Private macro.
27
28AC_DEFUN([_XC_CHECK_VAR_LIBS], [
29  xc_bad_var_libs=no
30  for xc_word in $LIBS; do
31    case "$xc_word" in
32      -l* | --library=*)
33        :
34        ;;
35      *)
36        xc_bad_var_libs=yes
37        ;;
38    esac
39  done
40  if test $xc_bad_var_libs = yes; then
41    AC_MSG_NOTICE([using LIBS: $LIBS])
42    AC_MSG_NOTICE([LIBS error: LIBS may only be used to specify libraries (-lname).])
43  fi
44])
45
46
47dnl _XC_CHECK_VAR_LDFLAGS
48dnl -------------------------------------------------
49dnl Private macro.
50
51AC_DEFUN([_XC_CHECK_VAR_LDFLAGS], [
52  xc_bad_var_ldflags=no
53  for xc_word in $LDFLAGS; do
54    case "$xc_word" in
55      -D*)
56        xc_bad_var_ldflags=yes
57        ;;
58      -U*)
59        xc_bad_var_ldflags=yes
60        ;;
61      -I*)
62        xc_bad_var_ldflags=yes
63        ;;
64      -l* | --library=*)
65        xc_bad_var_ldflags=yes
66        ;;
67    esac
68  done
69  if test $xc_bad_var_ldflags = yes; then
70    AC_MSG_NOTICE([using LDFLAGS: $LDFLAGS])
71    xc_bad_var_msg="LDFLAGS error: LDFLAGS may only be used to specify linker flags, not"
72    for xc_word in $LDFLAGS; do
73      case "$xc_word" in
74        -D*)
75          AC_MSG_NOTICE([$xc_bad_var_msg macro definitions. Use CPPFLAGS for: $xc_word])
76          ;;
77        -U*)
78          AC_MSG_NOTICE([$xc_bad_var_msg macro suppressions. Use CPPFLAGS for: $xc_word])
79          ;;
80        -I*)
81          AC_MSG_NOTICE([$xc_bad_var_msg include directories. Use CPPFLAGS for: $xc_word])
82          ;;
83        -l* | --library=*)
84          AC_MSG_NOTICE([$xc_bad_var_msg libraries. Use LIBS for: $xc_word])
85          ;;
86      esac
87    done
88  fi
89])
90
91
92dnl _XC_CHECK_VAR_CPPFLAGS
93dnl -------------------------------------------------
94dnl Private macro.
95
96AC_DEFUN([_XC_CHECK_VAR_CPPFLAGS], [
97  xc_bad_var_cppflags=no
98  for xc_word in $CPPFLAGS; do
99    case "$xc_word" in
100      -rpath*)
101        xc_bad_var_cppflags=yes
102        ;;
103      -L* | --library-path=*)
104        xc_bad_var_cppflags=yes
105        ;;
106      -l* | --library=*)
107        xc_bad_var_cppflags=yes
108        ;;
109    esac
110  done
111  if test $xc_bad_var_cppflags = yes; then
112    AC_MSG_NOTICE([using CPPFLAGS: $CPPFLAGS])
113    xc_bad_var_msg="CPPFLAGS error: CPPFLAGS may only be used to specify C preprocessor flags, not"
114    for xc_word in $CPPFLAGS; do
115      case "$xc_word" in
116        -rpath*)
117          AC_MSG_NOTICE([$xc_bad_var_msg library runtime directories. Use LDFLAGS for: $xc_word])
118          ;;
119        -L* | --library-path=*)
120          AC_MSG_NOTICE([$xc_bad_var_msg library directories. Use LDFLAGS for: $xc_word])
121          ;;
122        -l* | --library=*)
123          AC_MSG_NOTICE([$xc_bad_var_msg libraries. Use LIBS for: $xc_word])
124          ;;
125      esac
126    done
127  fi
128])
129
130
131dnl _XC_CHECK_VAR_CFLAGS
132dnl -------------------------------------------------
133dnl Private macro.
134
135AC_DEFUN([_XC_CHECK_VAR_CFLAGS], [
136  xc_bad_var_cflags=no
137  for xc_word in $CFLAGS; do
138    case "$xc_word" in
139      -D*)
140        xc_bad_var_cflags=yes
141        ;;
142      -U*)
143        xc_bad_var_cflags=yes
144        ;;
145      -I*)
146        xc_bad_var_cflags=yes
147        ;;
148      -rpath*)
149        xc_bad_var_cflags=yes
150        ;;
151      -L* | --library-path=*)
152        xc_bad_var_cflags=yes
153        ;;
154      -l* | --library=*)
155        xc_bad_var_cflags=yes
156        ;;
157    esac
158  done
159  if test $xc_bad_var_cflags = yes; then
160    AC_MSG_NOTICE([using CFLAGS: $CFLAGS])
161    xc_bad_var_msg="CFLAGS error: CFLAGS may only be used to specify C compiler flags, not"
162    for xc_word in $CFLAGS; do
163      case "$xc_word" in
164        -D*)
165          AC_MSG_NOTICE([$xc_bad_var_msg macro definitions. Use CPPFLAGS for: $xc_word])
166          ;;
167        -U*)
168          AC_MSG_NOTICE([$xc_bad_var_msg macro suppressions. Use CPPFLAGS for: $xc_word])
169          ;;
170        -I*)
171          AC_MSG_NOTICE([$xc_bad_var_msg include directories. Use CPPFLAGS for: $xc_word])
172          ;;
173        -rpath*)
174          AC_MSG_NOTICE([$xc_bad_var_msg library runtime directories. Use LDFLAGS for: $xc_word])
175          ;;
176        -L* | --library-path=*)
177          AC_MSG_NOTICE([$xc_bad_var_msg library directories. Use LDFLAGS for: $xc_word])
178          ;;
179        -l* | --library=*)
180          AC_MSG_NOTICE([$xc_bad_var_msg libraries. Use LIBS for: $xc_word])
181          ;;
182      esac
183    done
184  fi
185])
186
187
188dnl XC_CHECK_USER_FLAGS
189dnl -------------------------------------------------
190dnl Public macro.
191dnl
192dnl Performs some sanity checks for LIBS, LDFLAGS,
193dnl CPPFLAGS and CFLAGS values that the user might
194dnl have set. When checks fails, user is noticed
195dnl about errors detected in all of them and script
196dnl execution is halted.
197dnl
198dnl Intended to be used early in configure script.
199
200AC_DEFUN([XC_CHECK_USER_FLAGS], [
201  AC_PREREQ([2.50])dnl
202  AC_BEFORE([$0],[XC_CHECK_PROG_CC])dnl
203  dnl check order below matters
204  _XC_CHECK_VAR_LIBS
205  _XC_CHECK_VAR_LDFLAGS
206  _XC_CHECK_VAR_CPPFLAGS
207  _XC_CHECK_VAR_CFLAGS
208  if test $xc_bad_var_libs = yes ||
209     test $xc_bad_var_cflags = yes ||
210     test $xc_bad_var_ldflags = yes ||
211     test $xc_bad_var_cppflags = yes; then
212     AC_MSG_ERROR([Can not continue. Fix errors mentioned immediately above this line.])
213  fi
214])
215
216
217dnl XC_CHECK_BUILD_FLAGS
218dnl -------------------------------------------------
219dnl Public macro.
220dnl
221dnl Performs some sanity checks for LIBS, LDFLAGS,
222dnl CPPFLAGS and CFLAGS values that the configure
223dnl script might have set. When checks fails, user
224dnl is noticed about errors detected in all of them
225dnl but script continues execution.
226dnl
227dnl Intended to be used very late in configure script.
228
229AC_DEFUN([XC_CHECK_BUILD_FLAGS], [
230  AC_PREREQ([2.50])dnl
231  dnl check order below matters
232  _XC_CHECK_VAR_LIBS
233  _XC_CHECK_VAR_LDFLAGS
234  _XC_CHECK_VAR_CPPFLAGS
235  _XC_CHECK_VAR_CFLAGS
236  if test $xc_bad_var_libs = yes ||
237     test $xc_bad_var_cflags = yes ||
238     test $xc_bad_var_ldflags = yes ||
239     test $xc_bad_var_cppflags = yes; then
240     AC_MSG_WARN([Continuing even with errors mentioned immediately above this line.])
241  fi
242])
243
244