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m4/libevent_openssl.m4: fix detection of openssl

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Since commit 506df426dbeb0187bbd3654bd286b4100628fb16, OPENSSL_INCS is
added to CPPFLAGS without any white space, as a result openssl detection
fails on:
configure:10395: checking openssl/ssl.h usability
configure:10395: /home/fabrice/buildroot-test/buildroot/output/host/bin/riscv32-linux-gcc -c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os   -Wall -fno-strict-aliasing -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64-I/home/fabrice/buildroot-test/buildroot/output/host/bin/../riscv32-buildroot-linux-gnu/sysroot/usr/include  conftest.c >&5
<command-line>:0:0: warning: "_FILE_OFFSET_BITS" redefined
<command-line>:0:0: note: this is the location of the previous definition
<command-line>:0:23: error: division by zero in #if

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
(cherry picked from commit 0374b55942e533a3c3997439481a8d05d6c8f729)
This commit is contained in:
Fabrice Fontaine 2019-06-08 23:44:37 +02:00 committed by Azat Khuzhin
parent 7fd7c5eff3
commit d4056e5995
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GPG Key ID: B86086848EF8686D
1 changed files with 1 additions and 1 deletions
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m4/libevent_openssl.m4
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@ -40,7 +40,7 @@ case "$enable_openssl" in
;;
esac
CPPFLAGS_SAVE=$CPPFLAGS
CPPFLAGS+=$OPENSSL_INCS
CPPFLAGS="$CPPFLAGS $OPENSSL_INCS"
AC_CHECK_HEADERS([openssl/ssl.h], [], [have_openssl=no])
CPPFLAGS=$CPPFLAGS_SAVE
AC_SUBST(OPENSSL_INCS)