]>
Commit | Line | Data |
---|---|---|
4e71dc1e JJ |
1 | # FIXME: We temporarily define our own version of AC_PROG_CC. This is |
2 | # copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We | |
3 | # are probably using a cross compiler, which will not be able to fully | |
4 | # link an executable. This should really be fixed in autoconf | |
5 | # itself. | |
6 | ||
7 | AC_DEFUN([LIB_AC_PROG_CC_GNU], | |
8 | [AC_CACHE_CHECK(whether we are using GNU C, ac_cv_prog_gcc, | |
9 | [dnl The semicolon is to pacify NeXT's syntax-checking cpp. | |
10 | cat > conftest.c <<EOF | |
11 | #ifdef __GNUC__ | |
12 | yes; | |
13 | #endif | |
14 | EOF | |
15 | if AC_TRY_COMMAND(${CC-cc} -E conftest.c) | egrep yes >/dev/null 2>&1; then | |
16 | ac_cv_prog_gcc=yes | |
17 | else | |
18 | ac_cv_prog_gcc=no | |
19 | fi])]) | |
20 | ||
21 | AC_DEFUN([LIB_AM_PROG_AS], | |
22 | [# By default we simply use the C compiler to build assembly code. | |
23 | AC_REQUIRE([LIB_AC_PROG_CC]) | |
24 | test "${CCAS+set}" = set || CCAS=$CC | |
25 | test "${CCASFLAGS+set}" = set || CCASFLAGS=$CFLAGS | |
26 | AC_ARG_VAR([CCAS], [assembler compiler command (defaults to CC)]) | |
27 | AC_ARG_VAR([CCASFLAGS], [assembler compiler flags (defaults to CFLAGS)]) | |
28 | ]) | |
29 | ||
30 | AC_DEFUN([LIB_AC_PROG_CC], | |
31 | [AC_BEFORE([$0], [AC_PROG_CPP])dnl | |
32 | AC_CHECK_PROG(CC, gcc, gcc) | |
33 | _AM_DEPENDENCIES(CC) | |
34 | if test -z "$CC"; then | |
35 | AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc) | |
36 | test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH]) | |
37 | fi | |
38 | ||
39 | LIB_AC_PROG_CC_GNU | |
40 | ||
41 | if test $ac_cv_prog_gcc = yes; then | |
42 | GCC=yes | |
43 | dnl Check whether -g works, even if CFLAGS is set, in case the package | |
44 | dnl plays around with CFLAGS (such as to build both debugging and | |
45 | dnl normal versions of a library), tasteless as that idea is. | |
46 | ac_test_CFLAGS="${CFLAGS+set}" | |
47 | ac_save_CFLAGS="$CFLAGS" | |
48 | CFLAGS= | |
49 | _AC_PROG_CC_G | |
50 | if test "$ac_test_CFLAGS" = set; then | |
51 | CFLAGS="$ac_save_CFLAGS" | |
52 | elif test $ac_cv_prog_cc_g = yes; then | |
53 | CFLAGS="-g -O2" | |
54 | else | |
55 | CFLAGS="-O2" | |
56 | fi | |
57 | else | |
58 | GCC= | |
59 | test "${CFLAGS+set}" = set || CFLAGS="-g" | |
60 | fi | |
61 | ]) | |
62 |