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configure: fix pthread check with static boringssl

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A shared boringssl/OpenSSL library requires -lcrypto only for linking.
A static build additionally requires `-ldl -lpthread`. In the latter
case `-lpthread` is added to LIBS which prevented `-pthread` from being
added to CFLAGS. Clear LIBS to fix linking failures for libtest tests.
This commit is contained in:
Peter Wu 2020-05-20 23:36:21 +02:00
parent f6c6a159f5
commit 06e266e0a5
1 changed files with 12 additions and 1 deletions
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13
configure.ac
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@ -1744,6 +1744,8 @@ if test -z "$ssl_backends" -o "x$OPT_SSL" != xno &&
# only set this if pkg-config wasn't used
CPPFLAGS="$CLEANCPPFLAGS -I$PREFIX_OPENSSL/include/openssl -I$PREFIX_OPENSSL/include"
fi
# Linking previously failed, try extra paths from --with-ssl or pkg-config.
# Use a different function name to avoid reusing the earlier cached result.
AC_CHECK_LIB(crypto, HMAC_Init_ex,[
HAVECRYPTO="yes"
LIBS="-lcrypto $LIBS"], [
@ -1765,6 +1767,7 @@ if test -z "$ssl_backends" -o "x$OPT_SSL" != xno &&
[
AC_MSG_RESULT(no)
dnl ok, so what about both -ldl and -lpthread?
dnl This may be necessary for static libraries.
AC_MSG_CHECKING([OpenSSL linking with -ldl and -lpthread])
LIBS="$CLEANLIBS -lcrypto -ldl -lpthread"
@ -4312,9 +4315,17 @@ if test "$want_pthreads" != "no"; then
AC_CHECK_HEADER(pthread.h,
[ AC_DEFINE(HAVE_PTHREAD_H, 1, [if you have <pthread.h>])
save_CFLAGS="$CFLAGS"
dnl When statically linking against boringssl, -lpthread is added to LIBS.
dnl Make sure to that this does not pass the check below, we really want
dnl -pthread in CFLAGS as recommended for GCC. This also ensures that
dnl lib1541 and lib1565 tests are built with these options. Otherwise
dnl they fail the build since tests/libtest/Makefile.am clears LIBS.
save_LIBS="$LIBS"
dnl first check for function without lib
LIBS=
dnl Check for libc variants without a separate pthread lib like bionic
AC_CHECK_FUNC(pthread_create, [USE_THREADS_POSIX=1] )
LIBS="$save_LIBS"
dnl on HPUX, life is more complicated...
case $host in