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configure: fix basic syntax errors in the shell script programming language

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There is no such thing as `+=` unless you happen to be using the Bash
programming language, i.e. your script shebang is /bin/bash.

However, configure scripts are run via /bin/sh instead, which may or may
not be be bash, usually depending on whether the system in question
preferred to have one less package installed (in which case it is bash)
vs. have a faster /bin/sh installed (in which case it is probably the
dash shell).
This commit is contained in:
Eli Schwartz 2024-01-24 15:06:45 -05:00 committed by Luca Boccassi
parent 959a133520
commit 3b264019a2
1 changed files with 8 additions and 8 deletions
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16
configure.ac
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@ -66,7 +66,7 @@ ZMQ_ORIG_CXXFLAGS="${CXXFLAGS:-none}"
# Checks for programs.
AC_PROG_CC
AX_CHECK_COMPILE_FLAG([-std=c11], [CFLAGS+=" -std=c11 -D_DEFAULT_SOURCE"], [AC_PROG_CC_C99])
AX_CHECK_COMPILE_FLAG([-std=c11], [CFLAGS="${CFLAGS} -std=c11 -D_DEFAULT_SOURCE"], [AC_PROG_CC_C99])
AC_PROG_CXX
AX_CODE_COVERAGE
AM_PROG_CC_C_O
@ -87,8 +87,8 @@ AC_ARG_ENABLE([force-CXX98-compat],
[AS_HELP_STRING([--enable-force-CXX98-compat], [force C++98 build [default=disabled]])])
if test "x$enable_force_CXX98_compat" = "xyes"; then
AC_LANG_PUSH([C++])
AX_CHECK_COMPILE_FLAG([-std=gnu++98], [CXXFLAGS+=" -std=gnu++98"], [])
AX_CHECK_COMPILE_FLAG([-Wc++98-compat -Wc++98-compat-pedantic], [CXXFLAGS+=" -Wc++98-compat"], [])
AX_CHECK_COMPILE_FLAG([-std=gnu++98], [CXXFLAGS="${CXXFLAGS} -std=gnu++98"], [])
AX_CHECK_COMPILE_FLAG([-Wc++98-compat -Wc++98-compat-pedantic], [CXXFLAGS="${CXXFLAGS} -Wc++98-compat"], [])
AC_LANG_POP([C++])
else
AX_CXX_COMPILE_STDCXX_11([ext], [optional])
@ -799,7 +799,7 @@ AM_CONDITIONAL(ON_GNU, test "x$libzmq_on_gnu" = "xyes")
# Check for __atomic_Xxx compiler intrinsics
AC_LANG_PUSH([C++])
AX_CHECK_COMPILE_FLAG([-Watomic-alignment],
[CXXFLAGS+=" -Wno-atomic-alignment"],
[CXXFLAGS="${CXXFLAGS} -Wno-atomic-alignment"],
[],
[-Werror])
LIBZMQ_CHECK_ATOMIC_INTRINSICS([
@ -1137,12 +1137,12 @@ AM_CONDITIONAL(FUZZING_ENGINE_LIB, test "x$FUZZING_ENGINE_LIB" != "x")
# clang 6 has a warning that does not make sense on multi-platform code
AC_LANG_PUSH([C])
AX_CHECK_COMPILE_FLAG([-Wtautological-constant-compare],
[CFLAGS+=" -Wno-tautological-constant-compare"],
[CFLAGS="${CFLAGS} -Wno-tautological-constant-compare"],
[],
[-Werror])
AC_LANG_POP([C])
AX_CHECK_COMPILE_FLAG([-Wtautological-constant-compare],
[CXXFLAGS+=" -Wno-tautological-constant-compare"],
[CXXFLAGS="${CXXFLAGS} -Wno-tautological-constant-compare"],
[],
[-Werror])
@ -1151,12 +1151,12 @@ AX_CHECK_COMPILE_FLAG([-Wtautological-constant-compare],
# E: lto-no-text-in-archive
AC_LANG_PUSH([C])
AX_CHECK_COMPILE_FLAG([-ffat-lto-objects],
[CFLAGS+=" -ffat-lto-objects"],
[CFLAGS="${CFLAGS} -ffat-lto-objects"],
[],
[-Werror])
AC_LANG_POP([C])
AX_CHECK_COMPILE_FLAG([-ffat-lto-objects],
[CXXFLAGS+=" -ffat-lto-objects"],
[CXXFLAGS="${CXXFLAGS} -ffat-lto-objects"],
[],
[-Werror])