| dnl Copyright (c) 1995, 1996, 1997, 1998 |
| dnl The Regents of the University of California. All rights reserved. |
| dnl |
| dnl Redistribution and use in source and binary forms, with or without |
| dnl modification, are permitted provided that: (1) source code distributions |
| dnl retain the above copyright notice and this paragraph in its entirety, (2) |
| dnl distributions including binary code include the above copyright notice and |
| dnl this paragraph in its entirety in the documentation or other materials |
| dnl provided with the distribution, and (3) all advertising materials mentioning |
| dnl features or use of this software display the following acknowledgement: |
| dnl ``This product includes software developed by the University of California, |
| dnl Lawrence Berkeley Laboratory and its contributors.'' Neither the name of |
| dnl the University nor the names of its contributors may be used to endorse |
| dnl or promote products derived from this software without specific prior |
| dnl written permission. |
| dnl THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED |
| dnl WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF |
| dnl MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
| dnl |
| dnl LBL autoconf macros |
| dnl |
| |
| dnl |
| dnl Do whatever AC_LBL_C_INIT work is necessary before using AC_PROG_CC. |
| dnl |
| dnl It appears that newer versions of autoconf (2.64 and later) will, |
| dnl if you use AC_TRY_COMPILE in a macro, stick AC_PROG_CC at the |
| dnl beginning of the macro, even if the macro itself calls AC_PROG_CC. |
| dnl See the "Prerequisite Macros" and "Expanded Before Required" sections |
| dnl in the Autoconf documentation. |
| dnl |
| dnl This causes a steaming heap of fail in our case, as we were, in |
| dnl AC_LBL_C_INIT, doing the tests we now do in AC_LBL_C_INIT_BEFORE_CC, |
| dnl calling AC_PROG_CC, and then doing the tests we now do in |
| dnl AC_LBL_C_INIT. Now, we run AC_LBL_C_INIT_BEFORE_CC, AC_PROG_CC, |
| dnl and AC_LBL_C_INIT at the top level. |
| dnl |
| AC_DEFUN(AC_LBL_C_INIT_BEFORE_CC, |
| [ |
| AC_BEFORE([$0], [AC_LBL_C_INIT]) |
| AC_BEFORE([$0], [AC_PROG_CC]) |
| AC_BEFORE([$0], [AC_LBL_FIXINCLUDES]) |
| AC_BEFORE([$0], [AC_LBL_DEVEL]) |
| AC_ARG_WITH(gcc, [ --without-gcc don't use gcc]) |
| $1="" |
| if test "${srcdir}" != "." ; then |
| $1="-I\$(srcdir)" |
| fi |
| if test "${CFLAGS+set}" = set; then |
| LBL_CFLAGS="$CFLAGS" |
| fi |
| if test -z "$CC" ; then |
| case "$host_os" in |
| |
| bsdi*) |
| AC_CHECK_PROG(SHLICC2, shlicc2, yes, no) |
| if test $SHLICC2 = yes ; then |
| CC=shlicc2 |
| export CC |
| fi |
| ;; |
| esac |
| fi |
| if test -z "$CC" -a "$with_gcc" = no ; then |
| CC=cc |
| export CC |
| fi |
| ]) |
| |
| dnl |
| dnl Determine which compiler we're using (cc or gcc) |
| dnl If using gcc, determine the version number |
| dnl If using cc: |
| dnl require that it support ansi prototypes |
| dnl use -O (AC_PROG_CC will use -g -O2 on gcc, so we don't need to |
| dnl do that ourselves for gcc) |
| dnl add -g flags, as appropriate |
| dnl explicitly specify /usr/local/include |
| dnl |
| dnl NOTE WELL: with newer versions of autoconf, "gcc" means any compiler |
| dnl that defines __GNUC__, which means clang, for example, counts as "gcc". |
| dnl |
| dnl usage: |
| dnl |
| dnl AC_LBL_C_INIT(copt, incls) |
| dnl |
| dnl results: |
| dnl |
| dnl $1 (copt set) |
| dnl $2 (incls set) |
| dnl CC |
| dnl LDFLAGS |
| dnl LBL_CFLAGS |
| dnl |
| AC_DEFUN(AC_LBL_C_INIT, |
| [ |
| AC_BEFORE([$0], [AC_LBL_FIXINCLUDES]) |
| AC_BEFORE([$0], [AC_LBL_DEVEL]) |
| AC_BEFORE([$0], [AC_LBL_SHLIBS_INIT]) |
| if test "$GCC" = yes ; then |
| # |
| # -Werror forces warnings to be errors. |
| # |
| ac_lbl_cc_force_warning_errors=-Werror |
| |
| # |
| # Try to have the compiler default to hiding symbols, |
| # so that only symbols explicitly exported with |
| # PCAP_API will be visible outside (shared) libraries. |
| # |
| AC_LBL_CHECK_COMPILER_OPT($1, -fvisibility=hidden) |
| else |
| $2="$$2 -I/usr/local/include" |
| LDFLAGS="$LDFLAGS -L/usr/local/lib" |
| |
| case "$host_os" in |
| |
| darwin*) |
| # |
| # This is assumed either to be GCC or clang, both |
| # of which use -Werror to force warnings to be errors. |
| # |
| ac_lbl_cc_force_warning_errors=-Werror |
| |
| # |
| # Try to have the compiler default to hiding symbols, |
| # so that only symbols explicitly exported with |
| # PCAP_API will be visible outside (shared) libraries. |
| # |
| AC_LBL_CHECK_COMPILER_OPT($1, -fvisibility=hidden) |
| ;; |
| |
| hpux*) |
| # |
| # HP C, which is what we presume we're using, doesn't |
| # exit with a non-zero exit status if we hand it an |
| # invalid -W flag, can't be forced to do so even with |
| # +We, and doesn't handle GCC-style -W flags, so we |
| # don't want to try using GCC-style -W flags. |
| # |
| ac_lbl_cc_dont_try_gcc_dashW=yes |
| ;; |
| |
| irix*) |
| # |
| # MIPS C, which is what we presume we're using, doesn't |
| # necessarily exit with a non-zero exit status if we |
| # hand it an invalid -W flag, can't be forced to do |
| # so, and doesn't handle GCC-style -W flags, so we |
| # don't want to try using GCC-style -W flags. |
| # |
| ac_lbl_cc_dont_try_gcc_dashW=yes |
| # |
| # It also, apparently, defaults to "char" being |
| # unsigned, unlike most other C implementations; |
| # I suppose we could say "signed char" whenever |
| # we want to guarantee a signed "char", but let's |
| # just force signed chars. |
| # |
| # -xansi is normally the default, but the |
| # configure script was setting it; perhaps -cckr |
| # was the default in the Old Days. (Then again, |
| # that would probably be for backwards compatibility |
| # in the days when ANSI C was Shiny and New, i.e. |
| # 1989 and the early '90's, so maybe we can just |
| # drop support for those compilers.) |
| # |
| # -g is equivalent to -g2, which turns off |
| # optimization; we choose -g3, which generates |
| # debugging information but doesn't turn off |
| # optimization (even if the optimization would |
| # cause inaccuracies in debugging). |
| # |
| $1="$$1 -xansi -signed -g3" |
| ;; |
| |
| osf*) |
| # |
| # Presumed to be DEC OSF/1, Digital UNIX, or |
| # Tru64 UNIX. |
| # |
| # The DEC C compiler, which is what we presume we're |
| # using, doesn't exit with a non-zero exit status if we |
| # hand it an invalid -W flag, can't be forced to do |
| # so, and doesn't handle GCC-style -W flags, so we |
| # don't want to try using GCC-style -W flags. |
| # |
| ac_lbl_cc_dont_try_gcc_dashW=yes |
| # |
| # -g is equivalent to -g2, which turns off |
| # optimization; we choose -g3, which generates |
| # debugging information but doesn't turn off |
| # optimization (even if the optimization would |
| # cause inaccuracies in debugging). |
| # |
| $1="$$1 -g3" |
| ;; |
| |
| solaris*) |
| # |
| # Assumed to be Sun C, which requires -errwarn to force |
| # warnings to be treated as errors. |
| # |
| ac_lbl_cc_force_warning_errors=-errwarn |
| |
| # |
| # Try to have the compiler default to hiding symbols, |
| # so that only symbols explicitly exported with |
| # PCAP_API will be visible outside (shared) libraries. |
| # |
| AC_LBL_CHECK_COMPILER_OPT($1, -xldscope=hidden) |
| ;; |
| |
| ultrix*) |
| AC_MSG_CHECKING(that Ultrix $CC hacks const in prototypes) |
| AC_CACHE_VAL(ac_cv_lbl_cc_const_proto, |
| AC_TRY_COMPILE( |
| [#include <sys/types.h>], |
| [struct a { int b; }; |
| void c(const struct a *)], |
| ac_cv_lbl_cc_const_proto=yes, |
| ac_cv_lbl_cc_const_proto=no)) |
| AC_MSG_RESULT($ac_cv_lbl_cc_const_proto) |
| if test $ac_cv_lbl_cc_const_proto = no ; then |
| AC_DEFINE(const,[], |
| [to handle Ultrix compilers that don't support const in prototypes]) |
| fi |
| ;; |
| esac |
| $1="$$1 -O" |
| fi |
| ]) |
| |
| dnl |
| dnl Check whether, if you pass an unknown warning option to the |
| dnl compiler, it fails or just prints a warning message and succeeds. |
| dnl Set ac_lbl_unknown_warning_option_error to the appropriate flag |
| dnl to force an error if it would otherwise just print a warning message |
| dnl and succeed. |
| dnl |
| AC_DEFUN(AC_LBL_CHECK_UNKNOWN_WARNING_OPTION_ERROR, |
| [ |
| AC_MSG_CHECKING([whether the compiler fails when given an unknown warning option]) |
| save_CFLAGS="$CFLAGS" |
| CFLAGS="$CFLAGS -Wxyzzy-this-will-never-succeed-xyzzy" |
| AC_TRY_COMPILE( |
| [], |
| [return 0], |
| [ |
| AC_MSG_RESULT([no]) |
| # |
| # We're assuming this is clang, where |
| # -Werror=unknown-warning-option is the appropriate |
| # option to force the compiler to fail. |
| # |
| ac_lbl_unknown_warning_option_error="-Werror=unknown-warning-option" |
| ], |
| [ |
| AC_MSG_RESULT([yes]) |
| ]) |
| CFLAGS="$save_CFLAGS" |
| ]) |
| |
| dnl |
| dnl Check whether the compiler option specified as the second argument |
| dnl is supported by the compiler and, if so, add it to the macro |
| dnl specified as the first argument |
| dnl |
| dnl If a third argument is supplied, treat it as C code to be compiled |
| dnl with the flag in question, and the "treat warnings as errors" flag |
| dnl set, and don't add the flag to the first argument if the compile |
| dnl fails; this is for warning options cause problems that can't be |
| dnl worked around. If a third argument is supplied, a fourth argument |
| dnl should also be supplied; it's a message describing what the test |
| dnl program is checking. |
| dnl |
| AC_DEFUN(AC_LBL_CHECK_COMPILER_OPT, |
| [ |
| AC_MSG_CHECKING([whether the compiler supports the $2 option]) |
| save_CFLAGS="$CFLAGS" |
| if expr "x$2" : "x-W.*" >/dev/null |
| then |
| CFLAGS="$CFLAGS $ac_lbl_unknown_warning_option_error $2" |
| elif expr "x$2" : "x-f.*" >/dev/null |
| then |
| CFLAGS="$CFLAGS -Werror $2" |
| elif expr "x$2" : "x-m.*" >/dev/null |
| then |
| CFLAGS="$CFLAGS -Werror $2" |
| else |
| CFLAGS="$CFLAGS $2" |
| fi |
| AC_TRY_COMPILE( |
| [], |
| [return 0], |
| [ |
| AC_MSG_RESULT([yes]) |
| can_add_to_cflags=yes |
| # |
| # The compile supports this; do we have some C code for |
| # which the warning should *not* appear? |
| # We test the fourth argument because the third argument |
| # could contain quotes, breaking the test. |
| # |
| if test "x$4" != "x" |
| then |
| CFLAGS="$CFLAGS $ac_lbl_cc_force_warning_errors" |
| AC_MSG_CHECKING(whether $2 $4) |
| AC_COMPILE_IFELSE( |
| [AC_LANG_SOURCE($3)], |
| [ |
| # |
| # Not a problem. |
| # |
| AC_MSG_RESULT(no) |
| ], |
| [ |
| # |
| # A problem. |
| # |
| AC_MSG_RESULT(yes) |
| can_add_to_cflags=no |
| ]) |
| fi |
| CFLAGS="$save_CFLAGS" |
| if test x"$can_add_to_cflags" = "xyes" |
| then |
| $1="$$1 $2" |
| fi |
| ], |
| [ |
| AC_MSG_RESULT([no]) |
| CFLAGS="$save_CFLAGS" |
| ]) |
| ]) |
| |
| dnl |
| dnl Check whether the compiler supports an option to generate |
| dnl Makefile-style dependency lines |
| dnl |
| dnl GCC uses -M for this. Non-GCC compilers that support this |
| dnl use a variety of flags, including but not limited to -M. |
| dnl |
| dnl We test whether the flag in question is supported, as older |
| dnl versions of compilers might not support it. |
| dnl |
| dnl We don't try all the possible flags, just in case some flag means |
| dnl "generate dependencies" on one compiler but means something else |
| dnl on another compiler. |
| dnl |
| dnl Most compilers that support this send the output to the standard |
| dnl output by default. IBM's XLC, however, supports -M but sends |
| dnl the output to {sourcefile-basename}.u, and AIX has no /dev/stdout |
| dnl to work around that, so we don't bother with XLC. |
| dnl |
| AC_DEFUN(AC_LBL_CHECK_DEPENDENCY_GENERATION_OPT, |
| [ |
| AC_MSG_CHECKING([whether the compiler supports generating dependencies]) |
| if test "$GCC" = yes ; then |
| # |
| # GCC, or a compiler deemed to be GCC by AC_PROG_CC (even |
| # though it's not); we assume that, in this case, the flag |
| # would be -M. |
| # |
| ac_lbl_dependency_flag="-M" |
| else |
| # |
| # Not GCC or a compiler deemed to be GCC; what platform is |
| # this? (We're assuming that if the compiler isn't GCC |
| # it's the compiler from the vendor of the OS; that won't |
| # necessarily be true for x86 platforms, where it might be |
| # the Intel C compiler.) |
| # |
| case "$host_os" in |
| |
| irix*|osf*|darwin*) |
| # |
| # MIPS C for IRIX, DEC C, and clang all use -M. |
| # |
| ac_lbl_dependency_flag="-M" |
| ;; |
| |
| solaris*) |
| # |
| # Sun C uses -xM. |
| # |
| ac_lbl_dependency_flag="-xM" |
| ;; |
| |
| hpux*) |
| # |
| # HP's older C compilers don't support this. |
| # HP's newer C compilers support this with |
| # either +M or +Make; the older compilers |
| # interpret +M as something completely |
| # different, so we use +Make so we don't |
| # think it works with the older compilers. |
| # |
| ac_lbl_dependency_flag="+Make" |
| ;; |
| |
| *) |
| # |
| # Not one of the above; assume no support for |
| # generating dependencies. |
| # |
| ac_lbl_dependency_flag="" |
| ;; |
| esac |
| fi |
| |
| # |
| # Is ac_lbl_dependency_flag defined and, if so, does the compiler |
| # complain about it? |
| # |
| # Note: clang doesn't seem to exit with an error status when handed |
| # an unknown non-warning error, even if you pass it |
| # -Werror=unknown-warning-option. However, it always supports |
| # -M, so the fact that this test always succeeds with clang |
| # isn't an issue. |
| # |
| if test ! -z "$ac_lbl_dependency_flag"; then |
| AC_LANG_CONFTEST( |
| [AC_LANG_SOURCE([[int main(void) { return 0; }]])]) |
| if AC_RUN_LOG([eval "$CC $ac_lbl_dependency_flag conftest.c >/dev/null 2>&1"]); then |
| AC_MSG_RESULT([yes, with $ac_lbl_dependency_flag]) |
| DEPENDENCY_CFLAG="$ac_lbl_dependency_flag" |
| MKDEP='${top_srcdir}/mkdep' |
| else |
| AC_MSG_RESULT([no]) |
| # |
| # We can't run mkdep, so have "make depend" do |
| # nothing. |
| # |
| MKDEP='${top_srcdir}/nomkdep' |
| fi |
| rm -rf conftest* |
| else |
| AC_MSG_RESULT([no]) |
| # |
| # We can't run mkdep, so have "make depend" do |
| # nothing. |
| # |
| MKDEP='${top_srcdir}/nomkdep' |
| fi |
| AC_SUBST(DEPENDENCY_CFLAG) |
| AC_SUBST(MKDEP) |
| ]) |
| |
| dnl |
| dnl Determine what options are needed to build a shared library |
| dnl |
| dnl usage: |
| dnl |
| dnl AC_LBL_SHLIBS_INIT |
| dnl |
| dnl results: |
| dnl |
| dnl V_SHLIB_CCOPT (modified to build position-independent code) |
| dnl V_SHLIB_CMD |
| dnl V_SHLIB_OPT |
| dnl V_SONAME_OPT |
| dnl V_RPATH_OPT |
| dnl |
| AC_DEFUN(AC_LBL_SHLIBS_INIT, |
| [AC_PREREQ(2.50) |
| if test "$GCC" = yes ; then |
| # |
| # On platforms where we build a shared library: |
| # |
| # add options to generate position-independent code, |
| # if necessary (it's the default in AIX and Darwin/macOS); |
| # |
| # define option to set the soname of the shared library, |
| # if the OS supports that; |
| # |
| # add options to specify, at link time, a directory to |
| # add to the run-time search path, if that's necessary. |
| # |
| V_SHLIB_CMD="\$(CC)" |
| V_SHLIB_OPT="-shared" |
| case "$host_os" in |
| |
| aix*) |
| ;; |
| |
| freebsd*|netbsd*|openbsd*|dragonfly*|linux*|osf*|haiku*|midipix*) |
| # |
| # Platforms where the linker is the GNU linker |
| # or accepts command-line arguments like |
| # those the GNU linker accepts. |
| # |
| # Some instruction sets require -fPIC on some |
| # operating systems. Check for them. If you |
| # have a combination that requires it, add it |
| # here. |
| # |
| PIC_OPT=-fpic |
| case "$host_cpu" in |
| |
| sparc64*) |
| case "$host_os" in |
| |
| freebsd*|openbsd*|linux*) |
| PIC_OPT=-fPIC |
| ;; |
| esac |
| ;; |
| esac |
| V_SHLIB_CCOPT="$V_SHLIB_CCOPT $PIC_OPT" |
| V_SONAME_OPT="-Wl,-soname," |
| V_RPATH_OPT="-Wl,-rpath," |
| ;; |
| |
| hpux*) |
| V_SHLIB_CCOPT="$V_SHLIB_CCOPT -fpic" |
| # |
| # XXX - this assumes GCC is using the HP linker, |
| # rather than the GNU linker, and that the "+h" |
| # option is used on all HP-UX platforms, both .sl |
| # and .so. |
| # |
| V_SONAME_OPT="-Wl,+h," |
| # |
| # By default, directories specified with -L |
| # are added to the run-time search path, so |
| # we don't add them in pcap-config. |
| # |
| ;; |
| |
| solaris*) |
| V_SHLIB_CCOPT="$V_SHLIB_CCOPT -fpic" |
| # |
| # XXX - this assumes GCC is using the Sun linker, |
| # rather than the GNU linker. |
| # |
| V_SONAME_OPT="-Wl,-h," |
| V_RPATH_OPT="-Wl,-R," |
| ;; |
| esac |
| else |
| # |
| # Set the appropriate compiler flags and, on platforms |
| # where we build a shared library: |
| # |
| # add options to generate position-independent code, |
| # if necessary (it's the default in Darwin/macOS); |
| # |
| # if we generate ".so" shared libraries, define the |
| # appropriate options for building the shared library; |
| # |
| # add options to specify, at link time, a directory to |
| # add to the run-time search path, if that's necessary. |
| # |
| # Note: spaces after V_SONAME_OPT are significant; on |
| # some platforms the soname is passed with a GCC-like |
| # "-Wl,-soname,{soname}" option, with the soname part |
| # of the option, while on other platforms the C compiler |
| # driver takes it as a regular option with the soname |
| # following the option. The same applies to V_RPATH_OPT. |
| # |
| case "$host_os" in |
| |
| aix*) |
| V_SHLIB_CMD="\$(CC)" |
| V_SHLIB_OPT="-G -bnoentry -bexpall" |
| ;; |
| |
| freebsd*|netbsd*|openbsd*|dragonfly*|linux*) |
| # |
| # "cc" is GCC. |
| # |
| V_SHLIB_CCOPT="$V_SHLIB_CCOPT -fpic" |
| V_SHLIB_CMD="\$(CC)" |
| V_SHLIB_OPT="-shared" |
| V_SONAME_OPT="-Wl,-soname," |
| V_RPATH_OPT="-Wl,-rpath," |
| ;; |
| |
| hpux*) |
| V_SHLIB_CCOPT="$V_SHLIB_CCOPT +z" |
| V_SHLIB_CMD="\$(LD)" |
| V_SHLIB_OPT="-b" |
| V_SONAME_OPT="+h " |
| # |
| # By default, directories specified with -L |
| # are added to the run-time search path, so |
| # we don't add them in pcap-config. |
| # |
| ;; |
| |
| osf*) |
| # |
| # Presumed to be DEC OSF/1, Digital UNIX, or |
| # Tru64 UNIX. |
| # |
| V_SHLIB_CMD="\$(CC)" |
| V_SHLIB_OPT="-shared" |
| V_SONAME_OPT="-soname " |
| V_RPATH_OPT="-rpath " |
| ;; |
| |
| solaris*) |
| V_SHLIB_CCOPT="$V_SHLIB_CCOPT -Kpic" |
| V_SHLIB_CMD="\$(CC)" |
| V_SHLIB_OPT="-G" |
| V_SONAME_OPT="-h " |
| V_RPATH_OPT="-R" |
| ;; |
| esac |
| fi |
| ]) |
| |
| # |
| # Try compiling a sample of the type of code that appears in |
| # gencode.c with "inline", "__inline__", and "__inline". |
| # |
| # Autoconf's AC_C_INLINE, at least in autoconf 2.13, isn't good enough, |
| # as it just tests whether a function returning "int" can be inlined; |
| # at least some versions of HP's C compiler can inline that, but can't |
| # inline a function that returns a struct pointer. |
| # |
| # Make sure we use the V_CCOPT flags, because some of those might |
| # disable inlining. |
| # |
| AC_DEFUN(AC_LBL_C_INLINE, |
| [AC_MSG_CHECKING(for inline) |
| save_CFLAGS="$CFLAGS" |
| CFLAGS="$V_CCOPT" |
| AC_CACHE_VAL(ac_cv_lbl_inline, [ |
| ac_cv_lbl_inline="" |
| ac_lbl_cc_inline=no |
| for ac_lbl_inline in inline __inline__ __inline |
| do |
| AC_TRY_COMPILE( |
| [#define inline $ac_lbl_inline |
| static inline struct iltest *foo(void); |
| struct iltest { |
| int iltest1; |
| int iltest2; |
| }; |
| |
| static inline struct iltest * |
| foo() |
| { |
| static struct iltest xxx; |
| |
| return &xxx; |
| }],,ac_lbl_cc_inline=yes,) |
| if test "$ac_lbl_cc_inline" = yes ; then |
| break; |
| fi |
| done |
| if test "$ac_lbl_cc_inline" = yes ; then |
| ac_cv_lbl_inline=$ac_lbl_inline |
| fi]) |
| CFLAGS="$save_CFLAGS" |
| if test ! -z "$ac_cv_lbl_inline" ; then |
| AC_MSG_RESULT($ac_cv_lbl_inline) |
| else |
| AC_MSG_RESULT(no) |
| fi |
| AC_DEFINE_UNQUOTED(inline, $ac_cv_lbl_inline, [Define as token for inline if inlining supported])]) |
| |
| FFF |
| |
| # |
| # Test whether we have __atomic_load_n() and __atomic_store_n(). |
| # |
| # We use AC_TRY_LINK because AC_TRY_COMPILE will succeed, as the |
| # compiler will just think that those functions are undefined, |
| # and perhaps warn about that, but not fail to compile. |
| # |
| AC_DEFUN(AC_PCAP_C___ATOMICS, |
| [ |
| AC_MSG_CHECKING(for __atomic_load_n) |
| AC_CACHE_VAL(ac_cv_have___atomic_load_n, |
| AC_TRY_LINK([], |
| [ |
| int i = 17; |
| int j; |
| j = __atomic_load_n(&i, __ATOMIC_RELAXED); |
| ], |
| ac_have___atomic_load_n=yes, |
| ac_have___atomic_load_n=no)) |
| AC_MSG_RESULT($ac_have___atomic_load_n) |
| if test $ac_have___atomic_load_n = yes ; then |
| AC_DEFINE(HAVE___ATOMIC_LOAD_N, 1, |
| [define if __atomic_load_n is supported by the compiler]) |
| fi |
| |
| AC_MSG_CHECKING(for __atomic_store_n) |
| AC_CACHE_VAL(ac_cv_have___atomic_store_n, |
| AC_TRY_LINK([], |
| [ |
| int i; |
| __atomic_store_n(&i, 17, __ATOMIC_RELAXED); |
| ], |
| ac_have___atomic_store_n=yes, |
| ac_have___atomic_store_n=no)) |
| AC_MSG_RESULT($ac_have___atomic_store_n) |
| if test $ac_have___atomic_store_n = yes ; then |
| AC_DEFINE(HAVE___ATOMIC_STORE_N, 1, |
| [define if __atomic_store_n is supported by the compiler]) |
| fi]) |
| |
| dnl |
| dnl If using gcc, make sure we have ANSI ioctl definitions |
| dnl |
| dnl usage: |
| dnl |
| dnl AC_LBL_FIXINCLUDES |
| dnl |
| AC_DEFUN(AC_LBL_FIXINCLUDES, |
| [if test "$GCC" = yes ; then |
| AC_MSG_CHECKING(for ANSI ioctl definitions) |
| AC_CACHE_VAL(ac_cv_lbl_gcc_fixincludes, |
| AC_TRY_COMPILE( |
| [/* |
| * This generates a "duplicate case value" when fixincludes |
| * has not be run. |
| */ |
| # include <sys/types.h> |
| # include <sys/time.h> |
| # include <sys/ioctl.h> |
| # ifdef HAVE_SYS_IOCCOM_H |
| # include <sys/ioccom.h> |
| # endif], |
| [switch (0) { |
| case _IO('A', 1):; |
| case _IO('B', 1):; |
| }], |
| ac_cv_lbl_gcc_fixincludes=yes, |
| ac_cv_lbl_gcc_fixincludes=no)) |
| AC_MSG_RESULT($ac_cv_lbl_gcc_fixincludes) |
| if test $ac_cv_lbl_gcc_fixincludes = no ; then |
| # Don't cache failure |
| unset ac_cv_lbl_gcc_fixincludes |
| AC_MSG_ERROR(see the INSTALL for more info) |
| fi |
| fi]) |
| |
| dnl |
| dnl Checks to see if union wait is used with WEXITSTATUS() |
| dnl |
| dnl usage: |
| dnl |
| dnl AC_LBL_UNION_WAIT |
| dnl |
| dnl results: |
| dnl |
| dnl DECLWAITSTATUS (defined) |
| dnl |
| AC_DEFUN(AC_LBL_UNION_WAIT, |
| [AC_MSG_CHECKING(if union wait is used) |
| AC_CACHE_VAL(ac_cv_lbl_union_wait, |
| AC_TRY_COMPILE([ |
| # include <sys/types.h> |
| # include <sys/wait.h>], |
| [int status; |
| u_int i = WEXITSTATUS(status); |
| u_int j = waitpid(0, &status, 0);], |
| ac_cv_lbl_union_wait=no, |
| ac_cv_lbl_union_wait=yes)) |
| AC_MSG_RESULT($ac_cv_lbl_union_wait) |
| if test $ac_cv_lbl_union_wait = yes ; then |
| AC_DEFINE(DECLWAITSTATUS,union wait,[type for wait]) |
| else |
| AC_DEFINE(DECLWAITSTATUS,int,[type for wait]) |
| fi]) |
| |
| dnl |
| dnl Checks to see if -R is used |
| dnl |
| dnl usage: |
| dnl |
| dnl AC_LBL_HAVE_RUN_PATH |
| dnl |
| dnl results: |
| dnl |
| dnl ac_cv_lbl_have_run_path (yes or no) |
| dnl |
| AC_DEFUN(AC_LBL_HAVE_RUN_PATH, |
| [AC_MSG_CHECKING(for ${CC-cc} -R) |
| AC_CACHE_VAL(ac_cv_lbl_have_run_path, |
| [echo 'main(){}' > conftest.c |
| ${CC-cc} -o conftest conftest.c -R/a1/b2/c3 >conftest.out 2>&1 |
| if test ! -s conftest.out ; then |
| ac_cv_lbl_have_run_path=yes |
| else |
| ac_cv_lbl_have_run_path=no |
| fi |
| rm -f -r conftest*]) |
| AC_MSG_RESULT($ac_cv_lbl_have_run_path) |
| ]) |
| |
| dnl |
| dnl If the file .devel exists: |
| dnl Add some warning flags if the compiler supports them |
| dnl If an os prototype include exists, symlink os-proto.h to it |
| dnl |
| dnl usage: |
| dnl |
| dnl AC_LBL_DEVEL(copt) |
| dnl |
| dnl results: |
| dnl |
| dnl $1 (copt appended) |
| dnl HAVE_OS_PROTO_H (defined) |
| dnl os-proto.h (symlinked) |
| dnl |
| AC_DEFUN(AC_LBL_DEVEL, |
| [rm -f os-proto.h |
| if test "${LBL_CFLAGS+set}" = set; then |
| $1="$$1 ${LBL_CFLAGS}" |
| fi |
| if test -f .devel ; then |
| # |
| # Skip all the warning option stuff on some compilers. |
| # |
| if test "$ac_lbl_cc_dont_try_gcc_dashW" != yes; then |
| AC_LBL_CHECK_UNKNOWN_WARNING_OPTION_ERROR() |
| AC_LBL_CHECK_COMPILER_OPT($1, -W) |
| AC_LBL_CHECK_COMPILER_OPT($1, -Wall) |
| AC_LBL_CHECK_COMPILER_OPT($1, -Wcomma) |
| AC_LBL_CHECK_COMPILER_OPT($1, -Wdocumentation) |
| AC_LBL_CHECK_COMPILER_OPT($1, -Wformat-nonliteral) |
| AC_LBL_CHECK_COMPILER_OPT($1, -Wmissing-noreturn) |
| AC_LBL_CHECK_COMPILER_OPT($1, -Wmissing-prototypes) |
| AC_LBL_CHECK_COMPILER_OPT($1, -Wmissing-variable-declarations) |
| AC_LBL_CHECK_COMPILER_OPT($1, -Wpointer-arith) |
| AC_LBL_CHECK_COMPILER_OPT($1, -Wpointer-sign) |
| AC_LBL_CHECK_COMPILER_OPT($1, -Wshadow) |
| AC_LBL_CHECK_COMPILER_OPT($1, -Wsign-compare) |
| AC_LBL_CHECK_COMPILER_OPT($1, -Wstrict-prototypes) |
| AC_LBL_CHECK_COMPILER_OPT($1, -Wunused-parameter) |
| AC_LBL_CHECK_COMPILER_OPT($1, -Wused-but-marked-unused) |
| # Warns about safeguards added in case the enums are |
| # extended |
| # AC_LBL_CHECK_COMPILER_OPT($1, -Wcovered-switch-default) |
| # |
| # This can cause problems with ntohs(), ntohl(), |
| # htons(), and htonl() on some platforms, such |
| # as OpenBSD 6.3 with Clang 5.0.1. I guess the |
| # problem is that the macro that ultimately does |
| # the byte-swapping involves a conditional |
| # expression that tests whether the value being |
| # swapped is a compile-time constant or not, |
| # using __builtin_constant_p(), and, depending |
| # on whether it is, does a compile-time swap or |
| # a run-time swap; perhaps the compiler always |
| # considers one of the two results of the |
| # conditional expressin is never evaluated, |
| # because the conditional check is done at |
| # compile time, and thus always says "that |
| # expression is never executed". |
| # |
| # (Perhaps there should be a way of flagging |
| # an expression that you *want* evaluated at |
| # compile time, so that the compiler 1) warns |
| # if it *can't* be evaluated at compile time |
| # and 2) *doesn't* warn that the true or false |
| # branch will never be reached.) |
| # |
| AC_LBL_CHECK_COMPILER_OPT($1, -Wunreachable-code, |
| [ |
| #include <arpa/inet.h> |
| |
| unsigned short |
| testme(unsigned short a) |
| { |
| return ntohs(a); |
| } |
| ], |
| [generates warnings from ntohs()]) |
| AC_LBL_CHECK_COMPILER_OPT($1, -Wshorten-64-to-32) |
| fi |
| AC_LBL_CHECK_DEPENDENCY_GENERATION_OPT() |
| # |
| # We used to set -n32 for IRIX 6 when not using GCC (presumed |
| # to mean that we're using MIPS C or MIPSpro C); it specified |
| # the "new" faster 32-bit ABI, introduced in IRIX 6.2. I'm |
| # not sure why that would be something to do *only* with a |
| # .devel file; why should the ABI for which we produce code |
| # depend on .devel? |
| # |
| os=`echo $host_os | sed -e 's/\([[0-9]][[0-9]]*\)[[^0-9]].*$/\1/'` |
| name="lbl/os-$os.h" |
| if test -f $name ; then |
| ln -s $name os-proto.h |
| AC_DEFINE(HAVE_OS_PROTO_H, 1, |
| [if there's an os_proto.h for this platform, to use additional prototypes]) |
| else |
| AC_MSG_WARN(can't find $name) |
| fi |
| fi]) |
| |
| dnl |
| dnl Improved version of AC_CHECK_LIB |
| dnl |
| dnl Thanks to John Hawkinson (jhawk@mit.edu) |
| dnl |
| dnl usage: |
| dnl |
| dnl AC_LBL_CHECK_LIB(LIBRARY, FUNCTION [, ACTION-IF-FOUND [, |
| dnl ACTION-IF-NOT-FOUND [, OTHER-LIBRARIES]]]) |
| dnl |
| dnl results: |
| dnl |
| dnl LIBS |
| dnl |
| dnl XXX - "AC_LBL_LIBRARY_NET" was redone to use "AC_SEARCH_LIBS" |
| dnl rather than "AC_LBL_CHECK_LIB", so this isn't used any more. |
| dnl We keep it around for reference purposes in case it's ever |
| dnl useful in the future. |
| dnl |
| |
| define(AC_LBL_CHECK_LIB, |
| [AC_MSG_CHECKING([for $2 in -l$1]) |
| dnl Use a cache variable name containing the library, function |
| dnl name, and extra libraries to link with, because the test really is |
| dnl for library $1 defining function $2, when linked with potinal |
| dnl library $5, not just for library $1. Separate tests with the same |
| dnl $1 and different $2's or $5's may have different results. |
| ac_lib_var=`echo $1['_']$2['_']$5 | sed 'y%./+- %__p__%'` |
| AC_CACHE_VAL(ac_cv_lbl_lib_$ac_lib_var, |
| [ac_save_LIBS="$LIBS" |
| LIBS="-l$1 $5 $LIBS" |
| AC_TRY_LINK(dnl |
| ifelse([$2], [main], , dnl Avoid conflicting decl of main. |
| [/* Override any gcc2 internal prototype to avoid an error. */ |
| ]ifelse(AC_LANG, CPLUSPLUS, [#ifdef __cplusplus |
| extern "C" |
| #endif |
| ])dnl |
| [/* We use char because int might match the return type of a gcc2 |
| builtin and then its argument prototype would still apply. */ |
| char $2(); |
| ]), |
| [$2()], |
| eval "ac_cv_lbl_lib_$ac_lib_var=yes", |
| eval "ac_cv_lbl_lib_$ac_lib_var=no") |
| LIBS="$ac_save_LIBS" |
| ])dnl |
| if eval "test \"`echo '$ac_cv_lbl_lib_'$ac_lib_var`\" = yes"; then |
| AC_MSG_RESULT(yes) |
| ifelse([$3], , |
| [changequote(, )dnl |
| ac_tr_lib=HAVE_LIB`echo $1 | sed -e 's/[^a-zA-Z0-9_]/_/g' \ |
| -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'` |
| changequote([, ])dnl |
| AC_DEFINE_UNQUOTED($ac_tr_lib) |
| LIBS="-l$1 $LIBS" |
| ], [$3]) |
| else |
| AC_MSG_RESULT(no) |
| ifelse([$4], , , [$4 |
| ])dnl |
| fi |
| ]) |
| |
| dnl |
| dnl AC_LBL_LIBRARY_NET |
| dnl |
| dnl This test is for network applications that need socket functions and |
| dnl getaddrinfo()/getnameinfo()-ish functions. We now require |
| dnl getaddrinfo() and getnameinfo(). We also prefer versions of |
| dnl recvmsg() that conform to the Single UNIX Specification, so that we |
| dnl can check whether a datagram received with recvmsg() was truncated |
| dnl when received due to the buffer being too small. |
| dnl |
| dnl On most operating systems, they're available in the system library. |
| dnl |
| dnl Under Solaris, we need to link with libsocket and libnsl to get |
| dnl getaddrinfo() and getnameinfo() and, if we have libxnet, we need to |
| dnl link with libxnet before libsocket to get a version of recvmsg() |
| dnl that conforms to the Single UNIX Specification. |
| dnl |
| dnl We use getaddrinfo() because we want a portable thread-safe way |
| dnl of getting information for a host name or port; there exist _r |
| dnl versions of gethostbyname() and getservbyname() on some platforms, |
| dnl but not on all platforms. |
| dnl |
| AC_DEFUN(AC_LBL_LIBRARY_NET, [ |
| # |
| # Most operating systems have getaddrinfo() in the default searched |
| # libraries (i.e. libc). Check there first. |
| # |
| AC_CHECK_FUNC(getaddrinfo,, |
| [ |
| # |
| # Not found in the standard system libraries. |
| # Try libsocket, which requires libnsl. |
| # |
| AC_CHECK_LIB(socket, getaddrinfo, |
| [ |
| # |
| # OK, we found it in libsocket. |
| # |
| LIBS="-lsocket -lnsl $LIBS" |
| ], |
| [ |
| AC_CHECK_LIB(network, getaddrinfo, |
| [ |
| # |
| # OK, we found it in libnetwork on Haiku. |
| # |
| LIBS="-lnetwork $LIBS" |
| ], |
| [ |
| # |
| # We didn't find it. |
| # |
| AC_MSG_ERROR([getaddrinfo is required, but wasn't found]) |
| ]) |
| ], -lnsl) |
| |
| # |
| # OK, do we have recvmsg() in libxnet? |
| # We also link with libsocket and libnsl. |
| # |
| AC_CHECK_LIB(xnet, recvmsg, |
| [ |
| # |
| # Yes - link with it as well. |
| # |
| LIBS="-lxnet $LIBS" |
| ], , -lsocket -lnsl) |
| ]) |
| # DLPI needs putmsg under HPUX so test for -lstr while we're at it |
| AC_SEARCH_LIBS(putmsg, str) |
| ]) |
| |
| m4_ifndef([AC_CONFIG_MACRO_DIRS], [m4_defun([_AM_CONFIG_MACRO_DIRS], [])m4_defun([AC_CONFIG_MACRO_DIRS], [_AM_CONFIG_MACRO_DIRS($@)])]) |
| dnl pkg.m4 - Macros to locate and utilise pkg-config. -*- Autoconf -*- |
| dnl serial 11 (pkg-config-0.29) |
| dnl |
| dnl Copyright © 2004 Scott James Remnant <scott@netsplit.com>. |
| dnl Copyright © 2012-2015 Dan Nicholson <dbn.lists@gmail.com> |
| dnl |
| dnl This program is free software; you can redistribute it and/or modify |
| dnl it under the terms of the GNU General Public License as published by |
| dnl the Free Software Foundation; either version 2 of the License, or |
| dnl (at your option) any later version. |
| dnl |
| dnl This program is distributed in the hope that it will be useful, but |
| dnl WITHOUT ANY WARRANTY; without even the implied warranty of |
| dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| dnl General Public License for more details. |
| dnl |
| dnl You should have received a copy of the GNU General Public License |
| dnl along with this program; if not, write to the Free Software |
| dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA |
| dnl 02111-1307, USA. |
| dnl |
| dnl As a special exception to the GNU General Public License, if you |
| dnl distribute this file as part of a program that contains a |
| dnl configuration script generated by Autoconf, you may include it under |
| dnl the same distribution terms that you use for the rest of that |
| dnl program. |
| |
| dnl PKG_PREREQ(MIN-VERSION) |
| dnl ----------------------- |
| dnl Since: 0.29 |
| dnl |
| dnl Verify that the version of the pkg-config macros are at least |
| dnl MIN-VERSION. Unlike PKG_PROG_PKG_CONFIG, which checks the user's |
| dnl installed version of pkg-config, this checks the developer's version |
| dnl of pkg.m4 when generating configure. |
| dnl |
| dnl To ensure that this macro is defined, also add: |
| dnl m4_ifndef([PKG_PREREQ], |
| dnl [m4_fatal([must install pkg-config 0.29 or later before running autoconf/autogen])]) |
| dnl |
| dnl See the "Since" comment for each macro you use to see what version |
| dnl of the macros you require. |
| m4_defun([PKG_PREREQ], |
| [m4_define([PKG_MACROS_VERSION], [0.29]) |
| m4_if(m4_version_compare(PKG_MACROS_VERSION, [$1]), -1, |
| [m4_fatal([pkg.m4 version $1 or higher is required but ]PKG_MACROS_VERSION[ found])]) |
| ])dnl PKG_PREREQ |
| |
| dnl PKG_PROG_PKG_CONFIG([MIN-VERSION]) |
| dnl ---------------------------------- |
| dnl Since: 0.16 |
| dnl |
| dnl Search for the pkg-config tool and set the PKG_CONFIG variable to |
| dnl first found in the path. Checks that the version of pkg-config found |
| dnl is at least MIN-VERSION. If MIN-VERSION is not specified, 0.9.0 is |
| dnl used since that's the first version where most current features of |
| dnl pkg-config existed. |
| AC_DEFUN([PKG_PROG_PKG_CONFIG], |
| [m4_pattern_forbid([^_?PKG_[A-Z_]+$]) |
| m4_pattern_allow([^PKG_CONFIG(_(PATH|LIBDIR|SYSROOT_DIR|ALLOW_SYSTEM_(CFLAGS|LIBS)))?$]) |
| m4_pattern_allow([^PKG_CONFIG_(DISABLE_UNINSTALLED|TOP_BUILD_DIR|DEBUG_SPEW)$]) |
| AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility]) |
| AC_ARG_VAR([PKG_CONFIG_PATH], [directories to add to pkg-config's search path]) |
| AC_ARG_VAR([PKG_CONFIG_LIBDIR], [path overriding pkg-config's built-in search path]) |
| |
| if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then |
| AC_PATH_TOOL([PKG_CONFIG], [pkg-config]) |
| fi |
| if test -n "$PKG_CONFIG"; then |
| _pkg_min_version=m4_default([$1], [0.9.0]) |
| AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version]) |
| if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then |
| AC_MSG_RESULT([yes]) |
| else |
| AC_MSG_RESULT([no]) |
| PKG_CONFIG="" |
| fi |
| fi[]dnl |
| ])dnl PKG_PROG_PKG_CONFIG |
| |
| dnl PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND]) |
| dnl ------------------------------------------------------------------- |
| dnl Since: 0.18 |
| dnl |
| dnl Check to see whether a particular set of modules exists. Similar to |
| dnl PKG_CHECK_MODULES(), but does not set variables or print errors. |
| dnl |
| dnl Please remember that m4 expands AC_REQUIRE([PKG_PROG_PKG_CONFIG]) |
| dnl only at the first occurrence in configure.ac, so if the first place |
| dnl it's called might be skipped (such as if it is within an "if", you |
| dnl have to call PKG_CHECK_EXISTS manually |
| AC_DEFUN([PKG_CHECK_EXISTS], |
| [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl |
| if test -n "$PKG_CONFIG" && \ |
| AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then |
| m4_default([$2], [:]) |
| m4_ifvaln([$3], [else |
| $3])dnl |
| fi]) |
| |
| dnl _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES]) |
| dnl --------------------------------------------- |
| dnl Internal wrapper calling pkg-config via PKG_CONFIG and setting |
| dnl pkg_failed based on the result. |
| m4_define([_PKG_CONFIG], |
| [if test -n "$$1"; then |
| pkg_cv_[]$1="$$1" |
| elif test -n "$PKG_CONFIG"; then |
| PKG_CHECK_EXISTS([$3], |
| [pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null` |
| test "x$?" != "x0" && pkg_failed=yes ], |
| [pkg_failed=yes]) |
| else |
| pkg_failed=untried |
| fi[]dnl |
| ])dnl _PKG_CONFIG |
| |
| dnl _PKG_SHORT_ERRORS_SUPPORTED |
| dnl --------------------------- |
| dnl Internal check to see if pkg-config supports short errors. |
| AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED], |
| [AC_REQUIRE([PKG_PROG_PKG_CONFIG]) |
| if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then |
| _pkg_short_errors_supported=yes |
| else |
| _pkg_short_errors_supported=no |
| fi[]dnl |
| ])dnl _PKG_SHORT_ERRORS_SUPPORTED |
| |
| |
| dnl PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND], |
| dnl [ACTION-IF-NOT-FOUND]) |
| dnl -------------------------------------------------------------- |
| dnl Since: 0.4.0 |
| dnl |
| dnl Note that if there is a possibility the first call to |
| dnl PKG_CHECK_MODULES might not happen, you should be sure to include an |
| dnl explicit call to PKG_PROG_PKG_CONFIG in your configure.ac |
| AC_DEFUN([PKG_CHECK_MODULES], |
| [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl |
| AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl |
| AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl |
| |
| pkg_failed=no |
| AC_MSG_CHECKING([for $1]) |
| |
| _PKG_CONFIG([$1][_CFLAGS], [cflags], [$2]) |
| _PKG_CONFIG([$1][_LIBS], [libs], [$2]) |
| |
| m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS |
| and $1[]_LIBS to avoid the need to call pkg-config. |
| See the pkg-config man page for more details.]) |
| |
| if test $pkg_failed = yes; then |
| AC_MSG_RESULT([no]) |
| _PKG_SHORT_ERRORS_SUPPORTED |
| if test $_pkg_short_errors_supported = yes; then |
| $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "$2" 2>&1` |
| else |
| $1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "$2" 2>&1` |
| fi |
| # Put the nasty error message in config.log where it belongs |
| echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD |
| |
| m4_default([$4], [AC_MSG_ERROR( |
| [Package requirements ($2) were not met: |
| |
| $$1_PKG_ERRORS |
| |
| Consider adjusting the PKG_CONFIG_PATH environment variable if you |
| installed software in a non-standard prefix. |
| |
| _PKG_TEXT])[]dnl |
| ]) |
| elif test $pkg_failed = untried; then |
| AC_MSG_RESULT([no]) |
| m4_default([$4], [AC_MSG_FAILURE( |
| [The pkg-config script could not be found or is too old. Make sure it |
| is in your PATH or set the PKG_CONFIG environment variable to the full |
| path to pkg-config. |
| |
| _PKG_TEXT |
| |
| To get pkg-config, see <https://pkg-config.freedesktop.org/>.])[]dnl |
| ]) |
| else |
| $1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS |
| $1[]_LIBS=$pkg_cv_[]$1[]_LIBS |
| AC_MSG_RESULT([yes]) |
| $3 |
| fi[]dnl |
| ])dnl PKG_CHECK_MODULES |
| |
| |
| dnl PKG_CHECK_MODULES_STATIC(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND], |
| dnl [ACTION-IF-NOT-FOUND]) |
| dnl --------------------------------------------------------------------- |
| dnl Since: 0.29 |
| dnl |
| dnl Checks for existence of MODULES and gathers its build flags with |
| dnl static libraries enabled. Sets VARIABLE-PREFIX_CFLAGS from --cflags |
| dnl and VARIABLE-PREFIX_LIBS from --libs. |
| dnl |
| dnl Note that if there is a possibility the first call to |
| dnl PKG_CHECK_MODULES_STATIC might not happen, you should be sure to |
| dnl include an explicit call to PKG_PROG_PKG_CONFIG in your |
| dnl configure.ac. |
| AC_DEFUN([PKG_CHECK_MODULES_STATIC], |
| [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl |
| _save_PKG_CONFIG=$PKG_CONFIG |
| PKG_CONFIG="$PKG_CONFIG --static" |
| PKG_CHECK_MODULES($@) |
| PKG_CONFIG=$_save_PKG_CONFIG[]dnl |
| ])dnl PKG_CHECK_MODULES_STATIC |
| |
| |
| dnl PKG_INSTALLDIR([DIRECTORY]) |
| dnl ------------------------- |
| dnl Since: 0.27 |
| dnl |
| dnl Substitutes the variable pkgconfigdir as the location where a module |
| dnl should install pkg-config .pc files. By default the directory is |
| dnl $libdir/pkgconfig, but the default can be changed by passing |
| dnl DIRECTORY. The user can override through the --with-pkgconfigdir |
| dnl parameter. |
| AC_DEFUN([PKG_INSTALLDIR], |
| [m4_pushdef([pkg_default], [m4_default([$1], ['${libdir}/pkgconfig'])]) |
| m4_pushdef([pkg_description], |
| [pkg-config installation directory @<:@]pkg_default[@:>@]) |
| AC_ARG_WITH([pkgconfigdir], |
| [AS_HELP_STRING([--with-pkgconfigdir], pkg_description)],, |
| [with_pkgconfigdir=]pkg_default) |
| AC_SUBST([pkgconfigdir], [$with_pkgconfigdir]) |
| m4_popdef([pkg_default]) |
| m4_popdef([pkg_description]) |
| ])dnl PKG_INSTALLDIR |
| |
| |
| dnl PKG_NOARCH_INSTALLDIR([DIRECTORY]) |
| dnl -------------------------------- |
| dnl Since: 0.27 |
| dnl |
| dnl Substitutes the variable noarch_pkgconfigdir as the location where a |
| dnl module should install arch-independent pkg-config .pc files. By |
| dnl default the directory is $datadir/pkgconfig, but the default can be |
| dnl changed by passing DIRECTORY. The user can override through the |
| dnl --with-noarch-pkgconfigdir parameter. |
| AC_DEFUN([PKG_NOARCH_INSTALLDIR], |
| [m4_pushdef([pkg_default], [m4_default([$1], ['${datadir}/pkgconfig'])]) |
| m4_pushdef([pkg_description], |
| [pkg-config arch-independent installation directory @<:@]pkg_default[@:>@]) |
| AC_ARG_WITH([noarch-pkgconfigdir], |
| [AS_HELP_STRING([--with-noarch-pkgconfigdir], pkg_description)],, |
| [with_noarch_pkgconfigdir=]pkg_default) |
| AC_SUBST([noarch_pkgconfigdir], [$with_noarch_pkgconfigdir]) |
| m4_popdef([pkg_default]) |
| m4_popdef([pkg_description]) |
| ])dnl PKG_NOARCH_INSTALLDIR |
| |
| |
| dnl PKG_CHECK_VAR(VARIABLE, MODULE, CONFIG-VARIABLE, |
| dnl [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND]) |
| dnl ------------------------------------------- |
| dnl Since: 0.28 |
| dnl |
| dnl Retrieves the value of the pkg-config variable for the given module. |
| AC_DEFUN([PKG_CHECK_VAR], |
| [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl |
| AC_ARG_VAR([$1], [value of $3 for $2, overriding pkg-config])dnl |
| |
| _PKG_CONFIG([$1], [variable="][$3]["], [$2]) |
| AS_VAR_COPY([$1], [pkg_cv_][$1]) |
| |
| AS_VAR_IF([$1], [""], [$5], [$4])dnl |
| ])dnl PKG_CHECK_VAR |
| |