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Commit | Line | Data |
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ef416fc2 | 1 | dnl |
5a1d7a17 | 2 | dnl Compiler stuff for CUPS. |
ef416fc2 | 3 | dnl |
6276d173 | 4 | dnl Copyright 2007-2018 by Apple Inc. |
5a1d7a17 | 5 | dnl Copyright 1997-2007 by Easy Software Products, all rights reserved. |
ef416fc2 | 6 | dnl |
e3101897 | 7 | dnl Licensed under Apache License v2.0. See the file "LICENSE" for more information. |
ef416fc2 | 8 | dnl |
9 | ||
10 | dnl Clear the debugging and non-shared library options unless the user asks | |
11 | dnl for them... | |
50fe7201 | 12 | INSTALL_STRIP="" |
ef416fc2 | 13 | OPTIM="" |
50fe7201 | 14 | AC_SUBST(INSTALL_STRIP) |
ef416fc2 | 15 | AC_SUBST(OPTIM) |
16 | ||
bf3816c7 MS |
17 | AC_ARG_WITH(optim, [ --with-optim set optimization flags ]) |
18 | AC_ARG_ENABLE(debug, [ --enable-debug build with debugging symbols]) | |
19 | AC_ARG_ENABLE(debug_guards, [ --enable-debug-guards build with memory allocation guards]) | |
20 | AC_ARG_ENABLE(debug_printfs, [ --enable-debug-printfs build with CUPS_DEBUG_LOG support]) | |
21 | AC_ARG_ENABLE(unit_tests, [ --enable-unit-tests build and run unit tests]) | |
839a51c8 MS |
22 | |
23 | dnl For debugging, keep symbols, otherwise strip them... | |
24 | if test x$enable_debug = xyes; then | |
25 | OPTIM="-g" | |
26 | else | |
27 | INSTALL_STRIP="-s" | |
28 | fi | |
ef416fc2 | 29 | |
5f64df29 | 30 | dnl Debug printfs can slow things down, so provide a separate option for that |
52f6f666 | 31 | if test x$enable_debug_printfs = xyes; then |
5f64df29 | 32 | CFLAGS="$CFLAGS -DDEBUG" |
94da7e34 | 33 | CXXFLAGS="$CXXFLAGS -DDEBUG" |
5f64df29 MS |
34 | fi |
35 | ||
745129be MS |
36 | dnl Debug guards use an extra 4 bytes for some structures like strings in the |
37 | dnl string pool, so provide a separate option for that | |
38 | if test x$enable_debug_guards = xyes; then | |
39 | CFLAGS="$CFLAGS -DDEBUG_GUARDS" | |
94da7e34 | 40 | CXXFLAGS="$CXXFLAGS -DDEBUG_GUARDS" |
745129be MS |
41 | fi |
42 | ||
5f64df29 MS |
43 | dnl Unit tests take up time during a compile... |
44 | if test x$enable_unit_tests = xyes; then | |
105922ec MS |
45 | if test "$build" != "$host"; then |
46 | AC_MSG_ERROR([Sorry, cannot build unit tests when cross-compiling.]) | |
47 | fi | |
48 | ||
5f64df29 MS |
49 | UNITTESTS="unittests" |
50 | else | |
51 | UNITTESTS="" | |
52 | fi | |
53 | AC_SUBST(UNITTESTS) | |
54 | ||
ed486911 | 55 | dnl Setup general architecture flags... |
bf3816c7 MS |
56 | AC_ARG_WITH(archflags, [ --with-archflags set default architecture flags ]) |
57 | AC_ARG_WITH(ldarchflags, [ --with-ldarchflags set program architecture flags ]) | |
ed486911 | 58 | |
59 | if test -z "$with_archflags"; then | |
60 | ARCHFLAGS="" | |
61 | else | |
62 | ARCHFLAGS="$with_archflags" | |
a603edef MS |
63 | fi |
64 | ||
65 | if test -z "$with_ldarchflags"; then | |
105922ec | 66 | if test "$host_os_name" = darwin; then |
12f89d24 MS |
67 | # Only create Intel programs by default |
68 | LDARCHFLAGS="`echo $ARCHFLAGS | sed -e '1,$s/-arch ppc64//'`" | |
09a101d6 | 69 | else |
70 | LDARCHFLAGS="$ARCHFLAGS" | |
71 | fi | |
a603edef | 72 | else |
839a51c8 | 73 | LDARCHFLAGS="$with_ldarchflags" |
ed486911 | 74 | fi |
75 | ||
76 | AC_SUBST(ARCHFLAGS) | |
09a101d6 | 77 | AC_SUBST(LDARCHFLAGS) |
ed486911 | 78 | |
f7deaa1a | 79 | dnl Read-only data/program support on Linux... |
bf3816c7 | 80 | AC_ARG_ENABLE(relro, [ --enable-relro build with the GCC relro option]) |
f7deaa1a | 81 | |
ef416fc2 | 82 | dnl Update compiler options... |
ac884b6a MS |
83 | CXXLIBS="${CXXLIBS:=}" |
84 | AC_SUBST(CXXLIBS) | |
85 | ||
a74454a7 | 86 | PIEFLAGS="" |
87 | AC_SUBST(PIEFLAGS) | |
88 | ||
f7deaa1a | 89 | RELROFLAGS="" |
90 | AC_SUBST(RELROFLAGS) | |
91 | ||
ef416fc2 | 92 | if test -n "$GCC"; then |
2abf387c | 93 | # Add GCC-specific compiler options... |
ef416fc2 | 94 | if test -z "$OPTIM"; then |
95 | if test "x$with_optim" = x; then | |
96 | # Default to optimize-for-size and debug | |
97 | OPTIM="-Os -g" | |
98 | else | |
99 | OPTIM="$with_optim $OPTIM" | |
100 | fi | |
101 | fi | |
102 | ||
a4924f6c | 103 | # Generate position-independent code as needed... |
5a1d7a17 | 104 | if test $PICFLAG = 1; then |
ef416fc2 | 105 | OPTIM="-fPIC $OPTIM" |
106 | fi | |
107 | ||
a4924f6c MS |
108 | # The -fstack-protector option is available with some versions of |
109 | # GCC and adds "stack canaries" which detect when the return address | |
110 | # has been overwritten, preventing many types of exploit attacks. | |
9483577f | 111 | AC_MSG_CHECKING(whether compiler supports -fstack-protector) |
a4924f6c MS |
112 | OLDCFLAGS="$CFLAGS" |
113 | CFLAGS="$CFLAGS -fstack-protector" | |
68b10830 | 114 | AC_TRY_LINK(,, |
db8b865d MS |
115 | if test "x$LSB_BUILD" = xy; then |
116 | # Can't use stack-protector with LSB binaries... | |
117 | OPTIM="$OPTIM -fno-stack-protector" | |
118 | else | |
119 | OPTIM="$OPTIM -fstack-protector" | |
120 | fi | |
a4924f6c MS |
121 | AC_MSG_RESULT(yes), |
122 | AC_MSG_RESULT(no)) | |
123 | CFLAGS="$OLDCFLAGS" | |
124 | ||
db8b865d MS |
125 | if test "x$LSB_BUILD" != xy; then |
126 | # The -fPIE option is available with some versions of GCC and | |
127 | # adds randomization of addresses, which avoids another class of | |
128 | # exploits that depend on a fixed address for common functions. | |
129 | # | |
130 | # Not available to LSB binaries... | |
9483577f | 131 | AC_MSG_CHECKING(whether compiler supports -fPIE) |
db8b865d | 132 | OLDCFLAGS="$CFLAGS" |
105922ec MS |
133 | case "$host_os_name" in |
134 | darwin*) | |
483fc76b MS |
135 | CFLAGS="$CFLAGS -fPIE -Wl,-pie" |
136 | AC_TRY_COMPILE(,,[ | |
137 | PIEFLAGS="-fPIE -Wl,-pie" | |
138 | AC_MSG_RESULT(yes)], | |
139 | AC_MSG_RESULT(no)) | |
140 | ;; | |
141 | ||
142 | *) | |
143 | CFLAGS="$CFLAGS -fPIE -pie" | |
144 | AC_TRY_COMPILE(,,[ | |
145 | PIEFLAGS="-fPIE -pie" | |
146 | AC_MSG_RESULT(yes)], | |
147 | AC_MSG_RESULT(no)) | |
148 | ;; | |
149 | esac | |
db8b865d MS |
150 | CFLAGS="$OLDCFLAGS" |
151 | fi | |
ef416fc2 | 152 | |
153 | if test "x$with_optim" = x; then | |
154 | # Add useful warning options for tracking down problems... | |
6276d173 MS |
155 | OPTIM="-Wall -Wno-format-y2k -Wunused -Wno-unused-result -Wsign-conversion $OPTIM" |
156 | ||
157 | # Test GCC version for certain warning flags since -Werror | |
158 | # doesn't trigger... | |
159 | gccversion=`$CC --version | head -1 | awk '{print $NF}'` | |
160 | case "$gccversion" in | |
a8a73fd8 | 161 | 7.* | 8.*) |
6276d173 MS |
162 | OPTIM="$OPTIM -Wno-format-truncation -Wno-tautological-compare" |
163 | ;; | |
164 | esac | |
f228370c | 165 | |
a4924f6c | 166 | # Additional warning options for development testing... |
171b7064 | 167 | if test -d .git; then |
7e86f2f6 | 168 | OPTIM="-Werror $OPTIM" |
d9bca400 | 169 | fi |
ef416fc2 | 170 | fi |
e1d6a774 | 171 | |
105922ec MS |
172 | case "$host_os_name" in |
173 | darwin*) | |
a4924f6c MS |
174 | # -D_FORTIFY_SOURCE=2 adds additional object size |
175 | # checking, basically wrapping all string functions | |
176 | # with buffer-limited ones. Not strictly needed for | |
177 | # CUPS since we already use buffer-limited calls, but | |
22c9029b | 178 | # this will catch any additions that are broken. |
a4924f6c MS |
179 | CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=2" |
180 | ;; | |
181 | ||
105922ec | 182 | linux*) |
a4924f6c MS |
183 | # The -z relro option is provided by the Linux linker command to |
184 | # make relocatable data read-only. | |
185 | if test x$enable_relro = xyes; then | |
9ee955fe | 186 | RELROFLAGS="-Wl,-z,relro,-z,now" |
a4924f6c | 187 | fi |
e1d6a774 | 188 | ;; |
189 | esac | |
ef416fc2 | 190 | else |
2abf387c | 191 | # Add vendor-specific compiler options... |
105922ec MS |
192 | case $host_os_name in |
193 | sunos*) | |
ef416fc2 | 194 | # Solaris |
195 | if test -z "$OPTIM"; then | |
196 | if test "x$with_optim" = x; then | |
ed486911 | 197 | OPTIM="-xO2" |
ef416fc2 | 198 | else |
199 | OPTIM="$with_optim $OPTIM" | |
200 | fi | |
201 | fi | |
202 | ||
ef416fc2 | 203 | if test $PICFLAG = 1; then |
204 | OPTIM="-KPIC $OPTIM" | |
205 | fi | |
206 | ;; | |
207 | *) | |
208 | # Running some other operating system; inform the user they | |
209 | # should contribute the necessary options to | |
210 | # cups-support@cups.org... | |
211 | echo "Building CUPS with default compiler optimizations; contact" | |
9483577f | 212 | echo "cups-devel@cups.org with uname and compiler options needed" |
5bd77a73 MS |
213 | echo "for your platform, or set the CFLAGS and LDFLAGS environment" |
214 | echo "variables before running configure." | |
ef416fc2 | 215 | ;; |
216 | esac | |
217 | fi | |
218 | ||
2abf387c | 219 | # Add general compiler options per platform... |
105922ec MS |
220 | case $host_os_name in |
221 | linux*) | |
dd1abb6b MS |
222 | # glibc 2.8 and higher breaks peer credentials unless you |
223 | # define _GNU_SOURCE... | |
224 | OPTIM="$OPTIM -D_GNU_SOURCE" | |
225 | ;; | |
2abf387c | 226 | esac |