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configure.ac: don't rely on bashisms

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93fb037d84 introduced unportable shell
syntax, which led to erros like
./configure: 3179: ./configure: CFLAGS+= -D__STDC_WANT_LIB_EXT1__=1: not found
in case a posix shell is used.

Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
This commit is contained in:
Christian Hermann
2019-08-01 13:42:10 +02:00
committed by Christian Heimes
parent e539a29d77
commit 6bef8678f6
1 changed files with 4 additions and 4 deletions
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8
configure.ac
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@@ -19,13 +19,13 @@ AM_INIT_AUTOMAKE([foreign 1.9 tar-pax])
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES])
dnl enable C11 extensions for features like memset_s()
CFLAGS+=" -D__STDC_WANT_LIB_EXT1__=1"
CFLAGS="$CFLAGS -D__STDC_WANT_LIB_EXT1__=1"
dnl enable features like htole16()
CFLAGS+=" -D_DEFAULT_SOURCE=1"
CFLAGS="$CFLAGS -D_DEFAULT_SOURCE=1"
dnl Enable features like strndup()
CFLAGS+=" -D_POSIX_C_SOURCE=200809L"
CFLAGS="$CFLAGS -D_POSIX_C_SOURCE=200809L"
dnl fail hard when includes statements are missing
CFLAGS+=" -Werror=implicit-function-declaration"
CFLAGS="$CFLAGS -Werror=implicit-function-declaration"
AC_PROG_CC_C99
AC_DISABLE_STATIC