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build: Compile secp256k1 with C99 

The secp256k1 library is intended to be C89-compatible. Targeting both
C89 and MinGW with Clang triggers this bug that is fixed in MinGW 8.0.0:
    bedff472af

Rather than requiring MinGW 8, we compile secp256k1 targeting C99.
This commit is contained in:
Jack Grigg 2020-10-13 17:17:26 +01:00
parent ab4033c49c
commit e917cb614f
1 changed files with 4 additions and 4 deletions
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8
src/secp256k1/configure.ac
View File

@ -25,9 +25,9 @@ fi
AM_PROG_CC_C_O
AC_PROG_CC_C89
if test x"$ac_cv_prog_cc_c89" = x"no"; then
AC_MSG_ERROR([c89 compiler support required])
AC_PROG_CC_C99
if test x"$ac_cv_prog_cc_c99" = x"no"; then
AC_MSG_ERROR([c99 compiler support required])
fi
AM_PROG_AS
@ -65,7 +65,7 @@ esac
CFLAGS="$CFLAGS -W"
warn_CFLAGS="-std=c89 -pedantic -Wall -Wextra -Wcast-align -Wnested-externs -Wshadow -Wstrict-prototypes -Wno-unused-function -Wno-long-long -Wno-overlength-strings"
warn_CFLAGS="-std=c99 -pedantic -Wall -Wextra -Wcast-align -Wnested-externs -Wshadow -Wstrict-prototypes -Wno-unused-function -Wno-long-long -Wno-overlength-strings"
saved_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $warn_CFLAGS"
AC_MSG_CHECKING([if ${CC} supports ${warn_CFLAGS}])